tag:blogger.com,1999:blog-5130946673268164552024-03-14T06:01:13.649+00:00M1KTA's QRP ham radio blogOther than a trip which might get the odd mention I will detail projects I am working on, what I want to be working on and what I have otherwise to report on.
I will update the individual projects as they advance.
As asked I have started to catalogue the references I have follow the link on the left where you can obtain them too. Want to email me wander over to qrz.com and you'll find my email address there. Also twitter @m1kta_qrpUnknownnoreply@blogger.comBlogger1010125tag:blogger.com,1999:blog-513094667326816455.post-81769272690913772362023-01-04T11:58:00.004+00:002023-01-04T12:08:30.031+00:00Analogue Display Digital VFO<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhfYC6QBDywhiml6YffuSDJcVNce0MAmaZB5Sz049e2LZUi94uR63xostHkziznul9CUt1YCLOsKEhqmqJWJqdAMxa8sYKRnlSkgRcdpZEx-K6c2VDtRznX3qlb4gv0GAhrESkiDrY2ORc59qWJYnqKw6mb76ntdjb77npARGv3DGWjUexnvtyHpipN/s4160/IMG_20230104_115620.jpg" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="3120" data-original-width="4160" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhfYC6QBDywhiml6YffuSDJcVNce0MAmaZB5Sz049e2LZUi94uR63xostHkziznul9CUt1YCLOsKEhqmqJWJqdAMxa8sYKRnlSkgRcdpZEx-K6c2VDtRznX3qlb4gv0GAhrESkiDrY2ORc59qWJYnqKw6mb76ntdjb77npARGv3DGWjUexnvtyHpipN/s320/IMG_20230104_115620.jpg" width="320" /></a></div><br /><p><br /></p><p>Following the original by JF3HZB (PW October 2022 p56) I have bodged mine sort of based on the original</p><p><a href="https://github.com/tjlab-jf3hzb/Digital_VFO_with_analog_dial">https://github.com/tjlab-jf3hzb/Digital_VFO_with_analog_dial</a></p><p><a href="https://tj-lab.org/2019/02/17/vfo5/">https://tj-lab.org/2019/02/17/vfo5/</a></p><p>I will use for bench signal source and an older direct conversion radio setup I have.</p><p>The ESP32 I used seems to be a bit different.</p><p>The upload speed 115200, 240MHz, 40Mh flash, 4MB flash</p><p>Anyway programmed it.</p><p></p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/a/AVvXsEh0K59wZrSjptgOJLIIRxZcUGv6xj55KykDq60W-ItIxKmop86NR9LMePtMor6psIoxJi--uwIcaKVwqCGBg9khsSfH5vwlfoiJxnuPXQQto5E5YTrzsD0wKDIU8ifHxYeIY5Gpyj_S8jCwppQKmft7Vbc0MfnjR6E1wYyB3V_2xHf1GPA1umjVH8Qw" style="margin-left: 1em; margin-right: 1em;"><img alt="" data-original-height="1310" data-original-width="1846" height="227" src="https://blogger.googleusercontent.com/img/a/AVvXsEh0K59wZrSjptgOJLIIRxZcUGv6xj55KykDq60W-ItIxKmop86NR9LMePtMor6psIoxJi--uwIcaKVwqCGBg9khsSfH5vwlfoiJxnuPXQQto5E5YTrzsD0wKDIU8ifHxYeIY5Gpyj_S8jCwppQKmft7Vbc0MfnjR6E1wYyB3V_2xHf1GPA1umjVH8Qw" width="320" /></a></div><br />I used a 2" rotary controller as per the PW article. Ruler and JLCPCB squeaky duck for size comparison.<p></p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh1wFkkabEKkDc_sSidnwtaGxP1PuEJpJMHLxclJ0QWxs4AVubMm9FcVcwh5IxF2MnOs4QmXOUgw0LCm3P930edu_cY4McFNLgxBYam0wd8-BFZwpCyh1mlcAPEuuAd3x55recjad_OsiXSwPqeEK4gjhLsBG5n_Yy-2W7iMvJiT-iZSZQLniZGU5n7/s4160/IMG_20230104_120120.jpg" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="4160" data-original-width="3120" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh1wFkkabEKkDc_sSidnwtaGxP1PuEJpJMHLxclJ0QWxs4AVubMm9FcVcwh5IxF2MnOs4QmXOUgw0LCm3P930edu_cY4McFNLgxBYam0wd8-BFZwpCyh1mlcAPEuuAd3x55recjad_OsiXSwPqeEK4gjhLsBG5n_Yy-2W7iMvJiT-iZSZQLniZGU5n7/s320/IMG_20230104_120120.jpg" width="240" /></a></div><br /><div><br /></div>Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-513094667326816455.post-4088868787401009922022-06-08T10:23:00.012+01:002022-06-08T16:30:14.887+01:00TE-2101 antenna analyzer<p> This is tiny.</p><br /><p></p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgOOYDoAjr6yPLjIDlqsvZ6IZSxLXuVzXG3qTgtFmDJVqo3joBTUfZG0PQqpxneo8a43zB4YwOYmX0-fFD1yjsDl2ymBTIC7mmM7QADoFJtATolAXHrlAmq8jHyB4dn0OVdf6I_QJeKYSsnslBO4nIAe9rneHgamRiyXMZdQW0WaABNJEjTIXKgNnY4/s1200/FUtyRRdXoAEiWaR.jpeg" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1200" data-original-width="900" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgOOYDoAjr6yPLjIDlqsvZ6IZSxLXuVzXG3qTgtFmDJVqo3joBTUfZG0PQqpxneo8a43zB4YwOYmX0-fFD1yjsDl2ymBTIC7mmM7QADoFJtATolAXHrlAmq8jHyB4dn0OVdf6I_QJeKYSsnslBO4nIAe9rneHgamRiyXMZdQW0WaABNJEjTIXKgNnY4/s320/FUtyRRdXoAEiWaR.jpeg" width="240" /></a></div><br /><p></p><p>Amazing bit of homebrew.</p><p><br /></p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi15VGYh7eCtJy2dIylWv77Dsv14rWQnjP-wyyAo4O4yQNE4xvudZ8ghS9K47h7hexbaWAJWJDTRcsYOEYtCq_1DGOP51vfkbSzKIkJJObSOktK6uGjuZhy-2V9QU9vnOnizZ6FEAn4BxYVbbpt9S84LPUd10-0vkjv-36ExSgRPS-RIObTl35o5VXO/s2048/FUtujg3WQAA7vYG.jpeg" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1536" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi15VGYh7eCtJy2dIylWv77Dsv14rWQnjP-wyyAo4O4yQNE4xvudZ8ghS9K47h7hexbaWAJWJDTRcsYOEYtCq_1DGOP51vfkbSzKIkJJObSOktK6uGjuZhy-2V9QU9vnOnizZ6FEAn4BxYVbbpt9S84LPUd10-0vkjv-36ExSgRPS-RIObTl35o5VXO/s320/FUtujg3WQAA7vYG.jpeg" width="240" /></a></div><p></p><p>The manual is in Japanese but the block diagram explains how it works</p><p><br /></p><p></p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEifSRpYRnRNOBA7G8od4dG6dOCSXvc8ejLrKpCq0u678-06H7MHqUaF5Jyx8zW6UPSaMVwYKBFUtyg4KYELWpXZn45Yssqepo30WLZHeV5nQQj6-o6DjxAjee5__A9sE1H3zhEsmdibaJwkVh855lzNOOyoFlT0V1cZxUvTssPDOAkKeZOoubpcGQM9/s4186/Screenshot%202022-06-08%20at%2009.15.08.png" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2098" data-original-width="4186" height="160" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEifSRpYRnRNOBA7G8od4dG6dOCSXvc8ejLrKpCq0u678-06H7MHqUaF5Jyx8zW6UPSaMVwYKBFUtyg4KYELWpXZn45Yssqepo30WLZHeV5nQQj6-o6DjxAjee5__A9sE1H3zhEsmdibaJwkVh855lzNOOyoFlT0V1cZxUvTssPDOAkKeZOoubpcGQM9/s320/Screenshot%202022-06-08%20at%2009.15.08.png" width="320" /></a></div><br /> <p></p>nifty bit of engineering with the case (3D printed and bent acrylic sheet). The PCB doubles up as support of the OLED and the uPC and battery charger are on separate PCB underneath. The components are gnat shite size though! This is some nice homebrew.<br /><br /><br />Looks like they are building some more...<br /><div><span face="TwitterChirp, -apple-system, "system-ui", "Segoe UI", Roboto, Helvetica, Arial, sans-serif" style="background-color: white; color: #0f1419; font-size: 23px; white-space: pre-wrap;"><br /></span></div><div style="text-align: center;"><a href="#"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEivWsAvUhU62L3vGpVTOqWqCk3IUq0vlgB7FCiETBrDATIQ045Do3zdcVwNGEemEb-OhwxtJ35dFMn6Qm_Di_uCI57sZI2fY8ulTZ2PXAU4qtDzCrIEbZKGt7c8kemAeWSM9KBqew9eOgqWQJK6AgS5VTpt1cNntUfXjagxGOLg9vlrUGogDvYoGe96/s320/FUtuqTjWIAAJAMi.jpeg" /></a></div>Just fitting battery.<br />Mine is 180mAH so lot smaller than original.<div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEigcxzTpT1f011Pmjz6p9gax1njP6uRaYaKhKYmDEqWs4GQ0FoFxR2h-hE3IulRQyIzjE_smqMXjZH1-kf-kzd06MiKO31Hd28Mmui3XfWNfrnMhJcMxo9yHLKsJf8B8IklP9qzVzml_k8_RWveAofu4gAZhnTP6_HDms9NCaFZghsfsdV4tqBOxj1V/s1200/FUvPU6mX0AQunjk.jpeg" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="900" data-original-width="1200" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEigcxzTpT1f011Pmjz6p9gax1njP6uRaYaKhKYmDEqWs4GQ0FoFxR2h-hE3IulRQyIzjE_smqMXjZH1-kf-kzd06MiKO31Hd28Mmui3XfWNfrnMhJcMxo9yHLKsJf8B8IklP9qzVzml_k8_RWveAofu4gAZhnTP6_HDms9NCaFZghsfsdV4tqBOxj1V/s320/FUvPU6mX0AQunjk.jpeg" width="320" /></a></div><br /><div>Small battery fitted</div><div><br /></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh1phEMj4lwEUjcw8atmgt98Mcdw5ycQRYV6bWI6eIi9BC28kB_eCmsMdhR4jj7oplyN62oPBhrxRpVF_vtzUMVVR3kBBhptGCN7QDkP5exw3bhDpg-t6mjrmh3z3B0_Xcs91Lj4LXwCtEo7RJjkX_7-BfGIos3_ANMV3u1GRzwnMQzIww5toyv1Ns8/s1200/FUvSyBeWYAA1VgP.jpeg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1200" data-original-width="900" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh1phEMj4lwEUjcw8atmgt98Mcdw5ycQRYV6bWI6eIi9BC28kB_eCmsMdhR4jj7oplyN62oPBhrxRpVF_vtzUMVVR3kBBhptGCN7QDkP5exw3bhDpg-t6mjrmh3z3B0_Xcs91Lj4LXwCtEo7RJjkX_7-BfGIos3_ANMV3u1GRzwnMQzIww5toyv1Ns8/s320/FUvSyBeWYAA1VgP.jpeg" width="240" /></a></div><br /><div><br /></div><div>working</div><div><br /></div><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjwzcCr5euU--OP8FqR1tyxUx1rIkPfM-LJqg6NYC2nZNkvojSW7_PZAhJJ8PjI8EXO6GA9YcXu9u3ZjzYLtVtHsZRks-KUAf9UCHYbQPCxTMP265O-Vte59ekmJkIEo7tScdH1mE_KvLPQNq6jkGIiCJRJZGsuGX-mUGmq4ShOyolWZUWHwN0_Kfuz/s1200/FUvTby2WUAAIBMC.jpeg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1200" data-original-width="900" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjwzcCr5euU--OP8FqR1tyxUx1rIkPfM-LJqg6NYC2nZNkvojSW7_PZAhJJ8PjI8EXO6GA9YcXu9u3ZjzYLtVtHsZRks-KUAf9UCHYbQPCxTMP265O-Vte59ekmJkIEo7tScdH1mE_KvLPQNq6jkGIiCJRJZGsuGX-mUGmq4ShOyolWZUWHwN0_Kfuz/s320/FUvTby2WUAAIBMC.jpeg" width="240" /></a></div><br /><div><br /></div><div><span style="background-color: white; caret-color: rgb(29, 155, 240); color: #0f1419; font-family: TwitterChirp, -apple-system, "system-ui", "Segoe UI", Roboto, Helvetica, Arial, sans-serif; font-size: 14px; white-space: pre-wrap;">at just 80grams, this will be a good one for /p operations for sure. It doesn't work without the battery inside but it will work (and keep recharging from USB if it is) so I suspect one of those USB power packs might be useful.</span></div>Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-513094667326816455.post-6113635837398152802022-06-07T09:33:00.002+01:002022-06-07T09:43:12.949+01:00Cores for baluns<p class="p1" style="font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px 0px 12px;"><span class="s1" style="font-kerning: none;"> I have this printed out as I refer to it often enough so I reproduced it here (I cannot recall the original source tbh but all the values are in several reference books anyway) I got loads of torroids from GQRP club sales and W8DIZ.</span></p><p class="p1" style="font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px 0px 12px;"><span class="s1" style="font-kerning: none;">The different material works at different frequencies. These are often used in common mode chokes and wide band baluns.</span></p><table cellpadding="0" cellspacing="0" class="t1" style="background-color: white; border-collapse: collapse; border-color: transparent transparent rgb(83, 83, 83); border-style: solid; border-width: 0px 0px 1px; margin: 0px 0px 10px;"><tbody><tr><td class="td1" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 25px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Material</b></span></p></td><td class="td2" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 116px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Common mode choke frequency range (single turn)</b></span></p></td><td class="td3" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 120px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Common mode choke frequency range (multiple turns)</b></span></p></td><td class="td4" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 91px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Impedance transformer</b></span></p></td><td class="td5" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 88px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>1:1 Balun (Choke)</b></span></p></td></tr><tr><td class="td6" style="padding: 5px 10px 5px 5px; width: 25px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">#31</span></p></td><td class="td7" style="padding: 5px 10px 5px 5px; width: 116px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">3,5 - 100 MHz</span></p></td><td class="td8" style="padding: 5px 10px 5px 5px; width: 120px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">1,5 - 50 MHz</span></p></td><td class="td9" style="padding: 5px 10px 5px 5px; width: 91px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">-</span></p></td><td class="td10" style="padding: 5px 10px 5px 5px; width: 88px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">1,5 - 30 MHz</span></p></td></tr><tr><td class="td11" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 25px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">#43</span></p></td><td class="td12" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 116px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">25 - 600 MHz</span></p></td><td class="td13" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 120px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">2 - 60 MHz</span></p></td><td class="td14" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 91px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">2 - 50 MHz</span></p></td><td class="td15" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 88px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">2 - 30 MHz</span></p></td></tr><tr><td class="td16" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 25px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">#52</span></p></td><td class="td17" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 116px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">150 - 1000 MHz</span></p></td><td class="td18" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 120px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">4 - 150 MHz</span></p></td><td class="td19" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 91px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">1 - 60 MHz</span></p></td><td class="td20" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 88px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">1 - 60 MHz</span></p></td></tr><tr><td class="td11" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 25px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">#61</span></p></td><td class="td12" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 116px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">200 - 2000 MHz</span></p></td><td class="td13" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 120px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">5 - 200 MHz</span></p></td><td class="td14" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 91px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">15 - 200 MHz</span></p></td><td class="td15" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 88px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">10 - 100 MHz</span></p></td></tr><tr><td class="td16" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 25px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">#77</span></p></td><td class="td17" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 116px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">200 kHz - 10 MHz</span></p></td><td class="td18" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 120px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">100 kHz - 10 MHz</span></p></td><td class="td19" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 91px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">0,5 - 8 MHz</span></p></td><td class="td20" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 88px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">1 - 8 MHz</span></p></td></tr></tbody></table><p class="p3" style="background-color: white; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px 0px 10px;"><span class="s1" style="font-kerning: none;"><b>31 Material</b></span></p><table cellpadding="0" cellspacing="0" class="t1" style="background-color: white; border-collapse: collapse; border-color: transparent transparent rgb(83, 83, 83); border-style: solid; border-width: 0px 0px 1px; margin: 0px 0px 10px;"><tbody><tr><td class="td21" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Property</b></span></p></td><td class="td22" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Symbol</b></span></p></td><td class="td23" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Value</b></span></p></td><td class="td24" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Unit</b></span></p></td></tr><tr><td class="td25" style="padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Initial Permeability</span></p></td><td class="td26" style="padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">µi</span></p></td><td class="td27" style="padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">1500</span></p></td><td class="td28" style="padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p4" style="color: #535353; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 14px;"><span class="s1" style="font-kerning: none;"></span><br /></p></td></tr><tr><td class="td29" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Flux Density @ Field strength</span></p></td><td class="td30" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">B</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">H</span></p></td><td class="td31" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">3900</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">5</span></p></td><td class="td32" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Gauss</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Oersted</span></p></td></tr><tr><td class="td33" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Residual Flux Density</span></p></td><td class="td34" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Br</span></p></td><td class="td35" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">3200</span></p></td><td class="td36" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Gauss</span></p></td></tr><tr><td class="td29" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Coersive force</span></p></td><td class="td30" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Hc</span></p></td><td class="td31" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">0.28</span></p></td><td class="td32" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Oersted</span></p></td></tr><tr><td class="td37" style="background-color: #f0f0f0; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Loss Factor @ Frequency</span></p></td><td class="td38" style="background-color: #f0f0f0; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Tan </span><span class="s2" style="font-family: Menlo; font-kerning: none; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal;">δ</span><span class="s1" style="font-kerning: none;">/ µi</span></p></td><td class="td39" style="background-color: #f0f0f0; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">20</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">1.0</span></p></td><td class="td40" style="background-color: #f0f0f0; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">10^-6</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">MHz</span></p></td></tr><tr><td class="td29" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Temperature Coefficient of Initial Permeability (20 -70°C)</span></p></td><td class="td30" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p4" style="color: #535353; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 14px;"><span class="s1" style="font-kerning: none;"></span><br /></p></td><td class="td31" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">1.6</span></p></td><td class="td32" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">%/°C</span></p></td></tr><tr><td class="td33" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Curie Temperature</span></p></td><td class="td34" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Tc</span></p></td><td class="td35" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">>130</span></p></td><td class="td36" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">°C</span></p></td></tr><tr><td class="td29" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Resistivity</span></p></td><td class="td30" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p5" style="color: #535353; font-family: Menlo; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">ρ</span></p></td><td class="td31" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">3000</span></p></td><td class="td32" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">ohm-cm</span></p></td></tr></tbody></table><p class="p6" style="font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 14px;"><span class="s1" style="font-kerning: none;"></span><br /></p><p class="p3" style="background-color: white; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px 0px 10px;"><span class="s1" style="font-kerning: none;"><b>31 Material</b></span></p><table cellpadding="0" cellspacing="0" class="t1" style="background-color: white; border-collapse: collapse; border-color: transparent transparent rgb(83, 83, 83); border-style: solid; border-width: 0px 0px 1px; margin: 0px 0px 10px;"><tbody><tr><td class="td21" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Property</b></span></p></td><td class="td22" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Symbol</b></span></p></td><td class="td23" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Value</b></span></p></td><td class="td24" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Unit</b></span></p></td></tr><tr><td class="td25" style="padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Initial Permeability</span></p></td><td class="td26" style="padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">µi</span></p></td><td class="td27" style="padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">1500</span></p></td><td class="td28" style="padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p4" style="color: #535353; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 14px;"><span class="s1" style="font-kerning: none;"></span><br /></p></td></tr><tr><td class="td29" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Flux Density @ Field strength</span></p></td><td class="td30" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">B</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">H</span></p></td><td class="td31" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">3900</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">5</span></p></td><td class="td32" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Gauss</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Oersted</span></p></td></tr><tr><td class="td33" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Residual Flux Density</span></p></td><td class="td34" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Br</span></p></td><td class="td35" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">3200</span></p></td><td class="td36" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Gauss</span></p></td></tr><tr><td class="td29" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Coersive force</span></p></td><td class="td30" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Hc</span></p></td><td class="td31" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">0.28</span></p></td><td class="td32" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Oersted</span></p></td></tr><tr><td class="td37" style="background-color: #f0f0f0; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Loss Factor @ Frequency</span></p></td><td class="td38" style="background-color: #f0f0f0; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Tan </span><span class="s2" style="font-family: Menlo; font-kerning: none; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal;">δ</span><span class="s1" style="font-kerning: none;">/ µi</span></p></td><td class="td39" style="background-color: #f0f0f0; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">20</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">1.0</span></p></td><td class="td40" style="background-color: #f0f0f0; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">10^-6</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">MHz</span></p></td></tr><tr><td class="td29" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Temperature Coefficient of Initial Permeability (20 -70°C)</span></p></td><td class="td30" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p4" style="color: #535353; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 14px;"><span class="s1" style="font-kerning: none;"></span><br /></p></td><td class="td31" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">1.6</span></p></td><td class="td32" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">%/°C</span></p></td></tr><tr><td class="td33" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Curie Temperature</span></p></td><td class="td34" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Tc</span></p></td><td class="td35" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">>130</span></p></td><td class="td36" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">°C</span></p></td></tr><tr><td class="td29" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Resistivity</span></p></td><td class="td30" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p5" style="color: #535353; font-family: Menlo; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">ρ</span></p></td><td class="td31" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">3000</span></p></td><td class="td32" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">ohm-cm</span></p></td></tr></tbody></table><p class="p3" style="background-color: white; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px 0px 10px;"><span class="s1" style="font-kerning: none;"><b>43 Material</b></span></p><table cellpadding="0" cellspacing="0" class="t1" style="background-color: white; border-collapse: collapse; border-color: transparent transparent rgb(83, 83, 83); border-style: solid; border-width: 0px 0px 1px; margin: 0px 0px 10px;"><tbody><tr><td class="td21" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Property</b></span></p></td><td class="td22" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Symbol</b></span></p></td><td class="td23" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Value</b></span></p></td><td class="td24" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Unit</b></span></p></td></tr><tr><td class="td25" style="padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Initial Permeability</span></p></td><td class="td26" style="padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">µi</span></p></td><td class="td27" style="padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">800</span></p></td><td class="td28" style="padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p4" style="color: #535353; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 14px;"><span class="s1" style="font-kerning: none;"></span><br /></p></td></tr><tr><td class="td29" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Flux Density @ Field strength</span></p></td><td class="td30" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">B</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">H</span></p></td><td class="td31" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">2900</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">10</span></p></td><td class="td32" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Gauss</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Oersted</span></p></td></tr><tr><td class="td33" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Residual Flux Density</span></p></td><td class="td34" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Br</span></p></td><td class="td35" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">1300</span></p></td><td class="td36" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Gauss</span></p></td></tr><tr><td class="td29" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Coersive force</span></p></td><td class="td30" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Hc</span></p></td><td class="td31" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">0.45</span></p></td><td class="td32" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Oersted</span></p></td></tr><tr><td class="td37" style="background-color: #f0f0f0; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Loss Factor @ Frequency</span></p></td><td class="td38" style="background-color: #f0f0f0; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Tan </span><span class="s2" style="font-family: Menlo; font-kerning: none; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal;">δ</span><span class="s1" style="font-kerning: none;">/ µi</span></p></td><td class="td39" style="background-color: #f0f0f0; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">250</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">1.0</span></p></td><td class="td40" style="background-color: #f0f0f0; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">10^-6</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">MHz</span></p></td></tr><tr><td class="td29" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Temperature Coefficient of Initial Permeability (20 -70°C)</span></p></td><td class="td30" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p4" style="color: #535353; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 14px;"><span class="s1" style="font-kerning: none;"></span><br /></p></td><td class="td31" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">1.25</span></p></td><td class="td32" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">%/°C</span></p></td></tr><tr><td class="td33" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Curie Temperature</span></p></td><td class="td34" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Tc</span></p></td><td class="td35" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">>130</span></p></td><td class="td36" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">°C</span></p></td></tr><tr><td class="td29" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Resistivity</span></p></td><td class="td30" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p5" style="color: #535353; font-family: Menlo; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">ρ</span></p></td><td class="td31" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">1×10^5</span></p></td><td class="td32" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">ohm-cm</span></p></td></tr></tbody></table><p class="p6" style="font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 14px;"><span class="s1" style="font-kerning: none;"></span><br /></p><p class="p3" style="background-color: white; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px 0px 10px;"><span class="s1" style="font-kerning: none;"><b>52 Material</b></span></p><table cellpadding="0" cellspacing="0" class="t1" style="background-color: white; border-collapse: collapse; border-color: transparent transparent rgb(83, 83, 83); border-style: solid; border-width: 0px 0px 1px; margin: 0px 0px 10px;"><tbody><tr><td class="td21" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Property</b></span></p></td><td class="td22" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Symbol</b></span></p></td><td class="td23" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Value</b></span></p></td><td class="td24" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Unit</b></span></p></td></tr><tr><td class="td25" style="padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Initial Permeability</span></p></td><td class="td26" style="padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">µi</span></p></td><td class="td27" style="padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">250</span></p></td><td class="td28" style="padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p4" style="color: #535353; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 14px;"><span class="s1" style="font-kerning: none;"></span><br /></p></td></tr><tr><td class="td29" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Flux Density @ Field strength</span></p></td><td class="td30" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">B</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">H</span></p></td><td class="td31" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">4200</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">10</span></p></td><td class="td32" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Gauss</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Oersted</span></p></td></tr><tr><td class="td33" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Residual Flux Density</span></p></td><td class="td34" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Br</span></p></td><td class="td35" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">3300</span></p></td><td class="td36" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Gauss</span></p></td></tr><tr><td class="td29" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Coersive force</span></p></td><td class="td30" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Hc</span></p></td><td class="td31" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">0.6</span></p></td><td class="td32" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Oersted</span></p></td></tr><tr><td class="td37" style="background-color: #f0f0f0; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Loss Factor @ Frequency</span></p></td><td class="td38" style="background-color: #f0f0f0; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Tan </span><span class="s2" style="font-family: Menlo; font-kerning: none; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal;">δ</span><span class="s1" style="font-kerning: none;">/ µi</span></p></td><td class="td39" style="background-color: #f0f0f0; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">45</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">1.0</span></p></td><td class="td40" style="background-color: #f0f0f0; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">10^-6</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">MHz</span></p></td></tr><tr><td class="td29" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Temperature Coefficient of Initial Permeability (20 -70°C)</span></p></td><td class="td30" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p4" style="color: #535353; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 14px;"><span class="s1" style="font-kerning: none;"></span><br /></p></td><td class="td31" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">0.75</span></p></td><td class="td32" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">%/°C</span></p></td></tr><tr><td class="td33" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Curie Temperature</span></p></td><td class="td34" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Tc</span></p></td><td class="td35" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">>250</span></p></td><td class="td36" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">°C</span></p></td></tr><tr><td class="td29" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Resistivity</span></p></td><td class="td30" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p5" style="color: #535353; font-family: Menlo; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">ρ</span></p></td><td class="td31" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">1 x 10^9</span></p></td><td class="td32" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">ohm-cm</span></p><p class="p6" style="font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 14px;"><span class="s1" style="font-kerning: none;"></span><br /></p></td></tr></tbody></table><p class="p3" style="background-color: white; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px 0px 10px;"><span class="s1" style="font-kerning: none;"><b>61 Material</b></span></p><table cellpadding="0" cellspacing="0" class="t1" style="background-color: white; border-collapse: collapse; border-color: transparent transparent rgb(83, 83, 83); border-style: solid; border-width: 0px 0px 1px; margin: 0px 0px 10px;"><tbody><tr><td class="td21" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Property</b></span></p></td><td class="td22" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Symbol</b></span></p></td><td class="td23" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Value</b></span></p></td><td class="td24" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Unit</b></span></p></td></tr><tr><td class="td25" style="padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Initial Permeability</span></p></td><td class="td26" style="padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">µi</span></p></td><td class="td27" style="padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">125</span></p></td><td class="td28" style="padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p4" style="color: #535353; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 14px;"><span class="s1" style="font-kerning: none;"></span><br /></p></td></tr><tr><td class="td29" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Flux Density @ Field strength</span></p></td><td class="td30" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">B</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">H</span></p></td><td class="td31" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">2500</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">15</span></p></td><td class="td32" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Gauss</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Oersted</span></p></td></tr><tr><td class="td33" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Residual Flux Density</span></p></td><td class="td34" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Br</span></p></td><td class="td35" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">1000</span></p></td><td class="td36" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Gauss</span></p></td></tr><tr><td class="td29" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Coersive force</span></p></td><td class="td30" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Hc</span></p></td><td class="td31" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">1.1</span></p></td><td class="td32" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Oersted</span></p></td></tr><tr><td class="td37" style="background-color: #f0f0f0; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Loss Factor @ Frequency</span></p></td><td class="td38" style="background-color: #f0f0f0; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Tan </span><span class="s2" style="font-family: Menlo; font-kerning: none; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal;">δ</span><span class="s1" style="font-kerning: none;">/ µi</span></p></td><td class="td39" style="background-color: #f0f0f0; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">30</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">1.0</span></p></td><td class="td40" style="background-color: #f0f0f0; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">10^-6</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">MHz</span></p></td></tr><tr><td class="td29" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Temperature Coefficient of Initial Permeability (20 -70°C)</span></p></td><td class="td30" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p4" style="color: #535353; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 14px;"><span class="s1" style="font-kerning: none;"></span><br /></p></td><td class="td31" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">0.1</span></p></td><td class="td32" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">%/°C</span></p></td></tr><tr><td class="td33" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Curie Temperature</span></p></td><td class="td34" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Tc</span></p></td><td class="td35" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">>300</span></p></td><td class="td36" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">°C</span></p></td></tr><tr><td class="td29" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Resistivity</span></p></td><td class="td30" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p5" style="color: #535353; font-family: Menlo; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">ρ</span></p></td><td class="td31" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">1 x 10^8</span></p></td><td class="td32" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">ohm-cm</span></p></td></tr></tbody></table><p class="p6" style="font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 14px;"><span class="s1" style="font-kerning: none;"></span><br /></p><p class="p3" style="background-color: white; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px 0px 10px;"><span class="s1" style="font-kerning: none;"><b>77 Material</b></span></p><table cellpadding="0" cellspacing="0" class="t1" style="background-color: white; border-collapse: collapse; border-color: transparent transparent rgb(83, 83, 83); border-style: solid; border-width: 0px 0px 1px; margin: 0px 0px 10px;"><tbody><tr><td class="td21" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Property</b></span></p></td><td class="td22" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Symbol</b></span></p></td><td class="td23" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Value</b></span></p></td><td class="td24" style="background-color: #d1e9f5; border-color: rgb(83, 83, 83) transparent rgb(213, 213, 213); border-style: solid; border-width: 1px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="middle"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;"><b>Unit</b></span></p></td></tr><tr><td class="td25" style="padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Initial Permeability</span></p></td><td class="td26" style="padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">µi</span></p></td><td class="td27" style="padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">2000</span></p></td><td class="td28" style="padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p4" style="color: #535353; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 14px;"><span class="s1" style="font-kerning: none;"></span><br /></p></td></tr><tr><td class="td29" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Flux Density @ Field strength</span></p></td><td class="td30" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">B</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">H</span></p></td><td class="td31" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">5100</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">5</span></p></td><td class="td32" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Gauss</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Oersted</span></p></td></tr><tr><td class="td33" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Residual Flux Density</span></p></td><td class="td34" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Br</span></p></td><td class="td35" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">1800</span></p></td><td class="td36" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Gauss</span></p></td></tr><tr><td class="td29" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Coersive force</span></p></td><td class="td30" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Hc</span></p></td><td class="td31" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">0.25</span></p></td><td class="td32" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Oersted</span></p></td></tr><tr><td class="td37" style="background-color: #f0f0f0; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Loss Factor @ Frequency</span></p></td><td class="td38" style="background-color: #f0f0f0; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Tan </span><span class="s2" style="font-family: Menlo; font-kerning: none; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal;">δ</span><span class="s1" style="font-kerning: none;">/ µi</span></p></td><td class="td39" style="background-color: #f0f0f0; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">15</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">0.1</span></p></td><td class="td40" style="background-color: #f0f0f0; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">10^-6</span></p><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">MHz</span></p></td></tr><tr><td class="td29" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Temperature Coefficient of Initial Permeability (20 -70°C)</span></p></td><td class="td30" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p4" style="color: #535353; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 14px;"><span class="s1" style="font-kerning: none;"></span><br /></p></td><td class="td31" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">1.2</span></p></td><td class="td32" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">%/°C</span></p></td></tr><tr><td class="td33" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Curie Temperature</span></p></td><td class="td34" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Tc</span></p></td><td class="td35" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">>200</span></p></td><td class="td36" style="border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">°C</span></p></td></tr><tr><td class="td29" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 222px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">Resistivity</span></p></td><td class="td30" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 51px;" valign="top"><p class="p5" style="color: #535353; font-family: Menlo; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">ρ</span></p></td><td class="td31" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 46px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">100</span></p></td><td class="td32" style="background-color: #f7f7f7; border-color: rgb(213, 213, 213) transparent transparent; border-style: solid; border-width: 1px 0px 0px; padding: 5px 10px 5px 5px; width: 54px;" valign="top"><p class="p2" style="color: #535353; font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-kerning: none;">ohm-cm</span></p></td></tr></tbody></table><p class="p6" style="font-family: Courier; font-size: 12px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 14px;"><span class="s1" style="font-kerning: none;"></span><br /></p>Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-513094667326816455.post-78434446886163306792021-11-18T11:17:00.001+00:002021-11-18T11:17:04.974+00:00QBSA Again...<p><span style="background-color: rgba(0, 0, 0, 0.03); color: #0f1419; font-family: TwitterChirp, -apple-system, system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; font-size: 15px; white-space: pre-wrap;">Postie delivered an old part built project, but a very good one. Feels like an eternity passed looking for a replacement for one I sold in error.</span></p><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-6FgsQz2ZL8g/YZY1tISSf2I/AAAAAAAAObg/-MNI_7I5Zbswt2Yrt4ElAd-U6TXIdcfHQCLcBGAsYHQ/s2048/FEdiHooX0AAkVFD.jpeg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1536" height="320" src="https://1.bp.blogspot.com/-6FgsQz2ZL8g/YZY1tISSf2I/AAAAAAAAObg/-MNI_7I5Zbswt2Yrt4ElAd-U6TXIdcfHQCLcBGAsYHQ/s320/FEdiHooX0AAkVFD.jpeg" width="240" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-Rhf2C8tEiP0/YZY1tONz0yI/AAAAAAAAObc/PLh1AOhtEpU-5Wgt8U5PZJRpZ87rbBMmgCLcBGAsYHQ/s2048/FEdiI6FXEAEXeSw.jpeg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="2048" data-original-width="1536" height="320" src="https://1.bp.blogspot.com/-Rhf2C8tEiP0/YZY1tONz0yI/AAAAAAAAObc/PLh1AOhtEpU-5Wgt8U5PZJRpZ87rbBMmgCLcBGAsYHQ/s320/FEdiI6FXEAEXeSw.jpeg" width="240" /></a></div><br /><p>I was about to loose hope as spoke to Steve KD1JV and he didn't have anything from the original (very old) project left.</p><p>I must backup that AVR processor read the HEX off it (not an attempt to clone etc) before it gets used.</p>Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-513094667326816455.post-32372751654796972402021-10-18T13:51:00.010+01:002021-10-20T09:58:01.576+01:00RASPAD3 and SDR++ on RaspberryPi<p>Going to be trying a few other SDR.</p><p>Raspberian OS and compiled on the RaPi4 (before putting into RASPAD3). <br /></p><p>RX only. SDRPlay (version 1)</p><p>RX and TX. Lime Mini SDR and Adalm Pluto SDR (found it)<br /></p><p>I use an external USB 3.0 powered hub with these.</p><p>I expect will also try the DragonOS for the RaPi as well.</p><p>I have an SDR and an HF upconverter (basically an RTL dongle) so you can sample down to about 50Hz is needed, will try that was well. <br /></p><p>This had already been tested by David Taylor <a href="https://twitter.com/gm8arv">https://twitter.com/gm8arv</a> and the developer <a href="https://twitter.com/cemaxecuter">https://twitter.com/cemaxecuter</a> of Dragon OS using other SDR.</p><p><br /></p><p>update: 20th October 2021</p><p>I added the software for the Lime Mini SDR and the Pluto SDR, going to be taking a copy of the SD card before do anything else.</p><p><br /></p><p>Last night checked both the speaker and audio out connections with a simple music WAV file playing in a loop. Didn't want RF issues.</p><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-JKyWoM5Dfwc/YW_YR-Ek4wI/AAAAAAAAOS8/n7OCI6pJubYYBdN-nrQtGwwX3RtYkavqQCLcBGAsYHQ/s680/FCFMjU3X0AYVOul.jpeg" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="510" data-original-width="680" height="240" src="https://1.bp.blogspot.com/-JKyWoM5Dfwc/YW_YR-Ek4wI/AAAAAAAAOS8/n7OCI6pJubYYBdN-nrQtGwwX3RtYkavqQCLcBGAsYHQ/s320/FCFMjU3X0AYVOul.jpeg" width="320" /></a></div><br /><p>Note: SDR++ used was the source build 1.0.4 obtained from <a href="https://github.com/AlexandreRouma/SDRPlusPlus/releases ">https://github.com/AlexandreRouma/SDRPlusPlus/releases </a>and compiled on the RaPi (see this blog post for details)<a href=" https://m1kta-qrp.blogspot.com/2021/10/installing-gqrx-and-sdr-on-raspberrypi.html"> https://m1kta-qrp.blogspot.com/2021/10/installing-gqrx-and-sdr-on-raspberrypi.html</a><br /></p><p>What it could do when was version V1.0.0 this is what <span class="p-name vcard-fullname d-block overflow-hidden" itemprop="name">AlexandreRouma at the time:<br /></span></p><div class="_2FCtq-QzlfuN-SwVMUZMM3 _2v9pwVh0VUYrmhoMv1tHPm t3_ovv7oa"><div class="y8HYJ-y_lTUHkQIc1mdCq _2INHSNB8V5eaWp4P0rY_mE"><div class="_2SdHzo12ISmrC8H86TgSCp _29WrubtjAcKqzJSPdQqQ4h" style="--posttitletextcolor: #1A1A1B;"><h1 class="_eYtD2XCVieq6emjKBH3m">SDR++ v1.0.0 Released!</h1></div></div><div class="_1hLrLjnE1G_RBCNcN9MVQf">
<img alt="" src="https://www.redditstatic.com/desktop2x/img/renderTimingPixel.png" style="height: 1px; width: 1px;" />
</div></div><p class="_1qeIAgB0cPwnLhDF9XSiJM">Hi everyone :)</p><p class="_1qeIAgB0cPwnLhDF9XSiJM">After over a year of work, I'm proud to released version 1.0.0 of SDR++!</p><p class="_1qeIAgB0cPwnLhDF9XSiJM">For those who don't know, SDR++ is a crossplatform (Windows, Linux, MacOS, BSD) and open-source (<a class="_3t5uN8xUmg0TOwRCOGQEcU" href="https://github.com/AlexandreRouma/SDRPlusPlus/releases" rel="noopener nofollow ugc" target="_blank">https://github.com/AlexandreRouma/SDRPlusPlus/releases</a>)
general purpose receiver software meant to be simple and easy to use.
It has advances features like multi-vfo and uses a fully custom DSP
making it very efficient.</p><p class="_1qeIAgB0cPwnLhDF9XSiJM">Here are the following additions compared to the <a class="_3t5uN8xUmg0TOwRCOGQEcU" href="https://www.reddit.com/r/RTLSDR/comments/likdmr/an_update_on_sdr/" rel="noopener nofollow ugc" target="_blank">last version</a>:</p><ul class="_33MEMislY0GAlB78wL1_CR"><li class="_3gqTEjt4x9UIIpWiro7YXz"><p class="_1qeIAgB0cPwnLhDF9XSiJM">Support for the SpyServer protocol</p></li><li class="_3gqTEjt4x9UIIpWiro7YXz"><p class="_1qeIAgB0cPwnLhDF9XSiJM">Support for all SDRplay devices</p></li><li class="_3gqTEjt4x9UIIpWiro7YXz"><p class="_1qeIAgB0cPwnLhDF9XSiJM">Support for all BladeRF devices</p></li><li class="_3gqTEjt4x9UIIpWiro7YXz"><p class="_1qeIAgB0cPwnLhDF9XSiJM">Support for all LimeSDR devices</p></li><li class="_3gqTEjt4x9UIIpWiro7YXz"><p class="_1qeIAgB0cPwnLhDF9XSiJM">Optional IQ correction</p></li><li class="_3gqTEjt4x9UIIpWiro7YXz"><p class="_1qeIAgB0cPwnLhDF9XSiJM">Optional Decimation</p></li><li class="_3gqTEjt4x9UIIpWiro7YXz"><p class="_1qeIAgB0cPwnLhDF9XSiJM">Broadcast FM Stereo</p></li><li class="_3gqTEjt4x9UIIpWiro7YXz"><p class="_1qeIAgB0cPwnLhDF9XSiJM">Frequency manager to create lists of frequency and optionally display them directly on the FFT/Waterfall</p></li><li class="_3gqTEjt4x9UIIpWiro7YXz"><p class="_1qeIAgB0cPwnLhDF9XSiJM">Network sink to stream the audio output via TCP or UDP</p></li><li class="_3gqTEjt4x9UIIpWiro7YXz"><p class="_1qeIAgB0cPwnLhDF9XSiJM">Options to set the FFT framerate, FFT size and FFT window.</p></li><li class="_3gqTEjt4x9UIIpWiro7YXz"><p class="_1qeIAgB0cPwnLhDF9XSiJM">Theming with Dark and Light themes supplied by default</p></li><li class="_3gqTEjt4x9UIIpWiro7YXz"><p class="_1qeIAgB0cPwnLhDF9XSiJM">RigCTL server module to control SDR++ from, for example, gpredict.</p></li><li class="_3gqTEjt4x9UIIpWiro7YXz"><p class="_1qeIAgB0cPwnLhDF9XSiJM">A bunch of keyboard shortcuts (see wiki on the github page)</p></li><li class="_3gqTEjt4x9UIIpWiro7YXz"><p class="_1qeIAgB0cPwnLhDF9XSiJM">SNR meter</p></li><li class="_3gqTEjt4x9UIIpWiro7YXz"><p class="_1qeIAgB0cPwnLhDF9XSiJM">More info when hovering a VFO</p></li><li class="_3gqTEjt4x9UIIpWiro7YXz"><p class="_1qeIAgB0cPwnLhDF9XSiJM">Colored VFOs to easily identify which is which at a glance</p></li><li class="_3gqTEjt4x9UIIpWiro7YXz"><p class="_1qeIAgB0cPwnLhDF9XSiJM">Meteor M2 demodulator compatible with LRPTOfflineDecoder and Satdump</p></li><li class="_3gqTEjt4x9UIIpWiro7YXz"><p class="_1qeIAgB0cPwnLhDF9XSiJM">Ability to resize VFOs by directly dragging the sides on the FFT and waterfall</p></li><li class="_3gqTEjt4x9UIIpWiro7YXz"><p class="_1qeIAgB0cPwnLhDF9XSiJM">Module manager to easily add or remove any module on the fly without having to restart or edit the config manually</p></li><li class="_3gqTEjt4x9UIIpWiro7YXz"><p class="_1qeIAgB0cPwnLhDF9XSiJM">File dialogs to select directories in the recorder or files in the file source (instead of having to type in the path)</p></li><li class="_3gqTEjt4x9UIIpWiro7YXz"><p class="_1qeIAgB0cPwnLhDF9XSiJM">Ability
to disable modules that support it (Radio and Meteor M2 demodulator)
with one click (to save CPU power or just if they're not needed)</p></li><li class="_3gqTEjt4x9UIIpWiro7YXz"><p class="_1qeIAgB0cPwnLhDF9XSiJM">Lots of performance improvements</p></li><li class="_3gqTEjt4x9UIIpWiro7YXz"><p class="_1qeIAgB0cPwnLhDF9XSiJM">Ludicrous amounts of bugfix :)</p></li></ul><p class="_1qeIAgB0cPwnLhDF9XSiJM">I'd
like to thank the many contributors, patrons and companies (SDRplay,
Airspy, Nuand, LimeMicro) who helped make this project possible!</p><p class="_1qeIAgB0cPwnLhDF9XSiJM">If
you have any issue with the software, please open a github issue or
contact me directly on the SDR++ discord (see readme on github)</p><p class="_1qeIAgB0cPwnLhDF9XSiJM">I hope this software comes in useful to at least some of you ;)</p><p class="_1qeIAgB0cPwnLhDF9XSiJM"><br /><br /></p>Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-513094667326816455.post-69877551901640378982021-10-14T17:34:00.000+01:002021-10-14T17:34:35.731+01:00RASPAD3<p></p><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-O5D4W76Y9BE/YWhbxdbfcEI/AAAAAAAAOO8/sEqjh8aN6mEipIE40fJI3pr39HddwqeMQCLcBGAsYHQ/s2048/FBrFr0cXEAYSD5Y.jpeg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" height="240" src="https://1.bp.blogspot.com/-O5D4W76Y9BE/YWhbxdbfcEI/AAAAAAAAOO8/sEqjh8aN6mEipIE40fJI3pr39HddwqeMQCLcBGAsYHQ/s320/FBrFr0cXEAYSD5Y.jpeg" width="320" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-mZmmPMHUhxA/YWhbxdqIs9I/AAAAAAAAOPA/uNQKoFd5AlwbDI4qRz1QtqwAakyzNeQ6ACLcBGAsYHQ/s2048/FBrFs5QXsAIiOpr.jpeg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" height="240" src="https://1.bp.blogspot.com/-mZmmPMHUhxA/YWhbxdqIs9I/AAAAAAAAOPA/uNQKoFd5AlwbDI4qRz1QtqwAakyzNeQ6ACLcBGAsYHQ/s320/FBrFs5QXsAIiOpr.jpeg" width="320" /></a></div><br /> <p></p><p> Will turn this into SDR thing tomorrow. </p><p>I compiled the SDR++ and GQRX for the RaPi4 yesterday.<br /></p><p><br /></p>Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-513094667326816455.post-11747398130513564042021-10-13T14:02:00.002+01:002021-10-14T08:48:50.857+01:00 Installing GQRX and SDR++ on RaspberryPi<p> Installing GQRX and SDR++ on RaspberryPi<br /><br />These are all the steps I actually performed.<br /><br />sudo apt update<br />apt list --upgradable<br />sudo apt install gqrx-sdr<br />rtl_test -t<br />gqrx<br /><br />So GQRX sort of worked...<br /><br />So SDR++<br /><br />Grab the source<br />git clone https://github.com/AlexandreRouma/SDRPlusPlus.git<br />ls<br />cd SDRPlusPlus<br />mkdir build<br />cd build/<br />cmake ..<br /><br />so erroring as missing these packages....fftw3 glfw glew libvolk<br /><br />so to install them...<br />sudo apt-get install freeglut3<br />sudo apt-get install freeglut3-dev<br />cmake ..<br />sudo apt install libglew-dev<br />cmake ..<br />sudo apt install glfw3<br />sudo apt install libglfw3-dev<br />cmake ..<br />sudo apt install libairspy-dev<br />cmake ..<br />sudo apt install libairspyhf-dev<br />cmake ..<br />sudo apt install libhackrf-dev<br />cmake ..<br />sudo apt install libsoapysdr-dev<br />cmake ..<br /><br />libiio missing....so get that compile and install<br /><br />cd<br />git clone https://github.com/analogdevicesinc/libiio.git<br />cd libiio/<br />cmake ./<br />See what errors are (there were some)<br />cat /home/pi/libiio/CMakeFiles/CMakeOutput.log<br /><br />install more prerequisites some were already there so it ignores them (from an SDR pluto install doc)<br />sudo apt-get install libxml2 libxml2-dev bison flex libcdk5-dev cmake<br />sudo apt-get install libaio-dev libusb-1.0-0-dev libserialport-dev libxml2-dev libavahi-client-dev doxygen graphviz<br /><br />Try the libiio build again<br />cmake ./<br />make all<br />sudo make install<br />Add the path bit<br />PATH=/usr/lib/:$PATH<br />check it is working iio_info<br /><br />go back to SDR _++ again<br />cd ..<br />cd SDRPlusPlus/<br />cd build/<br />cmake ..<br /><br />so more missing get and install them<br /><br />cd<br />git clone https://github.com/analogdevicesinc/libad9361-iio.git<br />cd libad9361-iio<br />cmake ./<br />make<br />sudo make install<br />cd ~/SDRPlusPlus/build/<br />cmake ..<br /><br />still more missing<br /><br />wget http://www.music.mcgill.ca/~gary/rtaudio/release/rtaudio-5.1.0.tar.gz<br />mv rtaudio-5.1.0.tar.gz ~/Downloads/<br />cd<br />cd Downloads/<br />tar -zxvf rtaudio-5.1.0.tar.gz<br />cd rtaudio-5.1.0/<br />mkdir build && cd build<br />cmake ../<br />make<br />sudo make install<br /><br />Back to SDR++<br />cd<br />cd SDRPlusPlus/build/<br />cmake ..<br />this time no errors<br />used N=4 as 4 cpu make -j 4<br />It maxed out the CPU for a few mins<br />sudo make install<br /><br />That's it SDR++ and GQRX both installed</p><p> </p><p>Yes I am sure much of the missing bits were listed in the prerequisties docs of both but we all read those don't we :-) Of course I had added the development environment to it as well. Mine has 128GB SD card (high endurance) and has a 3TB SSD attached which takes and stores backups, snapshots etc I use an adaptor as well so I don't have to insert the MiniSD card into the Pi.<br /></p>Unknownnoreply@blogger.com3tag:blogger.com,1999:blog-513094667326816455.post-16919773185299899512021-10-09T09:27:00.016+01:002021-10-09T11:08:29.614+01:00Panic.... "Cannot open access to console, the root account is locked." <p>Last weekend I built myself a nice Pi 4 system for the shack. Everything worked perfectly, but today as I rebooted the Pi would simply not boot up. Usually I run almost all my Pis in a headless configuration but as this is the desktop for the operating position I had monitors connected.<br /> Eek, there is was, there it was, The Pi would get stuck at boot with the following error message<br /><br />"Cannot open access to console, the root account is locked." <br />The error message while not too descriptive, it asked me use sulogin and run journalctl -xb however there was no shell to run or list anything.<br /><br />I thought oh no there goes the system will have to rebuild it. However, I thought I would investigate some more.<br /><br />After some google work, I found the following workaround that worked for me. Note for those that try to do this themselves: You will need access to a display,keyboard and a laptop/desktop to do the following steps<br /><br />Retrive your SD card from the Pi and using a adapter mount the card to your PC,Mac or Linux. I use a rocketek that takes either normal or small SD cards .You should be able to see the /boot partition of your SD card.<br />Locate the file fstab in the rootfs partition and edit out the usb drive I added in last time and left in place! You might need to sudo to root to write this file or the next one see later if that is the case....<br />Or find the bootfs and look for the cmdline.txt file and add the following at the end of the line init=/bin/sh Note: Do not create a new line, just add the above to end of the current line. This will make the system give you a prompt so you might be able to figure out what the problem is. A bit like one of the earlier linux installs.<br />Load the SD card back into the pi and boot up.<br />if you did the cmdline.txt change you should now get the a root shell prompt and I expect you will know how to fix it from there. You could undo the changes to /etc/fstab or whatever else that might have caused an issue.<br />I found I could not make and save the changes to the files as the system will complain the SD card is read only file system. If you get that move to the next sections.<br /><br />A raspberry pi SD card will has two main partitions, since we cannot read the partition table directly you must manually locate the device for your root and boot partitions. You can do this by going to the /dev directory and you should see something similar to mmcblk0p1 & mmcblk0p2. You could use ls -l to check.<br /><br />Mine is:<br /><br />brw-rw---- 1 root disk 179, 0 Oct 8 18:28 mmcblk0<br /><br />brw-rw---- 1 root disk 179, 1 Oct 8 18:28 mmcblk0p1<br /><br />brw-rw---- 1 root disk 179, 2 Oct 8 18:28 mmcblk0p2<br /><br />The second device mmcblk0p2 will be your root partition. You need to remount this with read write permissions<br /><br />mount -o remount,rw /dev/mmcblk0p2 /<br />Once this is remounted, go ahead and edit your /etc/fstab and save it.<br /><br />The offending line in mine was:<br /><br />#/dev/sda1 /disk1 auto defaults 1 1<br /><br />Before you exit, make sure you revert the change to the cmdline.txt in the /boot partition. You may need to mount that in read write mode as you did above for the /root partition before you can change it.<br /><br />mount -o remount,rw /dev/mmcblk0p1 /boot<br /><br />Alternatively you can revert back the change to cmdline.txt on your laptop as I did using the USB adapter.<br /><br />If everything goes well, you should be able to boot back your Pi in a normal way.<br /><br />Panic over<br /></p>Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-513094667326816455.post-86993120685515157662021-08-03T15:57:00.002+01:002021-08-03T15:57:21.028+01:00What to build with STM32F746G-Disco and SI5351 Board <p>I had these in the workshop and as not operating right now, thought what could I make with these and a few other RFy things from the 'junk box'.</p><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-ivVLpVq806c/YQlXZNkCiII/AAAAAAAANsY/9x35b9Qx8pMI3r9tLuXEqpqlBdK_SdCNACLcBGAsYHQ/s444/stm32f746_discovery.jpg.d415f953abf19e57ae860a12c4b5c378.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="260" data-original-width="444" height="187" src="https://1.bp.blogspot.com/-ivVLpVq806c/YQlXZNkCiII/AAAAAAAANsY/9x35b9Qx8pMI3r9tLuXEqpqlBdK_SdCNACLcBGAsYHQ/s320/stm32f746_discovery.jpg.d415f953abf19e57ae860a12c4b5c378.jpg" width="320" /></a></div><br /><p><br /></p><p>Well I know have some SA612 and SMD op amps and lots of SMD discretes so thought might try the EU1KY analyser, after looking at JA versions (but seemed to miss out on the kitting as was sorting Mum's stuff out for Dad).</p><p>The STM32F746G-DISCO board in a blister pack, with a H7 version too, has been in the junkbox for a bit.</p><p>I bought a couple of the Front end RF PCB a while back for the EU1KY.</p><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-JxwKLTZKRyk/YQlXZBDQncI/AAAAAAAANsU/LDFUGVS4QyMarWcTXn-oHWkcb40PQzmXgCLcBGAsYHQ/s225/s-l225.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="192" data-original-width="225" height="192" src="https://1.bp.blogspot.com/-JxwKLTZKRyk/YQlXZBDQncI/AAAAAAAANsU/LDFUGVS4QyMarWcTXn-oHWkcb40PQzmXgCLcBGAsYHQ/s0/s-l225.jpg" width="225" /></a></div><p></p><p>I have a few SI5351 modules with 25MHz crystal so might see about just removing the chip from one and adding it to the PCB and reusing some of the SMA connectors and other components.</p><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-vh0TaHJoW-A/YQlYiWBqsFI/AAAAAAAANso/jEmoz5miMjQ-sHscxPaPjrNgruMJJWNEgCLcBGAsYHQ/s864/61-7LnwhG9L._AC_SL1001_.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="864" data-original-width="720" height="320" src="https://1.bp.blogspot.com/-vh0TaHJoW-A/YQlYiWBqsFI/AAAAAAAANso/jEmoz5miMjQ-sHscxPaPjrNgruMJJWNEgCLcBGAsYHQ/s320/61-7LnwhG9L._AC_SL1001_.jpg" width="267" /></a></div><br /><p><br /></p><p><br /></p>Unknownnoreply@blogger.com1tag:blogger.com,1999:blog-513094667326816455.post-74077557954106335482021-07-12T08:30:00.003+01:002021-07-12T08:34:20.079+01:00Shellinabox on RaspberryPi<p>It is definitely not new, and I claim no originality as this idea has been posted elsewhere before, but I mentioned in discussion that I was using this (along with octoprint) on my Raspberry Pi 'servers' used with the 3D printers and CNC between Cambridge and Cornwall, 400 miles (and when really remote on some DX trip, usually to tweak some SDR setting) to adjust stuff if needed. Sounded really useful so I was asked could I provide some details:</p><p>So here goes (your mileage may vary so don't assume a pure cut and paste will work for you). There are plenty of albeit old guides out there that will help you set this up on full blown PC's.</p><p>First to make this super easy on myself I used the Debian "Buster" Raspberry Pi image. It should work with others but you might need to do some tweaking.</p><p><b>Shellinabox</b> is self contained and it does everything out of the box (no pun intended) over a single TCP port 4200 by default. You can change this and in fact you might want to if you are using it to access the server from outside the network.</p><p>The first thing is to install it...</p><p>As I mentioned I am using raspbian so this is super easy...</p><p>(assuming logged in as 'pi', I use apt myself but apt-get works)</p><p>sudo apt-get install shellinabox</p><p>That is it... simple hey. That gives you the default install. (The install started the service on mine too but /etc/init.d/shellinabox starts it! You might be able to use systemd systemctl etc... but I not tried)</p><p>You use it by using a web browser on a remote system and into the navigation window typing in the IP/or hostname if you have done some fancy networking of the the Raspberry Pi and then :4200 e.g. https://192.168.0.100:4200</p><p>You will get a plain white screen and a prompt to login will appear. Continue as you would normally. it is a CLI or shell s don't expect some GUI anything to work (it might but I never tried)</p><p>If it doesn't work visit <a href="https://code.google.com/archive/p/shellinabox/">https://code.google.com/archive/p/shellinabox/</a> this was 'abandoned' a few years ago there is a more recent fork at <a href="https://github.com/shellinabox/shellinabox">https://github.com/shellinabox/shellinabox</a> you should find any further answers there including configuring it.</p><p>If you are running one of the paranoid browsers it might moan about an SSL cert, you can add one to remove this warning if wanted. Installing SSL Certs is beyond this post.</p><p>If you are intending to connect to this from outside your network you will need to a do a few things.</p><p>1. Secure the Raspberry Pi server (make sure everything is up to date, make sure the users are using decent passwords.) I use strong passwords and I added MFA. Google for it.</p><p>2. Secure the Raspberry Pi server (check you really have done it!)</p><p>3. Adjust the config so you are using either a different port to 4200 and make your router forward any requests for that port to it. Care!!! You are exposing YOUR network, don't do it if you don't know what you are doing or don't accept all the risks. There are loads of bored script kiddies out there 24x7x365 just waiting to find any exploit.</p><p>I use XTERM on my Linux desktop so I like it so I added some extra bits.... as didn't like the black on white. I use a black background and green letters which I also made a bit bigger. You can add lots of other bits and pieces the choices are up to you. (I add a login screen, tweaked MOTD, to remind you are connecting to a remote system).</p><p>The configuration is in /etc/shellinabox and /etc/default/shellinabox as CSS style sheets so it isn't too hard to tweak it. /etc/shellinabox/options-enabled is the file it uses, you can eiter edit a file directly or create one and link to it (probably better if you want to tweak it).</p><p>(I'll add some images, screen grabs to this post.)</p><p><br /></p>Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-513094667326816455.post-91607307431066221942021-01-30T18:43:00.003+00:002021-01-30T19:01:05.404+00:00AC unit replacement.<p class="p1" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-variant-ligatures: no-common-ligatures;"><br />Looks like AC has failed in shack so neither cools or heats now.</span></p><p class="p2" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 13px;"><span class="s1" style="font-variant-ligatures: no-common-ligatures;"></span><br /></p><p class="p1" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-variant-ligatures: no-common-ligatures;">Right now operating without any heat in shack is a tad uncomfortable after a while.</span></p><p class="p2" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 13px;"><span class="s1" style="font-variant-ligatures: no-common-ligatures;"></span><br /></p><p class="p1" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-variant-ligatures: no-common-ligatures;">The AC unit is an old eIQ-12WMINV the original gas was replaced with a new refrigerant a while back. Anyway the comms from the inner and outer have failed so time to get a new one. Done that but now it seems that the local AC guys that installed the previous one will not install this one as they didn't supply it, and as not prepared to pay a 150% mark up for the same unit just because they order it so a bit stuck or am I?</span></p><p class="p2" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 13px;"><span class="s1" style="font-variant-ligatures: no-common-ligatures;"></span><br /></p><p class="p2" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 13px;">This is <7KG of R290 so doesn't actually need you to use an AC company. Not sure that is the wisest option but it l<span style="font-variant-ligatures: no-common-ligatures;">ooks like the locals have given me have no option but to commission this myself.</span></p><p class="p2" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 13px;"><span class="s1" style="font-variant-ligatures: no-common-ligatures;"></span><br /></p><p class="p1" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-variant-ligatures: no-common-ligatures;">Why would I even think of doing this?</span></p><p class="p1" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-variant-ligatures: no-common-ligatures;">After recharging my dad's car AC and knowing all the kit still exists and having worked with gas lines, pumps and gauges and CFC's when I did my PhD for years I thought why should I not try and DIY this?</span></p><p class="p2" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 13px;"><span class="s1" style="font-variant-ligatures: no-common-ligatures;"></span><br /></p><p class="p2" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 13px;">I got lots of hints and suggestions from others with similar units and this is what this post is about.</p><p class="p2" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 13px;"><br /></p><p class="p2" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 13px;">I have this kind of manifold gauge.</p><p class="p2" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 13px;"><br /></p><p class="p2" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 13px;"><br /></p><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-2VEBPbrRMwo/YBWpWlzC72I/AAAAAAAANFE/MhxLpb0a8LgNwqhG3nqUpL26qQW1VzgMgCLcBGAsYHQ/s1191/717sFdG75RL._AC_SL1280_.jpg" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1191" data-original-width="1116" height="320" src="https://1.bp.blogspot.com/-2VEBPbrRMwo/YBWpWlzC72I/AAAAAAAANFE/MhxLpb0a8LgNwqhG3nqUpL26qQW1VzgMgCLcBGAsYHQ/s320/717sFdG75RL._AC_SL1280_.jpg" /></a></div><p></p><p class="p2" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 13px;"><br /></p><p class="p1" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-variant-ligatures: no-common-ligatures;">So worked out this much...In summary, inside unit is charged with nitrogen. Outside with refrigerant. So let the nitrogen out, connect the pipes. Then vacuum the whole lot inside and connect the outside.</span></p><p class="p2" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 13px;"><span class="s1" style="font-variant-ligatures: no-common-ligatures;"></span><br /></p><p class="p1" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-variant-ligatures: no-common-ligatures;">These units are all supplied with refrigerant contained in the outdoor unit, so as long as don't open that it stays there.</span></p><p class="p2" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 13px;"><span class="s1" style="font-variant-ligatures: no-common-ligatures;"> </span></p><p class="p1" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-variant-ligatures: no-common-ligatures;">You need to purge the other pipework of all the air. I have a vacuum pump to do this first down to about -30 PSI. Once done and connected up, and tested there are no leaks in the pipework, will do this two ways, one see that the unit holds the vacuum for a while and second to pressurise it with N2 as well and monitor the pressure levels on both occasions, open the outside unit gas line (containing the condenser), with the AC unit turned on and set to cool that will then draw/fill the gas lines with refrigerant and the AC unit will then work as planned.</span></p><p class="p2" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 13px;"><span class="s1" style="font-variant-ligatures: no-common-ligatures;"></span><br /></p><p class="p1" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-variant-ligatures: no-common-ligatures;">I was told that without a pump and specialist A/C kit as this is new it is still possible to connect things up but you can risk losing too much refrigerant. If you do that you will probably need an A/C engineer to refill your unit properly. Think lots of costs.</span></p><p class="p2" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 13px;"><span class="s1" style="font-variant-ligatures: no-common-ligatures;"></span><br /></p><p class="p1" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-variant-ligatures: no-common-ligatures;">However, it is not impossible, definitely not recommended but if no other options and if you are prepared to risk this the steps might be these. With the inner unit set to run cool then once you have tightened up all the joints fully on the gas lines then use a 1 second fill from the liquid valve with refrigerant, that is open the valve, having first got ready with leak spray or soapy water and a brush. You need to test all your joints several times with spray and listen and look for a serious leak. You might need to repeat a few times if you do find a leak but when satisfied with all of the joints you need to work out carefully the path of the refrigerant from the outdoor unit, through the indoor unit and back to the outdoor unit . The end of this is the T shaped valve on the outdoor unit. Take off the plastic cap on the T to reveal the schrader valve. Open the liquid valve for an other 3 seconds (you must hear the system filling up for 3 seconds) Close it and leak test the joints again.</span></p><p class="p1" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-variant-ligatures: no-common-ligatures;">Then with both valves closed, press in the schrader valve to expel air and refrigerant for 5 seconds. You will possibly see some oil deposits and aget a cold blast. The pipework is now full of refrigerant in gaseous form. Now open both valves fully and replace the purge cap. The system should now work.</span></p><p class="p2" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px; min-height: 13px;"><span class="s1" style="font-variant-ligatures: no-common-ligatures;"></span><br /></p><p class="p1" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span class="s1" style="font-variant-ligatures: no-common-ligatures;">However, this is a warning.......not using an Fgas engineer will invalidate the long term warranty of the unit and if it all goes wrong you will have to call one in anyway.....not cheap if they will even look at DIY units with R290 refrigerant (which is basically refined Propane so very flammable!). There is a very very real chance this could all go badly wrong with R290 as this ia a refined version of the same stuff you</span><span class="s1" style="font-variant-ligatures: no-common-ligatures;"><span class="Apple-converted-space"> </span>will find in camping gas and the AC unit has aboiut the same as two of those small cans so the result could be very bad. This is perhaps why the non technically minded, those without any tools should probably no</span><span style="font-variant-ligatures: no-common-ligatures;">t even attempt this and go with an FGas engineer.</span></p><p class="p1" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span style="font-variant-ligatures: no-common-ligatures;"><br /></span></p><p class="p1" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span style="font-variant-ligatures: no-common-ligatures;">Anyway waiting for a period of drier weather and will go through the process.</span></p><p class="p1" style="font-family: Menlo; font-size: 11px; font-stretch: normal; font-variant-east-asian: normal; font-variant-numeric: normal; line-height: normal; margin: 0px;"><span style="font-variant-ligatures: no-common-ligatures;">(and I guess any comments to pick up if I had missed anything)</span></p>Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-513094667326816455.post-66836477549268708542021-01-16T17:27:00.016+00:002021-01-16T18:10:30.460+00:00New 13cm pipe end cap filter<p>Components RG402 semi rigid, piece of FR4, SMA connectors, 3-22mm pip cutter (to score the shield before removal), Brass M3 nut and bolt (should be M4 but don't have to hand).</p><p>Holes are 3mm (initially, filed out to have a tight fit about RG402 sheath. 16mm apart.</p><p>It's a 1" copper end cap. So much larger than the 10GHz ones you might have seen using the 1/2"/13mm end caps. But the principal is the same.</p><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-hNCYcRFmhM4/YAMggcljMFI/AAAAAAAANB0/u-k92FFwk1YzfwaivAY19UD0PONXtOxVgCLcBGAsYHQ/s2048/DSCN3027.JPG" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-hNCYcRFmhM4/YAMggcljMFI/AAAAAAAANB0/u-k92FFwk1YzfwaivAY19UD0PONXtOxVgCLcBGAsYHQ/s320/DSCN3027.JPG" width="320" /></a></div><div><br /></div>The RG402 make up isn't hard.<div><br /></div><div>You take one end and strip off the teflon insulator and trim the centre conductor to about 4mm and fit a pin over.</div><div><br /></div><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-Tv676yage2o/YAMmfd9OKWI/AAAAAAAANCA/rhetlsHHbHg44l3KjDBk2EF5mCgPDit1QCLcBGAsYHQ/s2048/DSCN3028.JPG" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-Tv676yage2o/YAMmfd9OKWI/AAAAAAAANCA/rhetlsHHbHg44l3KjDBk2EF5mCgPDit1QCLcBGAsYHQ/s320/DSCN3028.JPG" width="320" /></a></div><br /><div><br /></div><div>Then solder on the other part.</div><div><br /></div><div class="separator" style="clear: both; text-align: center;"><br /></div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-Bi5fTqip0Cc/YAMmpMgFHDI/AAAAAAAANCI/VRmV7c-iW2gUKcbtB864BmnFFuZYJRdzACLcBGAsYHQ/s2048/DSCN3030.JPG" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-Bi5fTqip0Cc/YAMmpMgFHDI/AAAAAAAANCI/VRmV7c-iW2gUKcbtB864BmnFFuZYJRdzACLcBGAsYHQ/s320/DSCN3030.JPG" width="320" /></a></div><br /><br /><br /><div><br /></div><div>Then solder into the FR4 (the shield remains below). I'll trim the probes to about 8mm before filling the cap.<div class="separator" style="clear: both; text-align: center;"><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-TKpPMvPMcpo/YAMmo53NvwI/AAAAAAAANCE/h1mLOXFae7IUjrIPS5hWB1VHHMK_TC50wCLcBGAsYHQ/s2048/DSCN3031.JPG" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-TKpPMvPMcpo/YAMmo53NvwI/AAAAAAAANCE/h1mLOXFae7IUjrIPS5hWB1VHHMK_TC50wCLcBGAsYHQ/s320/DSCN3031.JPG" width="320" /></a></div><a href="https://1.bp.blogspot.com/-uERi5qO9u-4/YAMmpupMpdI/AAAAAAAANCQ/B2g_vBLlbFArRyZJKhoX3XBNCyH3QC2awCLcBGAsYHQ/s2048/DSCN3032.JPG" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-uERi5qO9u-4/YAMmpupMpdI/AAAAAAAANCQ/B2g_vBLlbFArRyZJKhoX3XBNCyH3QC2awCLcBGAsYHQ/s320/DSCN3032.JPG" width="320" /></a></div></div><div><br /></div><div><p>You then solder on the end cap, first soldering the brass nut on the central hole so the brass bolt can be screwed in and out and secured by the second nut, I might add a red locking liquid (nail varnish works if the XYL has some she will not miss!). You tune by advancing this bolt. The more you advance the higher in frequency the filter tunes.</p><p><br /></p><p>The soldering of the brass nut and pipe end requires considerable heat, I have a small precision (bit of an oxymoron when talking about a blow torch!) blow torch I use this this work.</p><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-sUS8jPU-bjo/YAMr6VJQVxI/AAAAAAAANCs/S0HJqPegrewZnqfPRbcUwQ05NJykWCb7wCLcBGAsYHQ/s2048/DSCN3033.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-sUS8jPU-bjo/YAMr6VJQVxI/AAAAAAAANCs/S0HJqPegrewZnqfPRbcUwQ05NJykWCb7wCLcBGAsYHQ/s320/DSCN3033.JPG" width="320" /></a></div><br /><p><br /></p><p>I will make up and add the NanoVNA 3GHz scan image here, basically when tuned it will allow the 2.4GHz signal to pass and block frequencies either side, like mixing products. </p></div>Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-513094667326816455.post-79087832993616613072021-01-14T18:31:00.001+00:002021-01-14T18:31:23.529+00:00New hexbeam /Dipole 1:1 FT240-43 balun<p>Decided to make up the DX Hexbeam and Dipole 1:1 FT240-43 balun that had been knocking about for a bit. Based on the W1JR version.</p><p>Rather than fit SO239 or N Type sockets going to add pigtails using N-Type compression fittings.</p><p><br /></p><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-G9gdNHvGAcQ/YACMqJZVfWI/AAAAAAAANBE/L0bxwpTakeA0k4_BB3xXf8wGsFpucaeiACLcBGAsYHQ/s2048/DSCN3021.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-G9gdNHvGAcQ/YACMqJZVfWI/AAAAAAAANBE/L0bxwpTakeA0k4_BB3xXf8wGsFpucaeiACLcBGAsYHQ/s320/DSCN3021.JPG" width="320" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-ef8WhtNBUGo/YACMqOImS-I/AAAAAAAANA8/lhPMHi7BEz0z1kGRf3shdD8fgqvhTk4sACLcBGAsYHQ/s2048/DSCN3023.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-ef8WhtNBUGo/YACMqOImS-I/AAAAAAAANA8/lhPMHi7BEz0z1kGRf3shdD8fgqvhTk4sACLcBGAsYHQ/s320/DSCN3023.JPG" width="320" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-mMGK_jsOyb0/YACMqOX-8-I/AAAAAAAANBA/NcF5sV1iV4Ub9OejduWSSszUBwcVuueGACLcBGAsYHQ/s2048/DSCN3024.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-mMGK_jsOyb0/YACMqOX-8-I/AAAAAAAANBA/NcF5sV1iV4Ub9OejduWSSszUBwcVuueGACLcBGAsYHQ/s320/DSCN3024.JPG" width="320" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-GG-z-M9XXEQ/YACMq2o1DjI/AAAAAAAANBI/d4waf8kV8KsCldmu2Id8rfxIicd06vRrgCLcBGAsYHQ/s2048/DSCN3025.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-GG-z-M9XXEQ/YACMq2o1DjI/AAAAAAAANBI/d4waf8kV8KsCldmu2Id8rfxIicd06vRrgCLcBGAsYHQ/s320/DSCN3025.JPG" width="320" /></a></div><div><br /></div>Coax is teflon cored RG-142. Not 100% it is the correct stuff to use so once made up will put it on a VNA.<br /><p><br /></p>Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-513094667326816455.post-71908168407306498032021-01-14T15:02:00.003+00:002021-01-14T15:02:41.730+00:00HP360 Power Meter FR4 case<p> Just pulling together putting this into a case I'll make from FR4 offcuts.</p><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-KA5jwNNso-A/YABbqA3KN-I/AAAAAAAANAk/lg4JdI8HTDYrK6wHm4-QFxZYAXt-d1VUgCLcBGAsYHQ/s2048/ErrhFp3WMAAgpaX.jpeg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-KA5jwNNso-A/YABbqA3KN-I/AAAAAAAANAk/lg4JdI8HTDYrK6wHm4-QFxZYAXt-d1VUgCLcBGAsYHQ/s320/ErrhFp3WMAAgpaX.jpeg" width="320" /></a></div><br /><p><br /></p><p><br /></p><p>Will add 3 push to make switches an on/off, external DC feed and will add an external SMA.</p><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-UYCjK00I7i4/YABcOCR1S7I/AAAAAAAANAw/0s2VChLYzQESZviMHQ1bVY5oSWPGf1EOQCLcBGAsYHQ/s2048/DSCN3017.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-UYCjK00I7i4/YABcOCR1S7I/AAAAAAAANAw/0s2VChLYzQESZviMHQ1bVY5oSWPGf1EOQCLcBGAsYHQ/s320/DSCN3017.JPG" width="320" /></a></div><br /><p><br /></p><p>getting there, bit bigger than just the HP360 but will fit something else in the case too<span style="color: #0f1419; font-family: -apple-system, system-ui, Segoe UI, Roboto, Helvetica, Arial, sans-serif;"><span style="background-color: rgba(0, 0, 0, 0.03); font-size: 15px; white-space: pre-wrap;">.</span></span></p><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-EJ_cHpsr5os/YABbQltKAOI/AAAAAAAANAc/6XI1gPY0G-kQsuHrPYLxXti4-TKEqeaVgCLcBGAsYHQ/s2048/DSCN3016.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-EJ_cHpsr5os/YABbQltKAOI/AAAAAAAANAc/6XI1gPY0G-kQsuHrPYLxXti4-TKEqeaVgCLcBGAsYHQ/s320/DSCN3016.JPG" width="320" /></a></div><br /><p>Lid (no photo just yet) will be added and the HP360 will screwed into it.</p><p>The switches a DC connector I'll fit to the base before hand. The remaining space will probably be taken up with a simple VSWR meter.</p>Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-513094667326816455.post-50795291553198236242021-01-12T20:13:00.001+00:002021-01-12T20:13:25.125+00:00Mast clamps<p>Will possibly save using so much electrical tape putting up the masts.</p><p>I use telescoping fishing poles a lot and one issue I notice is that I can end up using a lot of electrical tape to secure the sections. Investigated a few options, including using square section rubber tube (with 4mm releasing cable ties inside) which works quite well. Got to thank TX6G for that hint.</p><p>Investigating another option and making up some make clamps from old cycle inner tube, heat-shrink and stainless hose clamp set, you cut the clamp to length.</p>Raw materials:<br /><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-QQ7VHG1WCeY/X_3_M6KSRjI/AAAAAAAANAQ/f5czdQMXaEwahDzNrsAjhoTMKimYN2gmwCLcBGAsYHQ/s2048/DSCN3015.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-QQ7VHG1WCeY/X_3_M6KSRjI/AAAAAAAANAQ/f5czdQMXaEwahDzNrsAjhoTMKimYN2gmwCLcBGAsYHQ/s320/DSCN3015.JPG" width="320" /></a></div><br /><p>First clamp (for base section): Not perfect, I'll get better!</p><p><br /></p><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-zrr8TgnylBY/X_3_M3MhXrI/AAAAAAAANAM/GxbC43Q9iGEKfpANeZWoS5O7iOW4oDAYwCLcBGAsYHQ/s2048/DSCN3014.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-zrr8TgnylBY/X_3_M3MhXrI/AAAAAAAANAM/GxbC43Q9iGEKfpANeZWoS5O7iOW4oDAYwCLcBGAsYHQ/s320/DSCN3014.JPG" width="320" /></a></div><p></p><p>It is a layer effect... heatshrink about some cycle innertube, the clamp runs through so the mast will have the heatshrink and rubber between it and the clamp.</p><p>You cut the rubber and feed it through first then the clamp section and then heat it into place. Feed the tail into the end and feed it in.</p><p>Saw something like this on M4A, G6UW antennas a while back and 'found' I had a bag of bits to make it and through might be fun. I expect need to add some labels on them with white permanent marker and short length of clear heat-shrink over?</p><p>One down, 11 sections per 10m travel pole to go, few less on the longer masts.</p><p>Got 70 odd clamps and the metal strip you cut to length and plenty of old innertube and heatshrink.</p><p>I have a 7mm hex driver, I need to get a 6mm one for these.</p><p>Should make fixing the masts a bit easier. Might not be faster.</p><p>I think Spiderbeam or a DL had a similar website.</p>Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-513094667326816455.post-33898653724424357672021-01-11T18:07:00.001+00:002021-01-11T18:07:06.430+00:00HP 360 RF Power meter<p>Grabbed a 16x2 LCD from the junk box and and added some inpin pins so it plugged in and then to the SMA input port added a couple 3dB attenuators before a small signal generator and fed it in and it seems to be working fine.</p><p><br /></p><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-lGqkWnlL7J0/X_yTbIwsEyI/AAAAAAAAM_w/G2mYL_9ais4XNvjtoddls0zJXIwfxkVkACLcBGAsYHQ/s2048/DSCN3013.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-lGqkWnlL7J0/X_yTbIwsEyI/AAAAAAAAM_w/G2mYL_9ais4XNvjtoddls0zJXIwfxkVkACLcBGAsYHQ/s320/DSCN3013.JPG" width="320" /></a></div><br /><p>The RF Power Meter is rated at < 1W input but it is capable of up to 2.49GHz so should do 13cm even.</p><p>Now to box it up properly.</p><p><br /></p>Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-513094667326816455.post-77936591113395364392021-01-09T17:02:00.007+00:002021-01-09T17:08:35.635+00:00GM328 Put into case and initial tests<p> Ran it off a desktop power supply measured at 9.1V DC.</p><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-uxSJ58xjWX4/X_ng4zDZ-xI/AAAAAAAAM-4/iRSfxHM6Fqwlv_lyWYjtMPmyLCmS0LjQQCLcBGAsYHQ/s2048/DSCN3007.JPG" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-uxSJ58xjWX4/X_ng4zDZ-xI/AAAAAAAAM-4/iRSfxHM6Fqwlv_lyWYjtMPmyLCmS0LjQQCLcBGAsYHQ/s320/DSCN3007.JPG" width="320" /></a></div><br /><p><br /></p><p>Screen reports 9.1V DC.</p><p>Ran through the self test using 100nF capacitor and a set of joined wires to short probes 1-2-3</p><p>A 33nf capacitor with this reported as 33.29nF which tallied with another tester.</p><p>Bit cold in workshop right now so will post a few more images of random junk box/salvaged components then pick this up another day but on face of it seems to be working fine.</p><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-ttUbsuXUTR8/X_ni8-tk2hI/AAAAAAAAM_I/cILpjJQ0UNoTJk6S-tjD842z1ofw6C2IwCLcBGAsYHQ/s2048/DSCN3007.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-ttUbsuXUTR8/X_ni8-tk2hI/AAAAAAAAM_I/cILpjJQ0UNoTJk6S-tjD842z1ofw6C2IwCLcBGAsYHQ/s320/DSCN3007.JPG" width="320" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-wH2dlSF_Gp8/X_ni89Oop-I/AAAAAAAAM_E/kQpB8vsbMD0-jvf3tXXmyQpvAC7yEylRQCLcBGAsYHQ/s2048/DSCN3008.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-wH2dlSF_Gp8/X_ni89Oop-I/AAAAAAAAM_E/kQpB8vsbMD0-jvf3tXXmyQpvAC7yEylRQCLcBGAsYHQ/s320/DSCN3008.JPG" width="320" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-ps1WsixmD_w/X_ni9z8iGOI/AAAAAAAAM_U/E5RLT5U-Ozgoc6Pr13ENGFnyqC50LYe5wCLcBGAsYHQ/s2048/DSCN3010.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-ps1WsixmD_w/X_ni9z8iGOI/AAAAAAAAM_U/E5RLT5U-Ozgoc6Pr13ENGFnyqC50LYe5wCLcBGAsYHQ/s320/DSCN3010.JPG" width="320" /></a></div><br /><p><br /></p>Unknownnoreply@blogger.com2tag:blogger.com,1999:blog-513094667326816455.post-77033624492471356632021-01-09T13:05:00.002+00:002021-01-09T14:07:58.768+00:00GM328 Build board stuffing.<p> Just followed the silkscreen placing components.</p><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-D0tf0X46k0M/X_mpqdanAWI/AAAAAAAAM9I/4z49jPutMakP7zrNK-pX2zcKc2OlIMsCgCLcBGAsYHQ/s2048/DSCN2988.JPG" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-D0tf0X46k0M/X_mpqdanAWI/AAAAAAAAM9I/4z49jPutMakP7zrNK-pX2zcKc2OlIMsCgCLcBGAsYHQ/s320/DSCN2988.JPG" width="320" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/--KOWKwa9UIM/X_mpqeXR_eI/AAAAAAAAM9M/r-kHOsf2cycwiX985--W4KLBpNQC61TFwCLcBGAsYHQ/s2048/DSCN2989.JPG" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/--KOWKwa9UIM/X_mpqeXR_eI/AAAAAAAAM9M/r-kHOsf2cycwiX985--W4KLBpNQC61TFwCLcBGAsYHQ/s320/DSCN2989.JPG" width="320" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-qVcvNDmc-kY/X_mpqQn4jmI/AAAAAAAAM9Q/yBFL1lJtHh8YFHroLmVscP2NniTH7vnfwCLcBGAsYHQ/s2048/DSCN2990.JPG" style="margin-left: 1em; 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margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-4sA2AhZ0mTc/X_mpsz22DhI/AAAAAAAAM94/olGY2ClT91Eg54esnzv1bL9MOLHBfcvNACLcBGAsYHQ/s320/DSCN3000.JPG" width="320" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-vM2cIoEG3jM/X_m4s6brB3I/AAAAAAAAM-c/kgdwmymNcZ4Z7TVRg7AlwGB6Z8IZi4XfQCLcBGAsYHQ/s2048/DSCN3001.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-vM2cIoEG3jM/X_m4s6brB3I/AAAAAAAAM-c/kgdwmymNcZ4Z7TVRg7AlwGB6Z8IZi4XfQCLcBGAsYHQ/s320/DSCN3001.JPG" width="320" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-gvUNTrS7PCc/X_m4s4lZatI/AAAAAAAAM-g/pCKUiao4za0-z1B7yEcic9xTckJlg_LrgCLcBGAsYHQ/s2048/DSCN3002.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-gvUNTrS7PCc/X_m4s4lZatI/AAAAAAAAM-g/pCKUiao4za0-z1B7yEcic9xTckJlg_LrgCLcBGAsYHQ/s320/DSCN3002.JPG" width="320" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-pdToakS9POY/X_m4s6sW8cI/AAAAAAAAM-k/0F_Xlzlkgw03WU3L_-646rqsI7UqcmCYwCLcBGAsYHQ/s2048/DSCN3003.JPG" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-pdToakS9POY/X_m4s6sW8cI/AAAAAAAAM-k/0F_Xlzlkgw03WU3L_-646rqsI7UqcmCYwCLcBGAsYHQ/s320/DSCN3003.JPG" width="320" /></a></div><br /><p><br /></p><p>Not terribly difficult. The Pins on the uPC were a bit bent but straightened fine.</p><p>Noticed a few things missing.</p><p>One 27K resistor and couple terminal blocks.</p>Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-513094667326816455.post-4000525648211459712021-01-07T17:04:00.003+00:002021-01-09T17:44:19.600+00:00GM328 Clone Build.<p> Having bought one of these cheap component testers from China (I assume) I will blog the build here.</p><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-bN_aN-wvpNA/X_c-0YVwgOI/AAAAAAAAM8Y/WhrWq_3OuFoJROGcEOPnP5EBDSPWN89CwCLcBGAsYHQ/s2048/ErIV2TxXIAAyMYU.jpeg" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-bN_aN-wvpNA/X_c-0YVwgOI/AAAAAAAAM8Y/WhrWq_3OuFoJROGcEOPnP5EBDSPWN89CwCLcBGAsYHQ/s320/ErIV2TxXIAAyMYU.jpeg" width="320" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-pkzzFyOequs/X_c-0shPlsI/AAAAAAAAM8c/KYeUPk8M7wU8024gkt2-1QpzuZq_1_c7ACLcBGAsYHQ/s2048/ErIV3Z7XIAADVeY.jpeg" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-pkzzFyOequs/X_c-0shPlsI/AAAAAAAAM8c/KYeUPk8M7wU8024gkt2-1QpzuZq_1_c7ACLcBGAsYHQ/s320/ErIV3Z7XIAADVeY.jpeg" width="320" /></a></div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://1.bp.blogspot.com/-4TqPIXa4GWM/X_c-0px_c7I/AAAAAAAAM8g/Enb2PP9b44Y6-TUR55zOHQPrrb_0PhrBACLcBGAsYHQ/s2048/ErIV21mXAAAaVo1.jpeg" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1536" data-original-width="2048" src="https://1.bp.blogspot.com/-4TqPIXa4GWM/X_c-0px_c7I/AAAAAAAAM8g/Enb2PP9b44Y6-TUR55zOHQPrrb_0PhrBACLcBGAsYHQ/s320/ErIV21mXAAAaVo1.jpeg" width="320" /></a></div><br /><p>Images to follow.</p><p>The manual I found separately <a href="https://drive.google.com/file/d/1KmiXQuLdSBBDubBcgM9OqOi1RH0yn3dn/view" target="_blank">here</a></p><p>There is a nice youtube of someone reviewing it <a href="https://www.youtube.com/watch?v=YdUsomCH5eE" target="_blank">here</a> or another <a href="https://www.youtube.com/watch?v=YdUsomCH5eE&t=176s" target="_blank">here</a></p>Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-513094667326816455.post-20120456045853076642020-07-29T17:12:00.001+01:002020-07-29T17:53:18.593+01:00S9 Calibrator with sidebands<div dir="ltr" style="text-align: left;" trbidi="on">
I knew I had seen it somewhere, wasn't until I started collecting all the radio magazines for scanning I found it. Not that old either.<br />
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S9 Calibrator with sidebands using Si5351 and an Arduino by GW8LJJ, original code was by G7BHQ<br />
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Time to do some bodging.<br />
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Need to make sure CLK0, CLK1 and CLK2 are 1KHz apart about the CLK1 carrier freq.<br /><br />Need to set to the different amateur frequencies.<br /><br />Use the Jason Milldrum <milldrum along="" amp="" gmail.com="" libraries.="" libraries="" nbsp="" ouch="" p="" random="" some="" tft="" with=""><br />
M<milldrum along="" amp="" br="" gmail.com="" libraries.="" libraries="" ouch="" random="" some="" tft="" with=""><span class="css-901oao css-16my406 r-1qd0xha r-ad9z0x r-bcqeeo r-qvutc0">ate an Uno board (cos have one) with 2.8TFT and touch screen as well so get an idea what is enabled. Then should be able to set CLK0,1,2 to various freq in amateur bands. Note to self...1KHz between them.</span></milldrum></milldrum></div>
Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-513094667326816455.post-15629503401482527962020-07-18T12:43:00.000+01:002020-07-18T18:35:53.659+01:00New Balun for hexbeam<div dir="ltr" style="text-align: left;" trbidi="on">
I had started to make up new baluns a while back for use with VDA's and a DX trip but never finished the job. G4AWP gave me a few lengths of RG142 which is really flexible.<br />
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which perfectly suited some FT240-61 cores I had. (should be FT240-43 but don't have any, I have couple FT114-43 but they are much smaller)<br />
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I will be using using reisent winding<br />
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<br />
The baluns in practice look like this. (photo to add here).<br />
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I will fit these just below the Hex beam.<br />
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W1JR is the original designer.<br />
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Will be fed with a split coax tail, so one end of the balun will be a short length of Aircell-5 that will attach to the balun and the hex beam.</div>
Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-513094667326816455.post-27771527795963997382020-07-17T18:38:00.002+01:002020-07-17T19:02:57.826+01:00Antenna mounts for RSGB IOTA<div dir="ltr" style="text-align: left;" trbidi="on">
Just putting in some mounts to put up the RSGB IOTA antennas<br />
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<a href="https://1.bp.blogspot.com/-gixGfSAfntY/XxHglcsu0AI/AAAAAAAALzg/CeTCdn-IPvMQTm7ABpSPLi4oTnJ9RAO8wCLcBGAsYHQ/s1600/IMG_20200717_175432_7.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1200" height="320" src="https://1.bp.blogspot.com/-gixGfSAfntY/XxHglcsu0AI/AAAAAAAALzg/CeTCdn-IPvMQTm7ABpSPLi4oTnJ9RAO8wCLcBGAsYHQ/s320/IMG_20200717_175432_7.jpg" width="240" /></a></div>
<br />
That is the old pole and mast next to it, was on a wooden post.<br />
The green/yellow wire goes to an extensive ground system.<br />
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6 foot scaffolding pole driven in about 3 feet. Pulled back the ground cover fabric, will replace after.<br />
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<a href="https://1.bp.blogspot.com/-6E_RKVwvs8A/XxHgmPNUiAI/AAAAAAAALzk/VwtF5N6EsF8X9Syaf1c2cxpCq3u_9t0RQCLcBGAsYHQ/s1600/IMG_20200717_180453_2.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1200" height="320" src="https://1.bp.blogspot.com/-6E_RKVwvs8A/XxHgmPNUiAI/AAAAAAAALzk/VwtF5N6EsF8X9Syaf1c2cxpCq3u_9t0RQCLcBGAsYHQ/s320/IMG_20200717_180453_2.jpg" width="240" /></a></div>
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Rotator will go on a shorter pole driven right in and here it is being levelled up.<br />
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<a href="https://1.bp.blogspot.com/-pSZZrvd_4d0/XxHgnbhp8II/AAAAAAAALzo/o-Yoiv-6W7gQaK1v4xq5vTiFmef7L32gQCLcBGAsYHQ/s1600/IMG_20200717_180709_8.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1200" height="320" src="https://1.bp.blogspot.com/-pSZZrvd_4d0/XxHgnbhp8II/AAAAAAAALzo/o-Yoiv-6W7gQaK1v4xq5vTiFmef7L32gQCLcBGAsYHQ/s320/IMG_20200717_180709_8.jpg" width="240" /></a></div>
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Rotator (RC5) in place.<br />
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<a href="https://1.bp.blogspot.com/-KSNE6fJnbT0/XxHgnwf7CcI/AAAAAAAALzw/S6aobITm_VkL2LhU8oT98H8QAtHNwQVgQCLcBGAsYHQ/s1600/IMG_20200717_180941_8.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1200" height="320" src="https://1.bp.blogspot.com/-KSNE6fJnbT0/XxHgnwf7CcI/AAAAAAAALzw/S6aobITm_VkL2LhU8oT98H8QAtHNwQVgQCLcBGAsYHQ/s320/IMG_20200717_180941_8.jpg" width="240" /></a></div>
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Testing a 2" tube for fit.<br />
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<a href="https://1.bp.blogspot.com/-LbCauG2Vsy0/XxHgn0qbsNI/AAAAAAAALzs/jXR8DNRR0hQy0eRcgCrJxtN5RArVToILQCLcBGAsYHQ/s1600/IMG_20200717_182056_7.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1200" height="320" src="https://1.bp.blogspot.com/-LbCauG2Vsy0/XxHgn0qbsNI/AAAAAAAALzs/jXR8DNRR0hQy0eRcgCrJxtN5RArVToILQCLcBGAsYHQ/s320/IMG_20200717_182056_7.jpg" width="240" /></a></div>
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Adding pole and checking for true.<br />
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<a href="https://1.bp.blogspot.com/-FQwOtiyFFik/XxHgo0nr-1I/AAAAAAAALz0/Iv5w6fW8oq40rZQNte24GV5m0B4vmdQtQCLcBGAsYHQ/s1600/IMG_20200717_182129_2.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1600" data-original-width="1200" height="320" src="https://1.bp.blogspot.com/-FQwOtiyFFik/XxHgo0nr-1I/AAAAAAAALz0/Iv5w6fW8oq40rZQNte24GV5m0B4vmdQtQCLcBGAsYHQ/s320/IMG_20200717_182129_2.jpg" width="240" /></a></div>
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Top, clears the tree :-)<br />
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Just checking how many ball bearings and fit on the 2" guy rings will use on this pole.</div>
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<a href="https://1.bp.blogspot.com/-s9QDLsbbagA/XxHgk34sHsI/AAAAAAAALzY/VC-Ngjq2GiI8PyJd1Iwsvh9CsIZAIGZ8ACLcBGAsYHQ/s1600/IMG_20200717_163135_2.jpg" imageanchor="1" style="clear: left; display: inline !important; margin-bottom: 1em; margin-right: 1em;"><img border="0" data-original-height="1200" data-original-width="1600" height="240" src="https://1.bp.blogspot.com/-s9QDLsbbagA/XxHgk34sHsI/AAAAAAAALzY/VC-Ngjq2GiI8PyJd1Iwsvh9CsIZAIGZ8ACLcBGAsYHQ/s320/IMG_20200717_163135_2.jpg" width="320" /></a></div>
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A DXhexbeam is the intended antenna.</div>
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<a href="http://www.g3txq-hexbeam.com/index.php/shop/106/10/g3txq-broadband-hexbeam/ultra-lightweight-d-hexpedition-portable-hexbeam-detail.html">http://www.g3txq-hexbeam.com/index.php/shop/106/10/g3txq-broadband-hexbeam/ultra-lightweight-d-hexpedition-portable-hexbeam-detail.html</a></div>
</div>
Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-513094667326816455.post-11871335322645603182020-07-14T09:05:00.001+01:002020-07-14T09:05:31.100+01:002" TV Pole Guy Ring<div dir="ltr" style="text-align: left;" trbidi="on">
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<a href="https://1.bp.blogspot.com/-Rc5wmXbR6TI/Xw1lBVcv9uI/AAAAAAAALxw/NXOupBuO4yQawuKv9ALg5toa1KeweqmSACLcBGAsYHQ/s1600/Screenshot%2Bfrom%2B2020-07-14%2B08-52-27.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="772" data-original-width="1152" height="214" src="https://1.bp.blogspot.com/-Rc5wmXbR6TI/Xw1lBVcv9uI/AAAAAAAALxw/NXOupBuO4yQawuKv9ALg5toa1KeweqmSACLcBGAsYHQ/s320/Screenshot%2Bfrom%2B2020-07-14%2B08-52-27.png" width="320" /></a></div>
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<br />
Been asked what does a 3D printed guy ring this look like so here you go this is on the build plate in Prusa Slicer. I printed in PLA you could print in ABS or PETG if you plan in it being up for a while as PLA is not UV safe, mine is not going to be up for long.<br />
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Safety note: The guys HAVE to go about the pole and then back through the holes, the inner collar fixes to the pole the rotating ring has 6mm metal ball bearings in it, to allow smooth rotation, I also use a lithium grease. The guys are wherethe strength is NOT the plastic! I use 4mm UV safe kevlar guys.<br />
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I have a ground mounted rotator and the pole fits on it. I will put a DX Hexbeam on top, so need to guy it at top and 66% up it (overkill maybe). The pole rotates, the guys don't. I was going to add a set of clamps to the guy rings for a length of LDF450A that will go up the pole (as the feeder) with a flexible bit at top that will cope with the 400 degree (or thereabouts) rotation.<br />
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The hexbeam will be top fed with an RG412 (number?) balun.<br />
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This came from the original Thingiverse buddipole guy ring, I just scaled the SCAD files for the pole I had.<br />
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<a href="https://1.bp.blogspot.com/-DkOB9s91E8Q/Xw1mpnXCkwI/AAAAAAAALx8/YcU1gAreTwk5ojWxGXZVcsxZWT10cyAAgCLcBGAsYHQ/s1600/Screenshot%2Bfrom%2B2020-07-14%2B09-02-29.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="277" data-original-width="427" height="207" src="https://1.bp.blogspot.com/-DkOB9s91E8Q/Xw1mpnXCkwI/AAAAAAAALx8/YcU1gAreTwk5ojWxGXZVcsxZWT10cyAAgCLcBGAsYHQ/s320/Screenshot%2Bfrom%2B2020-07-14%2B09-02-29.png" width="320" /></a></div>
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<a href="https://www.thingiverse.com/thing:2911912">https://www.thingiverse.com/thing:2911912</a><br />
<br /></div>
Unknownnoreply@blogger.com1tag:blogger.com,1999:blog-513094667326816455.post-88188808223728262072020-07-13T18:33:00.001+01:002020-07-13T18:37:18.781+01:00N7DCC ATU<div dir="ltr" style="text-align: left;" trbidi="on">
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<a href="https://1.bp.blogspot.com/-KbO0bWielHE/Xwya0ONLX7I/AAAAAAAALxU/Xun7nP5ydDsN3scPcdxxWyDsN86apSNkwCLcBGAsYHQ/s1600/ATU1.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="800" data-original-width="800" height="320" src="https://1.bp.blogspot.com/-KbO0bWielHE/Xwya0ONLX7I/AAAAAAAALxU/Xun7nP5ydDsN3scPcdxxWyDsN86apSNkwCLcBGAsYHQ/s320/ATU1.jpg" width="320" /></a></div>
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<a href="https://1.bp.blogspot.com/-P3xpsjo0teo/Xwya0--3dJI/AAAAAAAALxc/YyJDBZLG1d8FMW9tvRTCr-yhIOivxsz3ACLcBGAsYHQ/s1600/ATU_SCH.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="800" data-original-width="800" height="320" src="https://1.bp.blogspot.com/-P3xpsjo0teo/Xwya0--3dJI/AAAAAAAALxc/YyJDBZLG1d8FMW9tvRTCr-yhIOivxsz3ACLcBGAsYHQ/s320/ATU_SCH.png" width="320" /></a></div>
<br />
This had created some interest on GQRP list so I ordered it again.<br />
7x7 version arrived... smt PIC this time (1698 derivative), not soldered to the board yet and not programmed either.<br />
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I'll include build notes here.<br />
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Discussions from GQRP Groups list:<br />
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<h4 style="background-color: white; box-sizing: border-box; color: #333333; font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; font-size: 18px; font-weight: 500; line-height: 1.1; margin-bottom: 10px; margin-top: 10px;">
Auto ATU Kit from N7DDC ? anyone tried it?</h4>
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<span class="fa fa-user fa-3x" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 3em; font-weight: 900; line-height: 1;"></span> m0bmn</div>
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<span class="text-muted" style="box-sizing: border-box; color: #777777;"><span style="box-sizing: border-box;" title="Jun 29, 2020 8:07pm">Jun 29</span> </span> <a href="https://groups.io/g/gqrp/message/58743" rel="nofollow" style="background-color: transparent; box-sizing: border-box; color: #337ab7; text-decoration-line: none;"><span class="hidden-xs" style="box-sizing: border-box;">#58743 </span><span class="fa fa-link fa-lg" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 1.33333em; font-weight: 900; line-height: 0.75em; vertical-align: -0.0667em;"></span></a></div>
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Hi Guys,</div>
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Just spent £35 or so on a auto atu kit by N7DCC, it was a bit of a impulse buy which I am already wondering if I have done the right thing.</div>
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Anyone built one?, I only just noticed that it as a lot of SMD parts including the microcontroller. The controller isn’t programmed either having had a read of the notes, the description of the item (eBay ) is a bit poor as it says no need to burn firmware but later (I didn’t read that did I!) say that the chip is supplied blank.</div>
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My eye sight is as not as good as it once was and I dont think I could solder the controller chip anyway.</div>
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If you have tried this kit please let me know.</div>
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Thanks</div>
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Paul M0BMN</div>
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robert miles</div>
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<span class="text-muted" style="box-sizing: border-box; color: #777777;"><span style="box-sizing: border-box;" title="Jun 29, 2020 8:36pm">Jun 29</span> </span> <a href="https://groups.io/g/gqrp/message/58744" rel="nofollow" style="background-color: transparent; box-sizing: border-box; color: #337ab7; text-decoration-line: none;"><span class="hidden-xs" style="box-sizing: border-box;">#58744 </span><span class="fa fa-link fa-lg" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 1.33333em; font-weight: 900; line-height: 0.75em; vertical-align: -0.0667em;"></span></a></div>
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<br style="box-sizing: border-box;" /></div>
<div id="msgbody168339694" style="box-sizing: border-box;">
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<div style="text-align: justify;">
Hi Paul</div>
<div style="text-align: justify;">
Finished mine a couple of weeks ago.</div>
<div style="text-align: justify;">
My first attempt at SMT and got it working after reprogramming the PIC and replacing a relay I burned with the soldering iron.</div>
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I will pm you some lessons learned if you want them.</div>
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Cheers Bob</div>
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GM4CAQ</div>
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<span class="fa fa-user fa-3x" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 3em; font-weight: 900; line-height: 1;"></span> Tim Ostley</div>
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<span class="text-muted" style="box-sizing: border-box; color: #777777;"><span style="box-sizing: border-box;" title="Jun 29, 2020 10:17pm">Jun 29</span> </span> <a href="https://groups.io/g/gqrp/message/58745" rel="nofollow" style="background-color: transparent; box-sizing: border-box; color: #337ab7; text-decoration-line: none;"><span class="hidden-xs" style="box-sizing: border-box;">#58745 </span><span class="fa fa-link fa-lg" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 1.33333em; font-weight: 900; line-height: 0.75em; vertical-align: -0.0667em;"></span></a></div>
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<div id="msgbody168345124" style="box-sizing: border-box;">
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Hi,</div>
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<br style="box-sizing: border-box;" /></div>
<div style="text-align: justify;">
I bought mine from a Russian Amateur who offers these in all stages from a bare PC to ready built and tested. The difference in cost between the full kit and one ready built and tested was only $20 which seemed a good deal with a transformer, 6 or so toroids and about 40 sm components to solder.</div>
<div style="text-align: justify;">
<br style="box-sizing: border-box;" /></div>
<div style="text-align: justify;">
It took nearly four weeks to arrive (as indicated in the advert) and came to about £48 including postage.</div>
<div style="text-align: justify;">
<br style="box-sizing: border-box;" /></div>
<div style="text-align: justify;">
I did need to make two changes to the configuration bytes in the software, one for the display I chose to use and one to reduce the minimum power for tuning from the default 5 watts to 1 watt. I might also make one other change which is to the swr for auto tuning. As standard it will auto tune if the swr drops below 1.6 and on one band the swr was around that value. Whilst talking I found the tuner going into retune mode and then getting confused as the power was going up and down with my speech. You can of course take it out of auto mode but I had not done so! The leads for the bypass and auto buttons have to be soldered on to two small pads on the underside of the board (with the version I received) which were not very well labelled.</div>
<div style="text-align: justify;">
<br style="box-sizing: border-box;" /></div>
<div style="text-align: justify;">
I am quite pleased with it, especially for the price, it works well within the limits of its L and C maxima. It has 7 L and 7 C. It is not as good as the auto atu in my K2 which has 8L and 8C but it does tune faster.</div>
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Best 73’s</div>
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<div style="text-align: justify;">
Tim</div>
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<div style="text-align: justify;">
M0CZP</div>
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<span class="fa fa-user fa-3x" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 3em; font-weight: 900; line-height: 1;"></span> robert miles</div>
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<span class="text-muted" style="box-sizing: border-box; color: #777777;"><span style="box-sizing: border-box;" title="Jun 29, 2020 11:20pm">Jun 29</span> </span> <a href="https://groups.io/g/gqrp/message/58746" rel="nofollow" style="background-color: transparent; box-sizing: border-box; color: #337ab7; text-decoration-line: none;"><span class="hidden-xs" style="box-sizing: border-box;">#58746 </span><span class="fa fa-link fa-lg" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 1.33333em; font-weight: 900; line-height: 0.75em; vertical-align: -0.0667em;"></span></a></div>
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Thanks for the tip about the pads on the reverse of the board.</div>
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I found the experience of building the unit (with magnifying glass and iphone in magnify mode) invaluable.</div>
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Interesting for this group is the built in SWR power meter that uses a tandem match. Not come across this before and he provides info on making FSD of 40W as well as 150w and 1500w!</div>
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I would like to build another with the 5:1 turns ratio to see if it will work better at qrp.</div>
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I built mine with the 10:1 ratio and it only tunes with 4w into a nearly resonant antenna.. much better with 10w. I hope/think for the Flex 1500 the 5:1 ratio will be right on.</div>
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I did manage to melt the case on a relay with my iron and ordered 10 from China .. twice.. so I have 19 spare..</div>
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<span class="fa fa-user fa-3x" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 3em; font-weight: 900; line-height: 1;"></span>Terry VK5TM</div>
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<span class="text-muted" style="box-sizing: border-box; color: #777777;"><span style="box-sizing: border-box;" title="Jun 30, 2020 6:17am">Jun 30</span> </span> <a href="https://groups.io/g/gqrp/message/58747" rel="nofollow" style="background-color: transparent; box-sizing: border-box; color: #337ab7; text-decoration-line: none;"><span class="hidden-xs" style="box-sizing: border-box;">#58747 </span><span class="fa fa-link fa-lg" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 1.33333em; font-weight: 900; line-height: 0.75em; vertical-align: -0.0667em;"></span></a></div>
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I've also built one but not had the chance to hook it up properly and test it.</div>
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Went together ok, but then I am used to working with smd components, bench tests show no problems.</div>
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-- </div>
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Terry VK5TM</div>
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<a href="https://www.vk5tm.com/" style="background-color: transparent; box-sizing: border-box; color: #337ab7; text-decoration-line: none;" target="_blank">https://www.vk5tm.com</a></div>
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<span class="text-muted" style="box-sizing: border-box; color: #777777;"><span style="box-sizing: border-box;" title="Jun 30, 2020 9:00am">Jun 30</span> </span> <a href="https://groups.io/g/gqrp/message/58748" rel="nofollow" style="background-color: transparent; box-sizing: border-box; color: #337ab7; text-decoration-line: none;"><span class="hidden-xs" style="box-sizing: border-box;">#58748 </span><span class="fa fa-link fa-lg" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 1.33333em; font-weight: 900; line-height: 0.75em; vertical-align: -0.0667em;"></span></a></div>
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Our club has been building a number of these and I know there are a few boards (5 ?) fitted with the programmed controller (and possibly a lot more).</div>
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Any interest then PM me</div>
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73 Barry GM4TOE</div>
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<span class="fa fa-user fa-3x" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 3em; font-weight: 900; line-height: 1;"></span> Tim Ostley</div>
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<span class="text-muted" style="box-sizing: border-box; color: #777777;"><span style="box-sizing: border-box;" title="Jun 30, 2020 9:35am">Jun 30</span> </span> <a href="https://groups.io/g/gqrp/message/58749" rel="nofollow" style="background-color: transparent; box-sizing: border-box; color: #337ab7; text-decoration-line: none;"><span class="hidden-xs" style="box-sizing: border-box;">#58749 </span><span class="fa fa-link fa-lg" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 1.33333em; font-weight: 900; line-height: 0.75em; vertical-align: -0.0667em;"></span></a></div>
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Hi,</div>
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As a followup from my last post.</div>
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I didn’t make it clear that I bought the ready built and tested option.</div>
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If you need to program it or change some of the operating parameters then the cheap after market Picit3 works well together with the free download of MPLAB. Bear in mind that you will need the MPLAB IPE (integrated program environment) NOT the IDE (integrated development environment) unless you are going to modify the code rather than the set up parameters. You need 4 wires to connect the Picit to the target micro and you also need to put power into the ATU independently.</div>
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The unit does have auto tune as well as manual tune and a bypass, using 3 buttons. It can be configured in auto mode with no display in order to use it remotely. The relays are not usually latching ones so it needs power all the time it operates but it does remember the last settings after power off / on. </div>
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There are no other band memories although there is some room left on the PIC chip EEPROM. As the software is open source it would be possible to set up band related memories but some sort of band input or frequency counter cct would be needed.</div>
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Hope this is of some use.</div>
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Tim</div>
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M0CZP</div>
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(in a damp Isle of Wight)</div>
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<span class="fa fa-user fa-3x" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 3em; font-weight: 900; line-height: 1;"></span> Paul Bowen</div>
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<span class="text-muted" style="box-sizing: border-box; color: #777777;"><span style="box-sizing: border-box;" title="Jun 30, 2020 4:39pm">Jun 30</span> </span> <a href="https://groups.io/g/gqrp/message/58750" rel="nofollow" style="background-color: transparent; box-sizing: border-box; color: #337ab7; text-decoration-line: none;"><span class="hidden-xs" style="box-sizing: border-box;">#58750 </span><span class="fa fa-link fa-lg" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 1.33333em; font-weight: 900; line-height: 0.75em; vertical-align: -0.0667em;"></span></a></div>
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Ge</div>
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I am putting together 10 for a club project. I have soldered in the pic ic,</div>
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header pins, and a cap and written the hex file to 10 boards. I soldered the</div>
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pic ic by lining up the ic pins hold with blue tack. Then tack one end check</div>
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it then flood the pins with solder and draw off excess solder with good</div>
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quality solder wick. </div>
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There's not much interest in construction so there will be some full kits</div>
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available with detailed instructions and all the surface mount parts fitted.</div>
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I was hoping to sell them at cost price on the TDARS stand in September just</div>
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to get my money back.</div>
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Cheers</div>
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Paul</div>
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M0pnn</div>
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<span class="text-muted" style="box-sizing: border-box; color: #777777;"><span style="box-sizing: border-box;" title="Jun 30, 2020 6:21pm">Jun 30</span> </span> <a href="https://groups.io/g/gqrp/message/58751" rel="nofollow" style="background-color: transparent; box-sizing: border-box; color: #337ab7; text-decoration-line: none;"><span class="hidden-xs" style="box-sizing: border-box;">#58751 </span><span class="fa fa-link fa-lg" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 1.33333em; font-weight: 900; line-height: 0.75em; vertical-align: -0.0667em;"></span></a></div>
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Ge</div>
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Thanks everybody who has asked the list is full now I will email off list</div>
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when all the parts get here etc.</div>
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Cheers</div>
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Paul</div>
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M0pnn</div>
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<span class="fa fa-user fa-3x" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 3em; font-weight: 900; line-height: 1;"></span> <a href="https://groups.io/g/gqrp/profile/@M1KTA" style="background-color: transparent; box-sizing: border-box; color: #337ab7; text-decoration-line: none;">Dom Baines M1KTA</a></div>
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<span class="text-muted" style="box-sizing: border-box; color: #777777;"><span style="box-sizing: border-box;" title="Jul 1, 2020 11:09am">Jul 1</span> </span> <a href="https://groups.io/g/gqrp/message/58752" rel="nofollow" style="background-color: transparent; box-sizing: border-box; color: #337ab7; text-decoration-line: none;"><span class="hidden-xs" style="box-sizing: border-box;">#58752 </span><span class="fa fa-link fa-lg" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 1.33333em; font-weight: 900; line-height: 0.75em; vertical-align: -0.0667em;"></span></a></div>
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Looks interesting for sure.</div>
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Might make for an interesting kit build if you wanted to tinker too as you could program your own ATU as well with specific options if you managed to wade through the code or pick alternate options for L&C combinations that might suit YOUR antenna better especially on the low bands. The uPC source is 'out there' for the 5x5 and 7x7 options.</div>
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Similar you could include different displays.</div>
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I think, might be wrong,, lot depends on your antenna but it is more suited to 40m to 10m, might struggle finding a match on 60m or 80m and definitely not suitable on 160m or 472KHz in most situations.</div>
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72</div>
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Dom</div>
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M1KTA</div>
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<span class="fa fa-user fa-3x" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 3em; font-weight: 900; line-height: 1;"></span> Tim Ostley</div>
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<span class="text-muted" style="box-sizing: border-box; color: #777777;"><span style="box-sizing: border-box;" title="Jul 1, 2020 11:38am">Jul 1</span> </span> <a href="https://groups.io/g/gqrp/message/58753" rel="nofollow" style="background-color: transparent; box-sizing: border-box; color: #337ab7; text-decoration-line: none;"><span class="hidden-xs" style="box-sizing: border-box;">#58753 </span><span class="fa fa-link fa-lg" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 1.33333em; font-weight: 900; line-height: 0.75em; vertical-align: -0.0667em;"></span></a></div>
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Dom,</div>
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It is interesting and indeed you can hack the software. The software is not too bad to follow - there are comments in the code! One of the reasons I got one was because I could make some changes. Thoughts so far include latching relays, 8x8 rather than 7x7 to increase the range and band sensing to provide at least one memory per band to speed up tuning - there should be plenty of EEPROM space. I haven’t looked at the tuning algorithm used but it does work quite quickly. One thing that does need fixing is that the unit can get hung up in the tuning mode when using auto if it can’t get a match and the power is not high enough - if the match is poor the minimum 1W tuning power is not low enough if you only start with 5W or less, depending on the rig. The K2 for instance seems to fold back the power in a mismatch to save the finals. A good idea but it means that the tuner doesn’t get enough to tune properly. Changing the sensing transformer may improve things for qrp but may need changes in the code for the A/D scaling. </div>
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One thing that I couldn’t find is any details of changes / improvements that have been made by other amateurs. </div>
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Best 73’s</div>
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Tim</div>
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M0CZP</div>
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<span class="fa fa-user fa-3x" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 3em; font-weight: 900; line-height: 1;"></span> Terry VK5TM</div>
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<span class="text-muted" style="box-sizing: border-box; color: #777777;"><span style="box-sizing: border-box;" title="Jul 1, 2020 1:26pm">Jul 1</span> </span> <a href="https://groups.io/g/gqrp/message/58754" rel="nofollow" style="background-color: transparent; box-sizing: border-box; color: #337ab7; text-decoration-line: none;"><span class="hidden-xs" style="box-sizing: border-box;">#58754 </span><span class="fa fa-link fa-lg" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 1.33333em; font-weight: 900; line-height: 0.75em; vertical-align: -0.0667em;"></span></a></div>
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The manual has details of the changes needed for QRP use, along with a fair number of other options, including different displays.</div>
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-- </div>
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Terry VK5TM</div>
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<span class="fa fa-user fa-3x" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 3em; font-weight: 900; line-height: 1;"></span> <a href="https://groups.io/g/gqrp/profile/@M1KTA" style="background-color: transparent; box-sizing: border-box; color: #337ab7; text-decoration-line: none;">Dom Baines M1KTA</a></div>
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<span class="text-muted" style="box-sizing: border-box; color: #777777;"><span style="box-sizing: border-box;" title="Jul 1, 2020 1:26pm">Jul 1</span> </span> <a href="https://groups.io/g/gqrp/message/58755" rel="nofollow" style="background-color: transparent; box-sizing: border-box; color: #337ab7; text-decoration-line: none;"><span class="hidden-xs" style="box-sizing: border-box;">#58755 </span><span class="fa fa-link fa-lg" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 1.33333em; font-weight: 900; line-height: 0.75em; vertical-align: -0.0667em;"></span></a></div>
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Tim,</div>
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All praise the N7DCC for releasing the code in the first place, so many manufacturers have kept this all secret squirrel for ages.</div>
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Latching relays have to be done really for /P use otherwise will have to remain energised but of course that means more code munging (I just don't have the time right now). </div>
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Code comments... wasn't an "Agile" project though (a dig at some dev's at work who ignore comments if reference makes no sense). I haven't seen a "don't know what this does but it works so leave it alone" comment yet which is usually a good sign :-)</div>
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A mono OLED display (Nokia 5110 maybe?) is a must too for lower current draw.</div>
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I have not flow charted the algorithm yet, I have looked at a few of these and they seem to all go for a brute force lowest VSWR choice hence the bridge included and relaying on the uPC AD inputs.</div>
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Not sure if it does the memory thing either on frequency.</div>
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Indeed no extra github changes etc.</div>
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I don't have a board infront of me right now but there seemed to be two sources Russia and China. One silkscreen in Blue other Green I don't think it matters either way.</div>
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72</div>
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Dom</div>
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M1KTA</div>
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<span class="fa fa-user fa-3x" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 3em; font-weight: 900; line-height: 1;"></span> Tim Ostley</div>
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<span class="text-muted" style="box-sizing: border-box; color: #777777;"><span style="box-sizing: border-box;" title="Jul 1, 2020 6:59pm">Jul 1</span> </span> <a href="https://groups.io/g/gqrp/message/58757" rel="nofollow" style="background-color: transparent; box-sizing: border-box; color: #337ab7; text-decoration-line: none;"><span class="hidden-xs" style="box-sizing: border-box;">#58757 </span><span class="fa fa-link fa-lg" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 1.33333em; font-weight: 900; line-height: 0.75em; vertical-align: -0.0667em;"></span></a></div>
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Dom,</div>
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The design was done by N7DCC who got it working and promptly put it in the public domain with no restrictions. I bought my ready made board from Russia. The board is nicely made but could be improved by bringing the Auto and Bypass button lands out to the edge of the board for connections rather than leaving VERY small pads on the bottom of the board with no through holes and a slightly broken up silk screen so it is not clear which land is which - traced it back to the chip in the end and had to be very careful soldering on the wires to the switches.</div>
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I have tried both a 0.91 OLED and a standard 16x2 lcd and both work well. You change a couple of configuration bytes and it sorts itself out. Out of the box default is 16x2 lcd and minimum 5w for tuning.</div>
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It is amazing the number of programmers who think code comments are for other people and forget that three months after they have written the code and they have done at least one other project they won’t understand their own code, especially the nuances where there was a very good reason for adopting a particular approach for part of it. I think agile development is write it and ship it fast before anyone asks questions …..</div>
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In terms of the algorithms there are some useful sort / search approaches that can be significantly quicker than plain old sequential. </div>
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It would be nice to change the rig side so that it saw mostly 50 ohms whilst trying to tune.</div>
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To get anything better you are looking at circa £200 for either 8x8 or memories and a lot more if you want both, so £48 including shipping is a good deal. </div>
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Best 73’s</div>
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Tim</div>
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M0CZP</div>
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<span class="fa fa-user fa-3x" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 3em; font-weight: 900; line-height: 1;"></span> Terry VK5TM</div>
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<span class="text-muted" style="box-sizing: border-box; color: #777777;"><span style="box-sizing: border-box;" title="Jul 2, 2020 6:37am">Jul 2</span> </span> <a href="https://groups.io/g/gqrp/message/58761" rel="nofollow" style="background-color: transparent; box-sizing: border-box; color: #337ab7; text-decoration-line: none;"><span class="hidden-xs" style="box-sizing: border-box;">#58761 </span><span class="fa fa-link fa-lg" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 1.33333em; font-weight: 900; line-height: 0.75em; vertical-align: -0.0667em;"></span></a></div>
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Just an update to the QRP mods I mentioned as being in the manual - the manual on Github doesn't have as much info, the manual I had was off a Russian forum and I appear to have overwritten it when I downloaded the latest software update file from Github.</div>
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I'll see if I can find the forum entry again.</div>
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In the meantime, this is what I could find - for QRP, the winding ratio for the transformer was set at 1:5 rather than 1:10 and you need to change the setting in cell 31 to match (that info is on page 13 of the latest github manual). </div>
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You may even be able to go to 1:4, but be vary careful of the power you put through it or you could end up with excess voltage on the inputs of the PIC which will do nasty things to it.</div>
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Terry VK5TM</div>
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<span class="fa fa-user fa-3x" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 3em; font-weight: 900; line-height: 1;"></span> <a href="https://groups.io/g/gqrp/profile/@M1KTA" style="background-color: transparent; box-sizing: border-box; color: #337ab7; text-decoration-line: none;">Dom Baines M1KTA</a></div>
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<span class="text-muted" style="box-sizing: border-box; color: #777777;"><span style="box-sizing: border-box;" title="Jul 2, 2020 9:27am">Jul 2</span> </span> <a href="https://groups.io/g/gqrp/message/58764" rel="nofollow" style="background-color: transparent; box-sizing: border-box; color: #337ab7; text-decoration-line: none;"><span class="hidden-xs" style="box-sizing: border-box;">#58764 </span><span class="fa fa-link fa-lg" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 1.33333em; font-weight: 900; line-height: 0.75em; vertical-align: -0.0667em;"></span></a></div>
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Terry,</div>
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You could play about with Cell 31 but only on the 7x7 version not the 5x5?.... The transformer ratio and resulting voltage in the FWD&REV is always an issue when using a uPC/ADC in this way though isn't it? I am not a prof electronics engineer but thought you could clamp the maximum voltage into the ADC perhaps to VCC if this were a risk but I don't think this has been done, it could though? You use a couple schottky diodes on the input lines before the ADC don't you? RA0 and RA1 on the circuit diagram. The Schottky diodes are chosen for their low forward voltage drop, such that they turn on before the internal protection diodes in the ADC lines, I expect will have to do some data sheet study. Either way the max possible input in this case is 4.096V exceed it and you would probably let the magic smoke out of the ADC but I expect that could be taken up a bit.</div>
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If you look in the code main.h and main.c (version I have anyway) you'll see the code does have an expectation for power> 1500W (assuming whatever physical board it is put on can support that, this one couldn't). Look at void show_pwr(int Power, int SWR) in main.c and void get_pwr() in main.h. The code is being updated though so those references to QRO levels might change soon?</div>
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Could you tweak both the circuit and code to allow for a known lower maximum power level through the transformer possibly for the Vmax so you get a better resolution within that 4.096V maximum? I only know this having done it for early 500KHz and then 472KHz operation having to pay careful attention to both you learnt a bit about FWD/REV transformers. I think Drew Diamonds books, I forget which one even walks you through this in some detail. I think he mentioned phase in one too.</div>
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I admit most probably will not want to recode but then you have the option as the pin headers for the ICSP are there.</div>
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72</div>
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Dom</div>
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M1KTA</div>
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<span class="text-muted" style="box-sizing: border-box; color: #777777;"><span style="box-sizing: border-box;" title="Jul 2, 2020 12:44pm">Jul 2</span> </span> <a href="https://groups.io/g/gqrp/message/58767" rel="nofollow" style="background-color: transparent; box-sizing: border-box; color: #337ab7; text-decoration-line: none;"><span class="hidden-xs" style="box-sizing: border-box;">#58767 </span><span class="fa fa-link fa-lg" style="box-sizing: border-box; display: inline-block; font-family: "font awesome 5 pro"; font-size: 1.33333em; font-weight: 900; line-height: 0.75em; vertical-align: -0.0667em;"></span></a></div>
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Dom.</div>
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Yes, cell 31 only appears in the 7x7 version at the moment and the software for the 5x5 version only goes to 2.7 at last check (7x7 is version 3.0).</div>
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The voltage on the PIC adc pins is a combination of the turns ratio and the power you are feeding through it so if you are aware of your Tx power and have the transformer turns ratio set up correctly, you will be pretty safe.</div>
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PIC's already have the diodes internally on the input pins (but only suitable for overvoltage excursions at low current), so I would be more inclined to fit zener diodes as protection devices. Probably 5.1V types in this case.</div>
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The 4.096 ref voltage is internal to the ADC module and not connected to the input pins from my reading of the datasheet and as such feeding 5V to the input pins shouldn't do any damage. All you are going to get in that case is a maximum reading from the ADC module for the extra 1V applied overvoltage.</div>
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Reading through all the electrical specs shows the max input voltage on all pins is 5.3V except the Cap Sense pins, so again, I couldn't see it causing a problem.</div>
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The version 3 software for the 7x7 board has the facilities to set it up for whatever maximum power level is expected and the 1500w level appears to be staying, as this unit has been used as the basis for other high power tuners.</div>
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Also, the 5x5 tuner is somewhat out of favour according to what I read in the Russian forum some time ago and you will be hard pushed to find any for sale on the regular auction sites that I can find.</div>
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I would have to dig through the code to see if the extra functions could be included in the 5x5 version but I personally couldn't see the point - 5 C and 5 L are somewhat limiting if you are expecting an antenna to cover a few bands.</div>
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Terry VK5TM</div>
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Unknownnoreply@blogger.com4tag:blogger.com,1999:blog-513094667326816455.post-69100613584208781982020-06-27T15:34:00.005+01:002020-06-27T16:02:24.073+01:00NanoVNA V2<div dir="ltr" style="text-align: left;" trbidi="on">
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<a href="https://1.bp.blogspot.com/-q_a_Zlt8ozk/XvddwfkjHhI/AAAAAAAALoA/UzeY8JcMC_UGIC9KOVuehWVZpqqgDD7HACLcBGAsYHQ/s1600/EbhuHeUWoAEjmi3.jpeg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1200" data-original-width="1600" height="240" src="https://1.bp.blogspot.com/-q_a_Zlt8ozk/XvddwfkjHhI/AAAAAAAALoA/UzeY8JcMC_UGIC9KOVuehWVZpqqgDD7HACLcBGAsYHQ/s320/EbhuHeUWoAEjmi3.jpeg" width="320" /></a></div>
<br />
(my own V1 next to a V2)<br />
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<br />
First a tiny bit of history. The original nanoVNA that originated with a japanese engineer has seen a lot of interest, eddy555's original NanoVNA design has already been released for
several years prior to the current NanoVNA popularity boom, but during
those years eddy555 was only selling the product in <a href="https://ttrf.tk/kit/nanovna/" rel="noopener" target="_blank">small quantities as a DIY kitset</a>.<br />
The current low cost NanoVNA's available on the market now are mostly
the "hugen" version known as the NanoVNA-H. Hugen is a ham who
innovated on eddy555's original open source design, adding features like
battery management, improved PCB layout, PC software and extending the
frequency range from 300 MHz to 900 MHz. Then a group HCXQS put together and redesigned the low cost VNA and called it V2.<br />
<br />
From the product pages:<br />
<div style="background: #ffffff; margin-bottom: 13.5000pt; margin-top: 0.0000pt;">
"<b><span style="font-size: 15.0000pt;">S-A-A-2</span><span style="font-size: 15.0000pt;"> NanoVNA V2</span></b></div>
<div style="background: #ffffff; margin-bottom: 13.5000pt; margin-top: 0.0000pt;">
<span style="font-family: "calibri" , "zapf dingbats"; font-size: 18px;"><span style="color: #373b3e;">3GHz
vector network analyzer, designed in collaboration with OwOComm. Under
the LGPL license agreement, it is completely manufactured according to
the v2_2 file</span><span style="color: #373b3e;">s</span><span style="color: #373b3e;"> issued
by OwOComm at https://github.com/nanovna/S-A-A Development Department,
in line with the original technical specifications designed by OwOComm.</span></span></div>
<div data-spm-anchor-id="a2700.wholesale.pronpeci14.i1.5d6e1c5dpZklFr" style="background: #ffffff; margin-bottom: 13.5000pt; margin-top: 0.0000pt;">
<span style="font-family: "calibri" , "zapf dingbats"; font-size: 18px;"><span style="color: #373b3e;">The S-A-A-2</span><span style="color: #373b3e;">/NanoVNA</span><span style="color: #373b3e;">_</span><span style="color: #373b3e;">V2</span><span style="color: #373b3e;"> uses a similar user interface to the NanoVNA, but with a different technical architecture, the S-A-A-2</span><span style="color: #373b3e;">/NanoVNA</span><span style="color: #373b3e;">_</span><span style="color: #373b3e;">V2</span><span data-spm-anchor-id="a2700.wholesale.pronpeci14.i0.5d6e1c5dpZklFr" style="color: #373b3e;"> does
not load the initial calibration data at startup, and does not
automatically interpolate the calibration data after the user changes
the frequency, and must recalibrate or call back the calibration data
after each startup and frequency change. Please read the user manual
carefully before use to avoid damaging the device.</span></span></div>
<div style="background: #ffffff; line-height: 12.0000pt;">
<span style="font-family: "calibri" , "zapf dingbats"; font-size: 18px;"><span style="color: #373b3e;">VNA-QT software download: </span><a href="https://github.com/nanovna/NanoVNA-QT/releases">https://github.com/nanovna/NanoVNA-QT/releases</a></span></div>
<div style="background: #ffffff; line-height: 12.0000pt;">
<span style="font-family: "calibri" , "zapf dingbats"; font-size: 18px;"><span style="color: #373b3e;">nanovna-saver </span><a href="https://github.com/zarath/nanovna-saver/tree/feature/nanovna-v2">https://github.com/zarath/nanovna-saver/tree/feature/nanovna-v2</a></span></div>
<span style="font-family: "calibri" , "zapf dingbats"; font-size: 18px;"><span style="color: #373b3e;">User guide: </span><a href="https://github.com/nanovna/NanoVNA-QT/raw/master/ug1101.pdf">https://github.com/nanovna/NanoVNA-QT/raw/master/ug1101.pdf</a></span><br />
<br />
"<br />
Specifications:<br />
<ul>
<li>Frequency range: <b>50kHz - 3GHz</b></li>
<li>System dynamic range (calibrated): <b>70dB (up to 1.5GHz), 60dB (up to 3GHz)</b></li>
<li>S11 noise floor (calibrated): <b>-50dB (up to 1.5GHz), -40dB (up to 3GHz)</b></li>
<li>Sweep rate: <b>100 points/s</b></li>
<li>Display: <b>2.8'', 320 x 240</b></li>
<li>USB interface: <b>Micro USB</b></li>
<li>Power: <b>USB, 300mA</b></li>
<li>Battery: <b>not included. Includes charging circuitry. User can
install a 1000mAh - 2000mAh lithium-ion battery with maximum dimensions
6 x 40 x 60 mm.</b></li>
<li>Battery connector: <b>JST-XH 2.54mm</b></li>
<li>Maximum sweep points (on device): <b>201</b></li>
<li>Maximum sweep points (USB): <b>1024</b></li>
<li>Port 2 return loss (1.5GHz): <b>20dB typ</b></li>
<li>Port 2 return loss (3GHz): <b>13dB min</b></li>
<li>VNA-QT software supported platforms: <b>Linux, Windows (7+)</b>, Mac OS planned</li>
</ul>
I would suggest that none of the original, later versions or even the V2 are what many might refer to as 'lab grade' equipment but they do provide a tool that will measure RF filters, tune antennas, measure coax cable loss, and find cable faults.<br />
<br />
I have had a few of the original NanoVNA and now I have both an original of obtained from Tindie <a href="https://www.tindie.com/products/hcxqsgroup/nanovna-v2/">https://www.tindie.com/products/hcxqsgroup/nanovna-v2/</a> or <span style="font-family: , "helvetica neue" , "helvetica" , "arial" , sans-serif;"><span style="font-family: , "helvetica neue" , "helvetica" , "arial" , sans-serif;"><a href="https://www.alibaba.com/product-detail/S-A-A-2-NanoVNA-V2_1600053848322.html" style="background-color: #f9f9f9; font-family: museo-sans, 'Helvetica Neue', Helvetica, Arial, sans-serif;">https://www.alibaba.com/product-detail/S-A-A-2-NanoVNA-V2_1600053848322.html</a><i style="font-family: museo-sans, 'Helvetica Neue', Helvetica, Arial, sans-serif;"><b><br /></b></i></span></span>of the V2 and 'clone' from an alternate source (AliExpress) <a href="https://www.aliexpress.com/item/4001055313532.html" target="_blank">https://www.aliexpress.com/item/4001055313532.html</a> , all being in China, this blog post aims to show the similarity, or otherwise, of these two and what sort of measurements are possible.<br />
<br />
I should point out that the design and all the supporting technical information on these is open source. So it is possible to clone them. That means that the original funds the designers the clones do not (not at this time anyway). The impact is that whilst the original might be properly supported the clones may not. <br />
<br />
There have been other open source designs 'ripped off' in this manner and it is the responsibility of the purchaser to ensure that they are not unwityingly supporting piracy of this type.<br />
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My review of the devices will follow here.<br />
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Images of them as they arrived:<br />
The original:<br />
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Side by side the clone (from AliExpress):<br />
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The clone had a small laser cut acrylic case (these photos are with the protective layer still in place), the pieces are clear.<br />
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I will test and compare mine briefly with current devices and the like. A review of this site <a href="https://www.rudiswiki.de/wiki9/nanoVNA#SimSmith_Coax_Cable_S11">https://www.rudiswiki.de/wiki9/nanoVNA#SimSmith_Coax_Cable_S11</a> might be useful.<br />
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I have that RF board mentioned with unmodified U.FL connectors.<br />
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