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Asked for some comments on the Chinese atu. Following on from http://m1kta-qrp.blogspot.co.uk/2013/11/chinese-atu-rockmite-sort-of-clo... -
Having moved my shack some time ago I lost the use of the 70cm antenna I had there so had to put up another one. Rather than move the old on... -
Anyone pondering a 455KHz filter for their nice shiny yaesuicomkenwood rig... well I have played about with building a 455KHz filter using c... -
Ever one to have to take a screwdriver to something cheap to see how they have done it I have done it again this time to a GY... -
Following the original by JF3HZB (PW October 2022 p56) I have bodged mine sort of based on the original https://github.com/tjlab-jf3hzb/Digi... -
Bit of an abscence for almost a month.... reason is I had a job/work to do so radio took a back seat for a bit. Just picked up on the discus... -
More investigation. There are two diodes (on my schematic) between the positive power pin and the battery pack. It seems some newer unit... -
Well I posted a question if there were any long wire gurus on the GQRP list a while back to see if anyone else might recommend an alternativ...
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As variable capacitors are not cheap or easily availabe all the time and the use of a varicap diode does not always appear to be an option t... -
Was asked about this so here are a series of photos that hopefully should explain the process. I am sure there might be other (better?) web...
Operating location from a top in alps c2600m
Now this was a perfect SOTA location, I stayed on top overnight and used the flag pole to my right to support a 40m/20m dipole, you can see the fixture I connected to, the little ring clamp, as soon as the cable car stopped for the night out came the radio gear, it even snowed! If I had taken 2m yagi would have been amazing location as line of sight was > 80miles, the Eiger and Jungfau (Bernese Oberland group) are in the photo over my right shoulder. Temp dropped to below minus 15 but the morning operating the grey line was fun 100 or so QSO SSB qrp as HB9/M1KTA/P.
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