40m Pre-Mix Oscillator Signal Spectrum and Plot
Pin 4 J6 Filter board
20m Pre-Mix Oscillator Signal Spectrum and Plot
Pin 4 J6 Filter board
Adjust the pre-mix filter using an oscilloscope and pin 6 on J6 filter board.
(nice thing is same pin both bands) You realy need 4 hands to video this so apologies poor video.
A signal at last!
2 comments:
What kind of oscilloscope are you using?
Cheap PC usb based dual channel Velleman PCUS1000.
Works well enough and is a digital storage scope, included a couple x10 probes and also contains a 25MHz spectrum analyser.
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