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Old 19th Nov 2018, 7:58 pm   #17
Jon_G4MDC
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Join Date: Nov 2015
Location: Welwyn Garden City, Hertfordshire, UK.
Posts: 2,015
Default Re: 10M FM - any activity these days?

It would be good to capture that mod info. The discussion is raking up some history isn't it?!

My FM10D VFO is ready to go tuning 28.8 to 29.7 in 1kHz steps, shift of -100k for repeaters and +6.0MHz RX LO out (RX is 35MHz crystals). TX uses another output and is divided by 12 (2.5MHz crystals).

Next to do is some interfacing.

I suppose in on the base /grid of the oscillator transistor/valve but remove the capacitors which make them Colpitts. That needs doing in some very sympathetic way - why I am taking my time doing it.
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