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Old 1st Dec 2018, 9:17 am   #51
David G4EBT
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Join Date: Feb 2003
Location: Cottingham, East Yorkshire, UK.
Posts: 5,737
Default Re: FM to AM converter - variation on a theme!

Thanks for your comments Phil.

I was checking the frequency on my counter, and only decided out of curiosity to check the waveform - I'm beginning to wish that I hadn't now!

Basically it's the same circuit as the modulator part of the BVWS FM/AM converter. Simplest thing to do will be to change the transistor, more in hope than expectation.

Yes, the Mini Mods that I've built have had a clean unmodulated output as shown in the pic below.

When I work out how to use the FM module I'll report back on how it sounds.
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