Hi Folks,
After more than a month of video-making abstinence I finally managed to make another one.
It’s about the classic Heathkit IG-102 signal generator. 2 Tubes, the 12AT7 and the 6AN8 make up 4 oscillators (3x RF, 1x internal modulation). Some little hack at the end…
if you need some manuals I probably can help you. I can’t put up any manuals ’cause Heathkit was a little cranky about that sort of thing – so until the situation is clear, just ask.
I have had one of those oscillators for a number of years and it has been great for experiments with radio, NMR and proton precession magnetometry. I originally bought it to replace the tubes with solid state, but they work so good I haven’t messed with it. I’ve been looking for spare 7AT12s at hamfests, but so far I have only located XTs which are not capable of the same high frequencies. Thank-you!