Sorry, my new-to-me radio didn't come with a manual. I'm glad that TenTec was
nice enough to post pdf's but the copy isn't that great.
From what I can tell, audio on the IF/AF board goes first to the notch filter.
The AGC is then tapped off this, and the audio then goes to what I don't
understand just yet.
Looks like audio goes to the bandpass filter made of U3 and U4, and goes to
connector 6. But the audio after the notch filter also goes to here. It
almost looks like a fader control here? As in, you could turn the pot full one
way and get one audio path; or full other, and get the other. Or mix (sum) the
two in some way. That would make sense but then I have R64 which looks like a
sneak path around.
[I did see the online mod for hiss reduction; I've ordered the OPA2134 boards
to try that out. Working on seeing if I can make as quiet as my Omni C. :)
Am toying with getting the 1.8kHz filter for some large noise reduction but
waiting on that as it's not cheap!]
Shawn kb1ckt
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