Gang, I've had an intermittent problem with my Valcom 760 comm for the last 300 hours. The wiring setup is all per Bob Knuckles Aero'lectric guidelines. Transmit is described as weak, scratchy and unreadable--other time L/C . I seemed to get some improvement with minor adjustments in mike gain, but still not reliably clear transmissions. I finally took it to the radio guy and he checked all frequencies for radiated power and exact frequency transmitted with no abnormalities and the wiring all checks good. His next suggestion is to swap with another Val and see if it's the radio or the airplane. Anybody have other ideas? Anyone want to lend/rent me a Valcom? I'm frustrated...
