Flying in South East Alaska is a little different than the lower 48. I have been doing regular radio checks on 122.9 and the range of the radio is good. Say 90 miles at 3500 ft. modulation good until the problem arises. Carrier only, I am guessing the signal strength is good, just no voice.
As far as I can tell there is a transmit relay, I am not sure how it interacts with the intercom and push to talk switch and radio. Been looking for circuit diagrams will little to no luck as to what is in the plane.
I will clean plugs,and inspect all connections. The next time I fly I will bypass the intercom, to see if problem returns.
The plane is parked outside, lots of rain here, corrosion is always a concern. We don't have an avionics shop in town, so you have to sent radios and such out for testing.
Thanks for your input, good things to think about
Bill B
Last edited by B19; 2nd Dec 2014 at 00:08.