Originally Posted by
kitfox2009
Andy
What radio do you have? On my ICOM A210 I find there is a very fine line between noise and no noise when using the internal intercom. The various programable features such as mic audio input level, intercom squelch level, mic gain, and sidetone seem to require careful adjustments to reduce noise. I have had no luck setting mine when on the ground. I go flying,then turn the flight controls over to my passenger and spend some time playing with these adjustments until the noise is gone and still maintain acceptable audio levels. With the intercom shut off, there is very little noise regardless how the radio is programed. I also installed a push button switch right beside the radio that disconnects the intercom. Flying solo, no intercom. Also handy to isolate the pilot if the passenger is yaking too much!
Good luck, these little glitches can be a real "bear to figure out.
Don