I have a GMA 240 and it has a lot of for the lack of a better term "white noise" when I turn it on. It is not alternator, or ignition noise. In fact, with everything off except the avionics, it is still there. When I turn it off, and transmit on my 430W there is NO noise in the audio at all. It's white noise only there when I have the 240 turned on. I have adjusted the intercom, thought it might be that, no effect. I've pushed every button on it and no effect. I tried a friend of mines PS engineering panel in the rack and it is at least 1/2 the noise as the 240. Anybody have any ideas?
thx
thx