Originally Posted by
dusterpilot
I have a push-to-talk (PTT) button permanently installed on my left yoke that works fine. It's the only PTT switch in my aircraft. I hooked up an in-line portable PTT switch on the right yoke, but it doesn't work correctly. I tried a second one with the same result, so I'm thinking it must be the way the aircraft interphone sockets are wired on the aircraft. With my headset connected to the right side interphone receptacles, going through the PTT switch, I have to activate the PTT switch to be heard over the radio or over the interphone. The mic is no longer hot on the interphone system. Any ideas?