Maybe send exitThirteen a PM. If he can't answer your question, then I don't know who else could/would.
Does anyone know if the echo TRBX3 or even TRBX2, can be wired to the AM selctor knob, so it ONLY OPERATES when in AM mode?
Is the selector knob at the AM position hot or ground?
Install a micro switch on the positive wire g oing to board said and doneNot a problem to turn echo on/off, it is an issue of getting it set back when going from ssb to am. Still the question is unanswered.
You want an honest answer I will give it to you straight if you can handle it. Ok, here it is. Only a dip$hit would install an echo board in a fine radio like a 2950 or 2510. That's what a 2018 echo mic is made for. Sorry man just keeping it real.
Install a micro switch on power wire to echo board