I'm trying to make my Motorola PMMN4013a 2-way radio speaker/mic play nice with my Clearcom unit, standard 4-pin. I soldered it up based on another thread here ( http://www.controlbooth.com/threads/clear-com-headset-pinout.10829/ )- got input to the unit (but PTT was disabled) and no output. I wired it using what standard wire colors to the pinout made sense, but no cigar. My wire colors are:
Black, White, Red, Blue
Has anyone had success with this? Any help? The audio engineer in me wants to think this would be easy....