I've recently mounted a 3.5mm connector onto a walkie talkie, so that I can plug in a headset. It works really well, though I've had the idea that since it's a stereo jack and the singal is mono, I could use the second connector pin to run signal from microphone to the walkie talkie. I'm not sure how though. Would connecting the microphone's output to one of the microphone contacts on the walkie talkie be enough? If so should it be + or - ? How do electronics usually handle electret microphones? Do send a constant current to one pin and use the second as output (treat the mic as a switch) or is it different? Thanks for any suggestions.
PS: just to clear any confusion I've already attached the microphone output to the stereo jack, I just need to figure out how to attach it to the walkie talkie