Just a thought - you'd have to somehow integrate a microphone also. I don't see why it couldn't be done though. For listening to the other party talk through your speakers, I'd think you would just need an adapter for going from the headphone jack to the RCA plug on the radio. Then, maybe you could use one of those hands-free headphone/microphone kits and somehow splice the mic into the RCA adapter. Sorry I couldn't be more help. It would be an interesting project.