We just picked up two of the Talkpod A36 plus radios so my bf and I can keep in contact while skiing this winter (both downhill and XC) I tried plugging in my headphones (Sony MDR-7506) to the radio on the 3.5mm jack and the radio is not muted.

Am I using the wrong cable and it needs to be the 2 jack style? I know I wont be using headphones while out skiing but the earpiece/mic combo, this is more of a curiosity question or many the radio is broken? I also don't have an earpiece / mic thing yet, still trying to find a waterproof, sport specific one. (radio will be covered)

I know nothing about these radios, we just got our GMRS license last month.