As the title says whats the difference between FM and PCM radios? I have a Futaba T7CHP radio that is PCM that I am sending off for repairs, depending on if they can fix it and how much its going to be, the other option after they tell me the prognosis of the radio is to buy another one. I want to buy another Futaba 7C since I am already familiar with it. But it comes in either PCM and FM, the FM is about 50 bucks cheaper. All I fly are slimer planes. Whats the pros and cons?