nate1778, Either the Cap9C or 9Z will transmit to both PCM and FM receiver. It's easy to set up the programming for FM, you do it when you first start programming that model. The radio remembers whither it is PCM or FM and will remind you if you have it wrong. The only time it would be wrong is if you were flying a model with PCM or FM and changed models to fly (you can memorize up to 14) and the new selected model had the oppisite resolution then your radio would blink at you and telll you, you need to change the resolution. The way you change it is to cycle the power to the radio. It's that easy.
Thanks.
Barry