RE: Question about Radio's
You would have to check with the distributor but in most cases, pcm or ppm is just a menu selection that is model specific. Like I said its not changing the RF, its still an FM signal, its just different information thats being encoded and transmitted. You do have to power cycle the transmitter after you switch models to one that has different modulation. My 9C flashes PCM or PPM until you power cycle it.