RE: what does all this mean exactly.. fora futaba 9 ch radio
There is no 9CAF or 9CHF transmitter, these are just names of RX/TX packages. All of the 9C transmitters are either 9CHP or 9CAP transmitters, as they are all capable of PPM (commonly just called "FM" ) or PCM (another form of FM). The 9CAF and 9CHF RX/TX packages come with either a 9CAP or 9CHP transmitter, and a PPM receiver. The 9CAP and 9CHP RX/TX packages come with the corresponding radio and a PCM receiver.