futaba raido help
First, they all have the same programming. The 9CA will default to airplane programming and the 9CH will default to heli programming. No biggie. Both versions contain programming for airplane, heli, and sailplane.
The second letter (A or H) denotes what style transmitter you are getting. The A model is tailored to airplanes, with a ratchet on the throttle stick and the trainer switch and two position switch on the upper left. It defaults to airplane programming.
The H model is different in that is has a smooth throttle action, and has a two position tall and three position short switch on the upper left. It defaults to heli programming.
The third letter (P or F) denotes what radio equipment comes with the radio. The P version has a PCM receiver and good servos, while the F version has an FM receiver and standard servos. The heli version comes with a bigger onboard battery and better servos than the airplane version, which adds to the cost.
Hope this helps.