Christian,

I think you are getting a couple different subjects confused. I believe what you are referring to as "PCCM" is the CCPM (cyclic/collective pitch mixing) used on helicopters. The electronic type of CCPM uses 3 (or 4) servos to control the swashplate movement by the way of mixing functions within the transmitter. Your Shuttle Plus does not use the electronic CCPM mix.

PPM (Pulse Position Modulation) and PCM (Pulse Code Modulation) are a totally different subject referring to the type of modulation used to transmit the signal from transmitter to receiver and is not specific to a type of plane or heli. [link=http://www.dubai*********.org/ppm_or_pcm_or_ipd.htm]PPM or PCM or IPD(New)[/link] is a good description of the differences between these 2 systems. Your Futaba 7C transmitter can be switched to transmit using either PPM or PCM. This is saved in each different model memory, so you can have different types of receivers in each model. The receivers only operate on one type of modulation or the other.

Hope this helped.
Keith