PPM/PCM has little to do with the servo itself.

It is the mechanism used to transfer data to the receiver.

As far as the servo is concerned it doesn't know if the transmitter is communicating via PCM or PPM.


The UCD 46 will work fine with Standard Servos all around or you can go the recommended route and put a high torque servo on the rudder.

Digital servos are not needed with this plane.

Remember digital servos have great "holding power" which is important for larger planes with big control surfaces and prone to blow back and flutter.

I wouldn't worry about digital servos until you are into something larger than a .60+ sized plane.