Just to explain that...PCM is no better.
Even the cheapest 2.4GHz are very good these days.

http://www.flyinggiants.com/forums/showthread.php?t=15659

Several years ago I spent an hour on a telephone discussion with Mr Fred Marks. Likely one of the most informed people on the planet when it comes to RC radio, PPM, PCM etc etc. He is the FM in FMA and was involved in getting most or if not all the RC frequencies you use today allocated to RC and not to every tom dick and harry.

He had a very simple explanation of the difference between PPM and PCM that I will never forget.

PPM crashes are normally with the wings level.
PCM crashes are normally with the plane doing some sort of gyroscopic motion.

Results however are the same. CRASH!!!!!!!!

PCM lockout does not save your plane, it does not let you guide it away from the crowd. Until recently it allowed the engine to go to idle. BUT IT DOES NOTHING AT ALL. WHAT SO EVER to make your model safer. Its a myth and way over hyped.

PCM is slower than PPM
PCM can filter out some spurious signals but only until the strength reaches the point where it locks out.

PCM has very minimal advantages if any over a very well installed PPM setup.

But to end it all PCM. PPM and 2.4 Ghz are not capable of rejecting interference 100%. They are crashing today, they will crash tomorrow and that will keep on being the same forever unless you put an autopilot system in like the FMA autopilot so it flies your uncontrolled airplane straight and level until you get signal back.

Several years ago I demonstrated a trainer I had setup with an FMA autopilot. I lined the plane up with the wind, turned the radio off and placed it on the ground. The trainer landed itself as good as anyone could have manually.

This was a PPM 8 channel system with failsafe and auto pilot module.

PCM is old hat, its does nothing PPM cant do and in fact PPM is better, faster and just as capable as any system available today.

Kiwi