I am not prejudiced against PCM, but pointing out that with PPM failsafe systems that in use there is little to distinguish between the two. Many of the advantages of digital communication such as error correction are simply not implemented in model radios. A user who was given a blind test would probably not be able to tell the difference between a PCM or a PPM failsafe system. Given that, would you buy the cheaper one that works with any Tx or the more expensive one that only works with one brand of Tx? Once you answer that, you end up asking the question why have PCM? PCM used to have the clear advantage over PPM for which it could charge a higher price and make you put up with its brand incompatibility. Now it doesn't have the advantage, all it has is high price and incompatibility. Sounds like we could eventually give up PCM altogether. In fact the first brand that used PCM on model radios already has given up PCM altogether.

H