RE: FM or PCM Whats the diff
I have no idea what Hitec’s Q-PCM is but since all brands of PCM are specific to that manufacturer then by definition it will lock you in to Hitec Q-PCM Rx.
I am dubious about saying that Multiplex’s IPD is better than PCM. It is different. It has some advantages, but some disadvantages. What is clear is that IPD is a whole pile better than straight PPM with no failsafe. It gives PPM users a chance to have many of the PCM advantages, with the advantage that it works with absolutely any brand non-computer Tx, allowing for shift compatibility in North America. Mpx claim various things for IPD that are better than PCM but some of them may be fine in the test lab but of limited use or occurrence in the real world.
If I had PCM I would be tempted to stick with it, I don’t think there is anything much to be gained by using IPD instead of PCM. An IPD is cheaper, it may a tiny bit smaller and lighter than PCM Rx.
H