I am not sure about that, I have only swapped crystals. I do feel if your range does not change when you perform the swap, I would think it is fine. If you have any difference in range then you better call either Futaba or Hitec for the answer.
Chip
ORIGINAL: krokko

I have a Hitec Eclipse and a Futaba FF9. Q: Is it possible to swap RF modules between them without any problems?