I don't know if they are compatible. Just remember that the only crystal you can swap out is the receiver crystal. You CANNOT legally swap out the transmitter crystal. That's not just one of those "tongue-in-cheek" statements, either. If you swap out the transmitter crystal and cause an accident you are liable. And, it is pretty easy to detect. The guy standing next to you with his radio on may see problems develop when you turn yours on. That's due to the bleed over or incorrectly aligned transmitter.

Get the correct crystal for your receiver. And, if you want to change transmitter channels, send it in to either Futaba or Radio South.

CGr.