ORIGINAL: RCKen
ORIGINAL: tigerdude426
As long as the TX is compatible with the Receiver I don't see why you couldn't just simply change the frequency of the receiver to 22. Isn't it the crystal and not the receiver that determines the high or low frequency?
No, this is not the case. Especially on older Futaba equipment. The receivers are tuned to perform better on either the low channels (low band) or the higher channels (high band). The newer receivers are tuned more towards the center and can go either direction. But on older receivers you need to observe this. The crystals have nothing to do with this, they are just a crystal.
Ken
Actually yes and no. The crystals determine what the freq will be but there are associated circuits that need to be "optimized" for best operation. This is especially true with TX's where they may "splatter" or drift onto adjacent frequencies and interfere. Changing RX crystals
CAN NOT cause interference with other radios but may desensitize the RX to the correct signals.