ORIGINAL: bigedmustafa

Receiver frequencies are easy to change, but it depends on the model of the receiver. Transmitter frequencies are not user changable except on "synthesized" radio systems where freq is easily selectable. To change the transmitter crystal frequency, your radio should be sent back in for factory retuning.

With regard to receiver crystals, you can change them out easily enough as long as you know whether you need a single (short crystal) or dual conversion crystal to match the receiver. The additional issue with Futaba receivers is some models are made in high/low band versions. A Futaba receiver that is a "low band model" can be tuned to any frequency from 11 to 35 simply by inserting the appropriate crystal of the frequency desired. A "high band" model Futaba receiver can take any crystal from channel 36 to 60.

Not all Futaba receivers are seperated into low band or high band models. You will need to know more about the models of receiver that you own before you can safely change their frequency. If you change a low-band receiver to a high-band frequency (or high to low), the useful range of the receiver could be significantly reduced. Interference and/or loss of radio control could occur under otherwise normal flying conditions.

Please feel free to ask questions, you don't want to be flying a range-impaired RC plane!