In any FUTABA radio control set, it is necessary to have a set of 2 specific FUTABA quartz crystals, one for the transmitter (Tx), the other for the receiver (Rx), in the same band and frequency.
Quartz AM Tolerance 20 Khz ; Frequency : 26 Mhz
Référence Tx : 0100E26815 ; Référence Rx : 0100R26815