Frequencies 35/36/40/72MHz(This high-precision receiver is complete compatibilitive with Futaba PPM system.) Features: This micro-size [4CH receiver] designed by SMT and precise MC components,having good compatibility and steady actuation signal. You can enjoy your perfect flying by excellent controlling technology。 Purchase receiver only[without RX crystal] As ordering the receiver, please advise designate frequency such as 35/36/40/72MHz , for local market only provide those ferquency opening in Taiwain. If ordering receiving crystal, please advise designate frequency refering to frequency table. Be attention to draw out power plug before turnning off the receiver,and then turn off radio's power to make sure signal is breaking down,avoiding servo vibration and ensuring motor rotation safely。 ※ALIGN receiver and crystal are compatibiliting with Futaba.FM/PPM/PCM【Caution】Must using JR TX/RX crystal when using ALIGN receiver with JR's transmitter,especially on 72MHz
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