Hitec receiver has channel 1-4 and Channel 6. Port 5 on the receivers can be used with the 6th channel of the transmitter for a second aileron servom, flaps, or flaperons. Not compatable with 5 channel on Flash 5 System X. Single Conversion Accepts all universal and J plugs. Auto shift select (compatable with JR, Futaba, Hitec, Airtronics). Auto gain control

Receiver Crystal