JR Sport RS600 6-Channel Universal FM Receiver w/o Crystal This is the JR Radio RS600 6-Channel Universal FM Receiver without Crystal.Based on the popular R700 that topped the performance levels of all other FM receivers tested by a well-known independent lab, JR SPORTs new 6-channel RS600 is a proven, shift-selectable receiver engineered to operate with all major transmitter brands, including Futaba and Hitec.Includes:One JR Radio RS600 6-Channel Universal FM Receiver