Details:
This is the Futaba R616FFM 2.4GHz FASST 6-Channel Receiver. Compatible with the following FASST transmitters; 6EX, 7C, and the following transmitter modules; TM7, TM8 (on 7 channel mode), TM10 (on 7 channel mode) and TM14 (on 7 channel mode). .....(more)

Details:
This is the Futaba R124F Ultra Micro FM 72MHz High Band (36-60) 4-ch Receiver for Park Flyers and Slow Fly models. FEATURES: Extremely compact and lightweight-perfect for Park Flyers 650ft (198m) range .....(more)

Details:
This is the Futaba R124F Ultra Micro FM 72MHz Low Band (16-35) 4-ch Receiver. for Park Flyers and Slow Fly models. It is NOT suggested to go below channel 16 with these receivers as you may experience interference. .....(more)