Since you never specified which brand of radio you have I would suggest getting a Hitec Supreme 7-Channel Shift Select FM Receiver. It can be set to work with Airtronics/JR radios or Futaba/Hitec radios. Its about $46.00 plus $10.00 for the crystal. Be sure to specify which channel you need. Don't buy a 4 channel reciever. Most of these have a shorter range than the 7-8 channel recievers. Just use channels 1 to 4 for the basics and channel 5 or 6 if you want to use a Volt Watch in the plane. [8D]