Roger is correct. IPD receivers will work with any JR or Airtronics transmitter set to send a PPM signal. But I thought that you could purchase IPD receivers that already had the proper shift for Futaba & Hitec and not have them modified, but perhaps I was wrong. If you want to get one that way, simply go to the Multiplex web site and e-mail Karlton:
http://www.multiplexrc.com/