Nathan,
OK, I still don't quite have an answer to this. The Rx I have is the R156F. It is described as "perfect for Slo-fliers and Parkfliers", and all of the information I can find on Futaba's website lists all of their FM Rx's as limited to 200m, even the 6-channels. Neither Hitec or Berg(Castle Creations's) lists what their actual range is on their Rx's(They just say "Full Range"). Since the R156F is what you had recommended, is there any problem with using an R156F in a nitro plane?
Thanks,
Curtis