i have a jr pcm xp8103 tx and am pretty sure i can use a standard fm rx with it. i've got a jr fm rx, but would have to purchase a ch 31 crystal to be compatable with my tx. sound reasonable?

Check with JR/Horizon to be certain. They will tell you exactly what you need to match up with the equipment you have. Some receivers can be particular. But the 8103 should work on PPM as most computer radios do.

The support guys at Horizon Hobby are very knowledgeable about JR products, give them a call and they will gladly tell you what will work and what wont.

JR8103 is a selectable computerized transmitter so you can select between the two

thanks. was pretty sure i could do it. found my 8103 manual and have programed one of my planes to operate on fm instead of pcm and have ordered a crystal for my receiver. i appreciate the input guys.