Help,
Does anybody know if the Module(FP-KP-FM) from the 3PK will work on the old 3PJ. The original module(FP-TJ-FM) is no longer available. Futaba states
the FAST module kit for the 3PK will work. f so, will the stock the FM module work? Thanks

I have both radios and I want to say yes, I think they will interchange. I think I remember seeing this discussed somewhere and the answer was yes, but I'm not completely sure. As you said the 2.4FAAST module is known to interchange.

Maybe the best thing is to call them and ask. They've been pretty good about helping me when I needed ques answered -

E-mail: [email protected]
Web Site: http://www.futaba-rc.com/
Phone: 217-398-8970

I can tell you for certain that the 3PK 75 mHz fixed freq. modules and 75 mHz Synth modules both work in my son's 3PJS, he's currently using the synth TX module with no problems.

I can add that my Futaba Synth FM module works on my hitec SRX.

Thanks, thats answers some other questions as well. Now I know I can run any of teh modules I have for my 3PK in my 3PJS if I need or want to.

Thanks for the replys,
I e-mailed Futaba and they state the module for the 3PK will not work, but there FAAST system for the 3PK will work. Now I'm stumped, why would one work but not the other. For the people that state that it does work, thanks.
I really would like to see it for myself. I guess I'll take the plunge and buy one off E-bay. I just hate to spend money on something that might not work. Is anybody on here willing to let me try one? Before I buy one. THANKS