Thanks Bruce for your reply,

Im using JR XF421EX with 72.810 frequency. Hopefully upon my arrival to USA, as I don't know much about Futaba, as I never used it and JR's radio is my first radio. I have a plan to buy JR's XP7202 with synthesized receiver. About 2.4Ghz, Spread Spektrum or this technology, I would jump into it later, but still who knows when Im gonna jump into it. JR 9X with 2.4 Ghz spektrum is pretty expensive, which I don't think I would be able to buy in the first place, but as I would grow, I'd probably jump into Spektrum technology, which seems to be the upcoming future.

Mody