I found the 4YF page (see below), and it's the only 4-channel Futaba listed with both air & surface channels. AND, the selections are clearly marked "Air" and "Surface". The other two are air only and surface only.

CaseyH46 - Looks to me like you selected a surface radio when you ordered. Why don't you see what your local hobby shop will do for you, or maybe call Tower. They're pretty easy to get along with, but after you've used and flown with this one... it's used. And yes, you're not supposed to fly with a surface frequency radio.

http://www2.towerhobbies.com/cgi-bin...=LXEFJ4**&P=ML

Good luck,
Dave Olson