The 4YF comes in surface frequencies because some of the sailboat captains and rock crawler drivers prefer the feel of a stick radio too. FWIW, these particular scratch and dent deals are not such deals. I've seen those radios (transmitter and receiver only, to be fair) at several r/c flea markets for $20. Add in 4 servos at regular price and you're still probably ahead......I like my Eclipse, but now that 2.4ghz has flooded the market, $100 for a flightpack w/ 4 servos, a NICAD?! rx pack, and an FM rx doesn't seem so hot anymore. At least they give you 425BB's now; last time I bought a similar flight pack, I had to settle for 325s.