This is the Spektrum DX6 DSM 6CH Park Flyer System in case you don't want to copy and paste the link. It's the 2.4 ghz spread spectrum deal that has generated a bunch of discussion in other threads.

Spread spectrum is touted by some as the solution to frequency conflicts, shootdowns, interference; just about everything except dumb thumbs, and possibly even that. Others say the claims are exaggerated. I have no idea, but reality is probably between the extremes.

I don't know much about the technology of radios but I would guess that something specifically called "Park Flyer System" in the description (multiple times) would have really limited range and not be suited for bigger models.

I'm lucky to be in a small club with very few pilots on the same channel. For me, plain old 72 mhz FM (PPM) works just fine and presents no issues.