The range you get with those GWS single conversion RXs does depend on what else is going on. If you are on a channel that is "quiet", they get fine range, but they don't reject noise very well, and they respond to a fairly wide band. So flown by themselves you might not notice a problem. Turn on 5 other transmitters and they might glitch like crazy from all the intermodulation going on. And since combat isn't something you do with only one transmitter turned on...