It's a single conversion RX. I personally wouldn't use it, though there might be some guys who do.

The problem isn't the range, it's that in combat, you get a lot of transmitters going at the same time in close proximity, resulting in a lot of intermodulation, which basically results in a lot of noise all over the band. Duel conversion RX's are better at filtering through that mess.

The RX's range is really more a measure of how good it is as picking out the proper signal from the background noise. As the RX gets farther from your TX, the signal it's looking for gets weaker compared to the background noise. If you increase the background noise, as in combat, the "range" falls off dramatically.