ORIGINAL: Kwesdog
ORIGINAL: Sport_Pilot
People fly UAVS with the stuff and they fly well beyond 3000m (yes thats 9000ft)
UAV's don't require 2.4 except possibly for short ranges when taking off or landing. They use other frequencies for long range.
This statement is not entirely true but comparing military grade to a home built FPV system is apples to oranges. Not going to give out technical details but I have been flying military UAS since 2004 (in Afghanistan now typing this) and some line of sight (LOS) systems use 2.4ghz with directional antennas out to a couple of hundred kilometers.
Harry
As I said they use it for short range.