ORIGINAL: speedracerntrixie
He will get the same range regardless of where he is. 2.4 is immune to nothing but the signal hopping keeps the system on a clean signal at all times. If this was a 72 MHZ system I would agree with you.
Not true.
It "keeps" hopping within a rather narrow range of frequencies, that often get swamped by other 2.4gHz devices, especially in residential areas.
I've seen this happen with these particular systems when both multiple WiFi access points are fairly close by and things like Microwaves are turned on.
The other devices swamp the entire spectrum that 2.4 devices use.
Don't assume that "hopping" solves all of the problems.
At normal flying sites the risk of this happening is MUCH MUCH lower because you are not as close in to the emitters.