Olnico of this forum has regularly got 6km measured range with his favourite system.
GPS on my jets shows I sometimes fly 1.6km away, data logging per second shows the Rx is still getting 95 - 100% frames/second at that distance. (Same system as Olnico)
The manufacturer claims greater than 3km range with an unobstructed view.
I think range is more dependent on the Rx than the Tx.
Originally Posted by ticketec
Using a white coloured 1.2m span slow moving model I was able to see it up to about 1.2-1.3km away, but that's only if I watched it all the way out. After about 700-800m it is almost impossible to look away and find it again in any reasonable amount of time. working out which way it's going was pretty much un-achievable either. so that's roughly how far an average person can see a model.
1.2m is a small model and is not representative of the typical jet model size.