This is an excerpt from a recent long range flight along the coast, from Tapanappa in the Deep Creek Conservation Park, to beyond Tunk Head. It was my furthest range flight to date, with a turnaround just beyond 8 miles.
Unfortunately there was a recorder malfunction at about the 5 mile point, so I missed the max distance, however the video quality didn't deteriorate much from 5 to 8 miles. I was impressed with the video reception, considering the low angle of elevation. At 8 miles I had an altitude of between 350-800 above launch height, with an elevation of 0-2 degrees, and still had quite acceptable video return.
I have no idea how far I can push this video link.