I actually got 2 detects exceeding 10 miles with Redline over the weekend, both in the same open valley in central Utah on I-15, south of the town of Fillmore. This is an open valley where the interstate rises up and over a hill on both ends. The valley itself is about 15 miles across. Utah Highway Patrol running 34.7 (actual freq was 34.666 - same cop on both runs), one on Friday and the other last night. Cop was parked on ramp running Ka I/O. First was 11.5 miles, the other was around 12.
Sorry, no video - in both cases it was after dark and my camera sucks at night vision.