A trooper who continually kept going back and forth on the road (almost as much as KaPro and I did) gave us a nice little surprise of C/O Ka band.
Video shows a few things:
A) Its detection of the K-band sign facing away (though the large truck likely helped its detection by providing a 'canvas' for reflection)... this was one of the best or THE best detection we got from coming up behind the speed sign.
B) The transfer from K-Ka-K band of the Redline.
C) The detection range of the 34.7 from the trooper (remember we are oncoming: essentially doubling how fast we approached him compared to a stationary LEO)...
[ame=http://www.youtube.com/watch?v=MFSaiNNRM40]YouTube - Escort Redline K, Ka, K alert(s).[/ame]