Go down to post # 4
If you notice he says
1) ... We have a few specially tuned Kustom Signals Hawks that were provided to the dept with accompanying VG-2s, the radars are tuned off frequency and those will not set off even some top of the line radar detectors. We we given them to conduct a study dealing with radar detector use, we never had to give them back, they are licensed, we still have them in service.
I'm curious how far off frequency they tune them or if it's just a bunch of bologna.