Gotta love transparency - especially in government.

~$2,000 US??? LOL!!!

Police cars are so computerized now that there's constant RF traffic in and out of the vehicle.

Use the waze app. See them before they see you. I always try to find a way to photo the trap but if I'm the first one on it, I'm always happy to report "cop here"

Simply marvelous. With all the spying they do on us, it's time to do a little of our own.

We have to have those radiowaves going through our bodies (they're completely harmless), so we should be able to detect them.

I question how well it would work. If you open it up to many types of frequencies and trunking systems, you'll get false positives. If you narrow it down to systems used by majors cities, you'll get false negatives. Also, it should only work when they key the transmitter, unless trunking systems have changed radically since I used to play with them back when electronics was an avocation.