I had Rocky Mountain Radar and it got confiscated by Colorado State Patrol. If you DO get a jammer, remember - after you jam them, the cops KNOW that you are jamming. Immediately slow down, and then turn it off (b/c they WILL target you again and again). I was followed for about 10 miles while watching 1 cop car grow to 3 cop cars. I still had the Rockty Mountain Radar on the whole time (although I was no longer speeding). They knew I was jamming them, then I got pulled over "for out of state plates" (yeah right). They ended up taking the box from me. They key is this - jam them, slow down, then turn it off. Let them clock your new speed (after slowing down) and they will simply think it was a prob w/ the gun. When you drive by a laser/radar gun at point blank range and they can't clock you, be prepared to be followed... and most people on this board will have more violations than just speeding to worry about once you get pulled over. Just a tip from some1 who has been down this road before.