I was driving back to college and the town police had their back to school speed trap set. The cop uses instant on K-band radar. When I first came across him, he was writing somebody up, and I was getting a very weak (one bar coming and going until I got very close then it was one bar consistently) K band signal. Later, when he was in trap mode, I was getting about 4 bars from 1/2 a mile away (and then it would go off, and then on, then off, and then when my turn I was getting 9 bars...well actually I started getting 9 bars when the car in front of me got hit). So, do instant on guns bleed when they aren't "on"?