Funked you can buy several good working laser jammers in the US. The "laser" the cops use works in the infrared spectrum and is relatively easy and LEGAL to jam. Being light it is not governed by the FCC. Halogen lights and the sun at low angles interfere with Laser guns.
In testing my laser jamer(s) I often found the cop would move positions after being jammed. It seems like they get an error message (apparently comes up with an "ambient light" error) and relocate.
There are 3 radar bands, X band, K band, and Ka band. I understand Ka band is not used heavily in the US yet. K band puts out a whopping signal, and is easy to pick up. Ka is very discrete, this is where the cordless detectors fall over.
As for the 'your're breaking the law argument':
I purchased my laser jammer after being ticketed by a cop at a range of 475 metres. At the time there was traffic (trucks) passing in front of him and a vehicle coming up behind me. He targeted me by hand, the manufacturers will not back up these units at 500 metres or more by hand. At 475 metres the beam can sweep 5 metres in one degree of shake. I know he got the guy behind me, I know what my speed was. His response "sir you were the only vehicle on the road".
One guy I worked for got lasered, prepared to be pulled over, only to see the cop whizz past him. He came around the corner to see the cop pulled over with a vehicle the same colour and model as his.
Our cops have quota's to meet, the courts rate their speed measuring equipment to be infalliable, I know different and have protected myself.
