Most car drivers wanting to make better time on the highway will arm themselves with an expensive radar detector. However this device will not work against a gun type radar device in which the radar signal is not present until the patrol officer has you automobile in his sights and pull the trigger. It’s then too late to lower your speed.
Jamming any radar signal continuously from your own vehicle is a much better procedure. I have tested this idea with the cooperation of a local police officer and found that his unit displayed random numbers when my car approached him. A low power radar transmitter can be built surprisingly easily.
A nifty little semiconductor called a Gunn diode will transmit microwaves when supplied with 5 to 10 vdc and enclosed in the correct size cavity (resonator). There are many ways to gain this voltage in-car, an effective way to do itis to use an 8 to 3 terminal regulator. A good microwave detection device will enable you to fine tune your radar jammer to the point of perfection, without one, however, it can be hit-and-miss. Patrol officer radars usually operate on the K band at 22 GHz. or generally on the X band at 10.525 GHz. Almost all alarms and motion detectors that use microwaves (can be observed above automatic doors in shops, etc.) contain a Gunn type transmitter/receiver combination that transmits about 10 milliwatts at 10.525 ghz.
These little units work great as jammers. If you can’t get any in your area write to Microwave Associates in Burlington, Mass. and you need to ask for info on “Gunnplexers” – which are generally used from ham radio. It is best to mount this finished jammer in an inconspicuous position behind the grille in a waterproof box, alternatively it can be mounted somewhere on the dash. When on the open road, switch on the power.
The unit will not jam radar to the side of behind the car so don’t go speeding past the radar trap. Something interesting to observe is that any vehicle in front of you fitted with a detector will slam on their brakes as you approach large flat objects. The signal produced by your jammer is bouncing off the things and setting off their radar detectors.
Instead of having to beat a speeding ticket, why not just avoid one in the first place.
