invest in one of those expensive radar detectors. However, this
device will not work against a gun type radar unit in which the
radar signal is not present until the cop has your car in his
sights and pulls the trigger. Then it is TOO LATE for you to slow
down. A better method is to continuously jam any signal with a
radar signal of your own. I have tested this idea with the
cooperation of a local cop and found that his unit reads random
numbers when my car approached him. It is suprisingly easy to make
a low power radar transmitter. A nifty little semiconductor called
a Gunn Diode will generate microwaves when supplied with the 5 to
10 volt DC and enclosed in the correct size cavity (resonater). An
8 to 3 terminal regulator can be used to get this voltage from a
car's 12v system.