re radar detector detectors nhowland matt ksu ksu edu neal patrick howland writes from what i understand about radar dectectors all they are is a passive device much like the radio in your car they work as an antenna picking up that radar signals that the radar gun sends out therefore there would be no way of detecting a radar detector any more than there would be of detecting whether some one had a radio in their car unfortunately you re wrong on both counts the most common method of implementing a tunable receiver is to have a local oscillator the local oscillator s frequency can be radiated out of the receiver via the antenna unless the circuit is designed and constructed with great care for a reference on detecting radios get the paperback book spy catcher the author discovered how to detect radio receivers from their local oscillator emissions back in the s while he worked for british intelligence greg greg andrews gerg netcom com fortune cookie radioactive cats have half lives
