Abstract: A frequency transmitter apparatus for testing a radar detector is provided that comprises a housing having three sections each with an outer surface. The three sections are configured so that the outer surface of each is directed away from the other two outer surfaces. A frequency transmitter is mounted on each section. The apparatus further comprising a device for receiving voltage from a voltage source to power the transmitter, a voltage indicator for monitoring voltage from the voltage source, and a switch for connecting the voltage indicator and the three transmitters to the receiving device. Each section shields the housing from the frequency from each of the three transmitters. The apparatus may, preferably, include a switch-selectable frequency feature.

Abstract: A method and apparatus for performing simple, rapid and accurate tests to determine the operational status of police band radar detecting equipment. A low-power, hand-held transmitter capable of transmitting signals within police radar bands for testing the receiver section and alerting circuitry of a radar detector.