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Radar detector

Radar detectors detect microwave signals from a traffic radar, sound an alert, and inform the driver of the strength of the microwave signals and sometimes location of the radar source. Speed detection systems currently known in the art typically utilize either radar or laser devices in their operation. A speed detection system that utilizes radar may generally be referred to as a so-called radar gun. Radar signals have been commonly used by police for the purpose of detecting and finding the range and speed of moving objects by transmitting a beam of radio frequency or microwave energy in the general direction of the object. A police radar gun is an apparatus which transmits a radar wave of a frequency ranging from microwave to millimeter wave frequencies toward a moving car and detects the frequency shift of the reflected wave. The speed of the car is determined via doppler effect. Police radar detectors are devices for receiving and detecting signals generated by police radar units and generating an audible and/or visual warning signal in response thereto to provide early indication of the presence of the signals to the driver of an automobile. Typical radar detectors are self-contained single units containing receiver circuitry and alert circuitry. The self-contained unit is typically mounted in the vehicle passenger compartment such as against the inside, middle of the windshield so as to detect police microwave and/or laser radar signals.

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