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Radar warning of Pearl Harbor attack. On the morning of 7 December 1941 the SCR-270 radar at the Opana Radar Site on northern Oahu detected a large number of aircraft approaching from the north. This information was conveyed to Fort Shafter ’s Intercept Center. The report was dismissed by Lieutenant Kermit Tyler who assumed that it was a ...
A radar detector is an electronic device used by motorists to detect if their speed is being monitored by police or law enforcement using a radar gun. Most radar detectors are used so the driver can reduce the car's speed before being ticketed for speeding. In general sense, only emitting technologies, like doppler RADAR, or LIDAR can be ...
The history of radar (where radar stands for radio detection and ranging) started with experiments by Heinrich Hertz in the late 19th century that showed that radio waves were reflected by metallic objects. This possibility was suggested in James Clerk Maxwell 's seminal work on electromagnetism.
This is a list of World War II electronic warfare equipment and code words and tactics derived directly from the use of electronic equipment. This list includes many examples of radar, radar jammers, and radar detectors, often used by night fighters; also beam-guidance systems and radio beacons. Many of the British developments came from the ...
Radar warning receiver. Radar warning receiver (RWR) systems detect the radio emissions of radar systems. Their primary purpose is to issue a warning when a radar signal that might be a threat is detected, like a fighter aircraft 's fire control radar. The warning can then be used, manually or automatically, to evade the detected threat.
Best Radar Detectors. Best Overall: Escort MAX 360c. Most Affordable: Cobra RAD 480i. Most User Friendly: K40-Platinum 100 RC. Best Value: Uniden DFR7. Best Display: Escort Redline 360c. The ...