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Most of today's radar detectors detect signals across a variety of wavelength bands: usually X, K, and K a. In Europe the K u band is common as well. The past success of radar detectors was based on the fact that radio-wave beams can not be narrow-enough, so the detector usually senses stray and scattered radiation, giving the driver time to ...
Hedy Lamarr (/ ˈ h ɛ d i /; born Hedwig Eva Maria Kiesler; November 9, 1914 [a] – January 19, 2000) was an Austrian-born American actress and inventor. After a brief early film career in Czechoslovakia, including the controversial erotic romantic drama Ecstasy (1933), she fled from her first husband, Friedrich Mandl, and secretly moved to Paris.
The results were encouraging, and the government immediately commissioned construction of 17 additional stations. This became Chain Home, the array of fixed radar towers on the east and south coasts of England. [20] [21] By the start of World War II, 19 were ready for the Battle of Britain, and by the end of the war, over 50 had been built. The ...
Hamstrung by a small budget, challenging technical problems and even a spy, Watson-Watt also has to deal with his own marital problems. By 1939, Watson-Watt and his team have developed the world's first radar system and deployed it along England's southeast coast. In 1940, this system will prove critical in winning the Battle of Britain.
Based on this, Page, Taylor, and Young are usually credited with building and demonstrating the world's first pulsed radar. An important subsequent development by Page was the duplexer , a device that allowed the transmitter and receiver to use the same antenna without overwhelming or destroying the sensitive receiver circuitry.
Dodge David Morgan (January 15, 1932 – September 14, 2010) was an American sailor, businessman, publisher and "self-proclaimed contrarian." [1] He flew fighter jets in the U.S. Air Force in the early 1950s, worked as a newspaper reporter in Alaska, and became a millionaire by operating Controlonics, a company that manufactured Whistler radar detectors from 1971 to 1983.
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The FuG 227 Flensburg was a German passive radar receiver developed by Siemens & Halske and introduced into service in early 1944. It used wing and tail-mounted dipole antennae and was sensitive to the mid-VHF band frequencies of 170–220 MHz, subharmonics of the Monica radar's 300 MHz transmissions.