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shipboard transmitting antenna

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  • History of radar — The history of radar starts 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.… …   Wikipedia

  • Radar — For other uses, see Radar (disambiguation). A long range radar antenna, known as ALTAIR, used to detect and track space objects in conjunction with ABM testing at the Ronald Reagan Test Site on Kwajalein Atoll …   Wikipedia

  • Maritime mobile amateur radio — An emergency portable boat radio transceiver, Museal ship S/S Sołdek in Gdańsk, Poland Most countries amateur radio licences allow licensed operators to install and use radio transmission equipment while at sea. Such operation is known as… …   Wikipedia

  • radar — /ray dahr/, n. 1. Electronics. a device for determining the presence and location of an object by measuring the time for the echo of a radio wave to return from it and the direction from which it returns. 2. a means or sense of awareness or… …   Universalium

  • Navy Electronics Laboratory — The U.S. Navy Electronics Laboratory (NEL) was created in 1945, with the consolidation of the Navy Radio and Sound Lab and its wartime partner, the University of California Division of War Research. NEL’s charter was “to effectuate the solution… …   Wikipedia

  • Naval Electronics Laboratory — The U.S. Navy Electronics Laboratory ( NEL ) was created in 1945, with the consolidation of the Navy Radio and Sound Lab and its wartime partner, the University of California Division of War Research. NEL’s charter was “ to effectuate the… …   Wikipedia

  • Spark-gap transmitter — A spark gap transmitter is a device for generating radio frequency electromagnetic waves. These devices served as the transmitters for most wireless telegraphy systems for the first three decades of radio (1887 ndash;1916) and the first… …   Wikipedia

  • ACP-131 — is the controlling publication for the listing of Q codes and Z codes. It is published by NATO Allied countries, and revised from time to time. When the meanings of the codes contained in ACP 131 are translated into various languages, the codes… …   Wikipedia

  • Reginald Fessenden — Infobox Celebrity name = Reginald Fessenden caption = The Father of Radio Broadcasting birth date = birth date|1866|10|6|mf=y birth place = East Bolton, Quebec, Canada death date = death date and age|1932|7|22|1866|10|6|mf=y death place = Bermuda …   Wikipedia

  • DAMP Project — The Downrange Anti missile Measurement Program or DAMP was an applied research project to obtain scientific data, just prior to and during re entry, on intermediate and intercontinental range ballistic missiles as they returned to earth. The… …   Wikipedia

  • Marconi Station — The New Brunswick Marconi Radio Station in Somerset, New Jersey, being toured in 1921 by some of the greatest physicists and scientists of the era, including Albert Einstein and Nikola Tesla. The Marconi Wireless Corporation operated numerous… …   Wikipedia

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