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elevated antenna

См. также в других словарях:

  • Antenna measurement — techniques refers to the testing of antennas to ensure that the antenna meets specifications or simply to characterize it. Typical parameters of antennas are gain, radiation pattern, beamwidth, polarization, and impedance.The antenna pattern is… …   Wikipedia

  • Crossed field antenna — A crossed field antenna, or CFA, is a type of antenna for long and mediumwave broadcasting, patented in 1986, which was claimed to have the same efficiency as a conventional antenna but only one tenth the overall height. The invention was… …   Wikipedia

  • Haiku Valley — Ha ikū Valley is an amphitheater shaped valley on the windward side of the Ko‘olau Range behind Kāne‘ohe, O‘ahu in the Hawaiian Islands. The valley was the site of a U.S. Navy radio transmitting station (later taken over by the U.S. Coast Guard… …   Wikipedia

  • Marconi , Marchese Guglielmo — (1874–1937) Italian electrical engineer Marconi, the second son of a prosperous Italian country gentleman and a wealthy Irishwoman, was born in Bologna, Italy, and educated there and in Leghorn (Livorno). He studied physics under several well… …   Scientists

  • Dahlgren, Illinois — Coordinates: 38°11′57″N 88°41′9″W / 38.19917°N 88.68583°W / 38.19917; 88.68583 …   Wikipedia

  • nephropore — Elevated opening of antennal gland on ventral surface of coxa of antenna [McLaughlin, 1980]. Elevated outlet of antennal gland, located on coxa of antenna [Moore and McCormick, 1969]. (Order Decapoda): Excretory pore [Stachowitsch, 1992] …   Crustacea glossary

  • Clansman — For the book by Thomas Dixon, see The Clansman. Clansman The PRC 320 HF Radio Type Radio Communications System Place of …   Wikipedia

  • Wardenclyffe Tower — (1901 ndash; 1917) also known as the Tesla Tower, was an early wireless telecommunications aerial tower designed by Nikola Tesla and intended for commercial trans Atlantic wireless telephony, broadcasting, and to demonstrate the transmission of… …   Wikipedia

  • Wireless energy transfer — or wireless power is the transmission of electrical energy from a power source to an electrical load without artificial interconnecting conductors. Wireless transmission is useful in cases where interconnecting wires are inconvenient, hazardous,… …   Wikipedia

  • Tesla coil — at Questacon the National Science and Technology center in Canberra, Australia Uses Application in educational demonstrations, novelty lighting, as well as music Inventor …   Wikipedia

  • Invention of radio — Great Radio Controversy redirects here. For the album by the band Tesla, see The Great Radio Controversy. Contents 1 Physics of wireless signalling 2 Theory of electromagnetism …   Wikipedia

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