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radio-relay tropospheric communications line

См. также в других словарях:

  • Microwave radio relay — is a technology for transmitting digital and analog signals, such as long distance telephone calls and the relay of television programs to transmitters, between two locations on a line of sight radio path. In microwave radio relay, radio waves… …   Wikipedia

  • Radio propagation — is a term used to explain how radio waves behave when they are transmitted, or are propagated from one point on the Earth to another. [ H. P. Westman et al, (ed), Reference Data for Radio Engineers, Fifth Edition , 1968, Howard W. Sams and Co.,… …   Wikipedia

  • Tropospheric scatter — (or troposcatter) is the scattering of distant TV and FM radio stations by the troposphere so that they travel farther than the line of sight. This effect sometimes allows reception of stations up to a hundred miles away.The phenomenon has been… …   Wikipedia

  • Communications in Egypt — Life in Egypt Culture Cuisine …   Wikipedia

  • Communications in Greece — Telecommunications= OTE, the former state monopoly, is the main player in fixed line telephony. Since the liberalization of the telecommunications market, OTE has been slowly losing market share to alternative , competing telecom operators, such… …   Wikipedia

  • Communications in Mozambique — Telephones main lines in use:69,700 (2004)Telephones mobile cellular:2,360,000(2007)Telephone system: general assessment: fair system but not available generally (less than 1 main line per 100 persons) domestic: the system consists of open wire… …   Wikipedia

  • Non-line-of-sight propagation — Non line of sight (NLOS) or near line of sight is a term used to describe radio transmission across a path that is partially obstructed, usually by a physical object in the innermost Fresnel zone. Many types of radio transmissions depend, to… …   Wikipedia

  • White Alice Communications System — The White Alice Communications System (WACS) was a United States Air Force telecommunication link system constructed in Alaska, during the cold war. It featured tropospheric scatter links and line of sight microwave radio links. It was… …   Wikipedia

  • List of radio propagation topics — This is a list of radio propagation terms. NOTOC A a index A index aa index active prominence active prominence region (APR) active region active surge region (ASR) active dark filament (ADF) AE index Air Force Geophysics Laboratory (AFGL) arch… …   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

  • Tanzania — Tanzanian, n., adj. /tan zeuh nee euh/; Swahili. /tahn zah nee ah/, n. a republic in E Africa formed in 1964 by the merger of the republic of Tanganyika and the former island sultanate of Zanzibar (including Pemba and adjacent small islands).… …   Universalium

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