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direct radio relay communications

См. также в других словарях:

  • Amateur Radio Emergency Communications — (AREC), formerly the Amateur Radio Emergency Corps , is a service provided by the New Zealand Association of Radio Transmitters (NZART) which provides trained radio communicators and communication systems for emergency situations.Mission… …   Wikipedia

  • 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

  • Communications in Saint Lucia — Telephone Telephones main lines in use:90,000 Telephones mobile cellular:100,000 Telephone system: * Domestic: System is automatically switched. * International: Direct microwave radio relay link with Martinique and Saint Vincent and the… …   Wikipedia

  • Communications satellite — A communications satellite (sometimes abbreviated to COMSAT) is an artificial satellite stationed in space for the purpose of telecommunications. Modern communications satellites use a variety of orbits including geostationary orbits, Molniya… …   Wikipedia

  • Communications in the People's Republic of China — Telecommunications in China redirects here. For the industry, see Telecommunications industry in China. This article is about Communications in the People s Republic of China, excluding Hong Kong and Macau (see Communications in Hong Kong and… …   Wikipedia

  • Communications in Iran — Zohreh redirects here. For the city in Khuzestan, see Zahreh. Iran is among the first five countries which have had a growth rate of over 20% and the highest level of development in telecommunication.[1][2] Iran has been awarded the UNE …   Wikipedia

  • Communications in Israel — Cellular network antennas in Israel The Communications system in Israel is the most developed in the Middle East, although it is not the biggest. Israel s system consists of Coaxial cables, Optical fibers, and Microwave radio relay …   Wikipedia

  • Communications media in Romania — Part of a series on the Culture of Romania Topics …   Wikipedia

  • Communications in Nigeria — Telephones main lines in use:2,469,552 (2007 est.) Mobile Cellular phones : 43,066,679(2007 est.)Telephones mobile cellular:Recent deregulation of the mobile phone market has led to the introduction of Global System for Mobile communication… …   Wikipedia

  • Communications in Namibia — Telephones main lines in use:127,900 (2004), 110,200 (2000), 100,848 (1997)Telephones mobile cellular:495,000 (2005), 82,000 (2000 est.), 20,000 (1998), 450,000 (2006)Telephone system: general assessment good system; about 6 landline telephones… …   Wikipedia

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