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fixed radio communications

См. также в других словарях:

  • Radio — is the transmission of signals, by modulation of electromagnetic waves with frequencies below those of visible light.Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of… …   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-based train control — CBTC deployment in Metro de Madrid, Spain …   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 the Philippines — Telephones main lines in use:7.3 million (1997)Telephones mobile cellular:41,000,000 (2007)Telephone system:good international radiotelephone and submarine cable services; domestic and interisland service adequate domestic: domestic satellite… …   Wikipedia

  • Radio-frequency identification — (RFID) is a technology that uses radio waves to transfer data from an electronic tag, called RFID tag or label, attached to an object, through a reader for the purpose of identifying and tracking the object. Some RFID tags can be read from… …   Wikipedia

  • Communications in Afghanistan — has dramatically increased since 2002, and has embarked on wireless companies, internet, radio stations and television channels. Afghan telecommunication companies, such as Afghan Wireless and Roshan, have been boasting rapid increase in cellular …   Wikipedia

  • Ministry of Internal Affairs and Communications — 総務省 Sōmushō 2nd Building of the Central Common Government Office, the building which houses the ministry …   Wikipedia

  • Communications in Argentina — gives an overview of the postal, telephone, Internet, radio, television, and newspaper services available in Argentina. Contents 1 Postal 2 Telephone 2.1 Companies 3 Internet …   Wikipedia

  • Communications in Australia — is dominated by the telecommunications provider, Telstra. Other telephone carriers include Optus (owned by Singapore Telecommunications), AAPT and Powertel (both owned by Telecom New Zealand), Soul (SP Telemedia), Vodafone and Hutchison 3G (3… …   Wikipedia

  • Communications in Niue — include postal, telephone, internet, press and radio. Contents 1 Postal 2 Telecommunications services 3 Radio 4 …   Wikipedia

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