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equatorial satellite communication system

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  • Communication with submarines — is difficult because radio waves do not travel well through thick electrical conductors like salt water. The obvious solution is to surface and raise an antenna above the water, then use ordinary radio transmissions. Early submarines had to… …   Wikipedia

  • Communications system — Communication system In telecommunication, a communications system is a collection of individual communications networks, transmission systems, relay stations, tributary stations, and data terminal equipment (DTE) usually capable of… …   Wikipedia

  • Equatorial Guinea — Equatorial Guinean. a republic in W equatorial Africa, comprising the mainland province of Río Muni and the island province of Bioko: formerly a Spanish colony. 442,516; 10,824 sq. mi. (28,034 sq. km). Cap.: Malabo. Formerly, Spanish Guinea. * *… …   Universalium

  • Satellite — This article is about artificial satellites. For natural satellites, also known as moons, see Natural satellite. For other uses, see Satellite (disambiguation). An animation depicting the orbits of GPS satellites in medium Earth orbit …   Wikipedia

  • Satellite television — List of digital television broadcast standards DVB standards (Europe) DVB S (satellite) DVB S2 DVB T (terrestrial) DVB T2 DVB C …   Wikipedia

  • Communication avec les sous-marins — Les communications avec les sous–marins en plongée sont techniquement très difficiles, elles nécessitent la mise en œuvre de techniques et d équipements spécifiques. Cette extrême difficulté est due à un effet incontournable : les ondes… …   Wikipédia en Français

  • 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

  • Fiber-optic communication — An optical fiber junction box. The yellow cables are single mode fibers; the orange and blue cables are multi mode fibers: 50/125 µm OM2 and 50/125 µm OM3 fibers respectively. Fiber optic communication is a method of transmitting information from …   Wikipedia

  • Open Communication — In business, Open Communication (or Open Access to Communication resources) can be a term used to describe a concept that anyone, on equal conditions with a transparent relation between cost and pricing, can get access to and share communication… …   Wikipedia

  • Optical communication — is any form of telecommunication that uses light as the transmission medium. An optical communication system consists of a transmitter, which encodes a message into an optical signal, a channel, which carries the signal to its destination, and a… …   Wikipedia

  • Direct-broadcast satellite — For the Japanese communication satellites, see Broadcasting Satellite (Japanese). Direct broadcast satellite (DBS) is a term used to refer to satellite television broadcasts intended for home reception. A designation broader than DBS would be… …   Wikipedia

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