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Topic: Communications satellite

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	Communications satellite - Wikipedia, the free encyclopedia
		A communications satellite (sometimes abbreviated to comsat) is an artificial satellite stationed in space for the purposes of telecommunications.
		A satellite in a geostationary orbit appears to be in a fixed position to an earth-based observer.
		A direct broadcast satellite is a communications satellite that transmits to small DBS satellite dishes (usually 18" to 24" in diameter).
	en.wikipedia.org /wiki/Communications_satellite (2507 words)

	Communications satellite Info - Encyclopedia WikiWhat.com (Site not responding. Last check: 2007-10-22)
		Communications satellites provide a technology that is complementary to that of fiber optic submarine communication cables.
		The concept of the communications satellite was first proposed by Arthur C. Clarke, based on Herman Potočnik's previous work from 1929.
		The first geosynchronous communications satellite that could be seen from a fixed satellite antenna (over North America) was Anik 1, a Canadian satellite launched in 1973.
	wikiwhat.com /encyclopedia/c/co/communications_satellite.html (425 words)

	Communications satellite: Facts and details from Encyclopedia Topic (Site not responding. Last check: 2007-10-22)
		A satellite dish is a type of parabolic reflector antenna designed with the specific purpose of transmitting signals to and/or receiving from satellites....
		Globalstar is a low-earth-orbit satellite constellation for telephone and low-speed data communications, similar to (and competing with) the iridium satellite...
		A spy satellite (officially referred to as a reconnaissance satellite or recon sat) is an earth observation satellite or communications satellite...
	www.absoluteastronomy.com /encyclopedia/c/co/communications_satellite.htm (3406 words)

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