Communications Satellite

A communications satellite or comsat is an artificial satellite sent to space for the purpose of telecommunications. Modern communications satellites use a variety of orbits including geostationary orbits, Molniya orbits, elliptical orbits and low (polar and non-polar Earth orbits).

For fixed (point-to-point) services, communications satellites provide a microwave radio relay technology complementary to that of communication cables. They are also used for mobile applications such as communications to ships, vehicles, planes and hand-held terminals, and for TV and radio broadcasting.

Read more about Communications SatelliteHistory, Structure

Other articles related to "satellite, communications, satellites, communications satellite, communications satellites, communication":

Operation Anaconda - Battle - 3 March and 4 March 2002 - Battle of Takur Ghar
... this time command decided to change the frequencies for satellite radio communications which different units, including the AFO teams in their reconnaissance positions, were relying on to conduct and adapt the ... it had the critical effect of severely limiting communications between the different teams participating in the battle ... CH-47 neared their return, the AC-130 radioed on the new satellite frequency for confirmation to fire ...
Commercialization Of Space - History
... The first commercial use of satellites may have been the Telstar 1 satellite, launched in 1962, which was the first privately-sponsored space launch, funded by AT T and Bell Telephone ... signals across the Atlantic Ocean, and was the first satellite to transmit live television, telephone, fax, and other data signals ... Hughes Aircraft Company developed the Syncom 3 satellite, a geosynchronous communications satellite, leased to the Department of Defense ...
Communications Satellite - Applications - Military
... Communications satellites are used for military communications applications, such as Global Command and Control Systems ... Examples of military systems that use communication satellites are the MILSTAR, the DSCS, and the FLTSATCOM of the United States, NATO satellites, United Kingdom satellites (for instance Skynet), and satellites ... Many military satellites operate in the X-band, and some also use UHF radio links, while MILSTAR also utilizes Ka band ...
STS-51 - Advanced Communications Technology Satellite (ACTS)
... The Advanced Communications Technology Satellite was deployed on flight day 1 ... This satellite served as a test bed for advanced experimental communications satellite concepts and technology ... fired on time 45 minutes after deployment and boosted the satellite to geosynchronous altitude on the first day of the mission ...
List Of Communication Satellite Companies
... This is a list of all companies currently operating at least one commercial communication satellite or currently has one on order ... People's Republic of China Chinasat ChinaStar Sinosat Hong Kong APT Satellite Holdings Limited AsiaSat India Agrani ISRO/Antrix (INSAT) ISRO/DECU (EDUSAT・GSA ... Hardware Satellite dish Satellite modem Very small aperture terminal Satellite phone Satellite radio/TV DVB-SH S-DMB DVB-RCS DVB-S2 Digital Audio ...

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