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Communications satellite - Wikipedia
https://en.wikipedia.org/wiki/Communications_satellite
WebA communications satellite is an artificial satellite that relays and amplifies radio telecommunication signals via a transponder; it creates a communication channel between a source transmitter and a receiver at different locations on Earth.
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Communications Satellites: Making the Global Village Possible
https://www.nasa.gov/history/communications-satellites/
WebNov 30, 2010 · On April 6, 1965 COMSAT’s first satellite, EARLY BIRD, was launched from Cape Canaveral. Global satellite communications had begun. The Global Village: International Communications. Some glimpses of the Global Village had already been provided during experiments with TELSTAR, RELAY, and SYNCOM.
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Satellite communication | Definition, History, & Facts | Britannica
https://www.britannica.com/technology/satellite-communication
WebMar 12, 2024 · Satellite communication, the use of artificial satellites to provide communication links between various points on Earth. Satellite communications play a vital role in the global telecommunications system. Learn more about satellite communication in this article.
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Communications Satellites | National Air and Space Museum
https://airandspace.si.edu/explore/stories/communications-satellites
WebSatellites positioned in high orbits could "see" large swaths of Earth, allowing them to receive and send signals from distant places. Satellites brought radical change, filling in communication gaps and providing telephone and television connection nearly worldwide.
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A straightforward introduction to satellite communications
https://www.inmarsat.com/en/insights/corporate/2023/a-straightforward-introduction-to-satellite-communications.html
WebSatellite communication is the transfer of information using artificial satellites that have been launched into Earth's orbit, transmitting and relaying information from one place to another on a global scale.
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What is a Communications Satellite? – How They Work and
https://www.thomasnet.com/articles/other/communications-satellite/
WebJun 2, 2021 · A communications satellite is an artificial satellite that sends and receives microwaves between a transmitter and a receiver. They are used in the TV, mobile, internet, radio, and even military sectors.
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Communications Satellite | Encyclopedia.com
https://www.encyclopedia.com/science-and-technology/astronomy-and-space-exploration/space-exploration/communications-satellite
WebJun 27, 2018 · A communications satellite in GEO can "see" about one-third of Earth's surface, so to make global communications possible, three satellites need to be placed in this unique orbit.
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Communications satellite | Orbital Positioning, Data Transfer
https://www.britannica.com/technology/communications-satellite
WebCommunications satellite, Earth-orbiting system capable of receiving a signal (e.g., data, voice, TV) and relaying it back to the ground. Communications satellites have been a significant part of domestic and global communications since the 1970s. Typically they move in geosynchronous orbits about.
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Satellite communication - Orbit, Signals, Relay | Britannica
https://www.britannica.com/technology/satellite-communication/How-satellites-work
WebSatellite communications use the very high-frequency range of 1–50 gigahertz (GHz; 1 gigahertz = 1,000,000,000 hertz) to transmit and receive signals. The frequency ranges or bands are identified by letters: (in order from low to high frequency) L-, S-, C -, X-, Ku -, Ka …
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Fifty Years Ago Today, the First Communications Satellite Was Launched
https://www.smithsonianmag.com/smithsonian-institution/fifty-years-ago-today-the-first-communications-satellite-was-launched-into-space-1454520/
WebJul 10, 2012 · The rocket carried the Telstar communications satellite, the first ever spacecraft that served to actively relay communications signals between distant points on earth. “In essence, it meant...
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