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Inmarsat-4 F3 is a communications satellite operated by the British satellite operator Inmarsat. It was launched into a geosynchronous orbit at 22:43 GMT on 18 August 2008,[1] by a Proton-M/Briz-M Enhanced carrier rocket. It is currently located at 97.65° West longitude, providing coverage of the Americas.[2] It entered service on 7 January 2009.
Like the earlier Inmarsat-4 F1 and F2 satellites, Inmarsat-4 F3 was constructed by EADS Astrium, using a Eurostar E3000 bus. It has a mass of 5,960 kilograms, and is expected to operate for 13 years.[3] It was originally slated for launch using an Atlas V 531, but was transferred to Proton due to a large backlog of Atlas launches.
In the United States, Inmarsat ground stations are licensed to operate at 1525-1559 MHz and 1626.5-1660.5 MHz. The 1544-1545 MHz and 1645.5-1646.5 MHz bands are reserved for safety and distress communications.[2]
Isle of Man, India, Canada, European Union, British Overseas Territories
Human spaceflight, Spacecraft, Payload (air and space craft), Geosynchronous orbit, Communications satellites
Astrium, Eurostar (spacecraft), Eutelsat, Telesat, Inmarsat
Alaska, Global Positioning System, Loran, Canada, Hawaii
Thailand, France, Bangkok, Winds, Gmt
Plesetsk Cosmodrome, Russia, Russian language, Winds, Russian Space Forces
Glonass, Baikonur Cosmodrome, Russia, Russian language, Kosmos 2444
Glonass, Baikonur Cosmodrome, Russia, Russian language, Kosmos 2442