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- Fleet_Satellite_Communications_System abstract "FLTSATCOM (also FLTSAT) was a satellite communication system of the U.S. Navy which was used for UHF radio communications between ships, submarines, airplanes and ground stations of the Navy.Most of the transponders on these satellites were simple repeaters with no authentication or control over what they retransmitted. This characteristic led to a subculture of radio pirates in Brazil using modified ham radio equipment to use the satellites without authorization.Altogether eight satellites were launched from 1978 to 1989 by Atlas-Centaur rockets into geostationary orbit. The system became operational in 1981. The satellites were manufactured by TRW. The solar arrays of the satellites had a span of over 13.2 m. A special characteristic was an UHF transmit antenna reflector 4.9 m in diameter. The satellites had 12 transponders, which worked in the UHF range from 240 - 400 megahertz. Additionally FLTSATCOM 7 and 8 had an experimental EHF transponder built by Lincoln Laboratory intended to test the MILSTAR ground terminals. The first seven satellites had a launch mass of 1884 kg and the remaining two were 2310 kg, with the additional mass due to the EHF payload module.The fifth satellite reached geosynchronous orbit, but was unusable due to damage to the solar arrays and antennas. The failure was attributed to explosive delamination of the fiberglass honeycomb fairing during flight. The inside wall of the fairing extensively damaged one of the solar arrays, and bent the transmit antenna mast which prevented the antenna from deploying fully. Flight 7 was launched out of sequence after a launch failure of a Delta mission carrying the GOES-G weather satellite grounded the entire US launch fleet weeks prior to the scheduled launch of F-6. By the time the Delta mishap investigation concluded there was no risk to the Atlas-Centaur system, F-7 was ready to launch and the system managers elected to swap missions to avoid delaying EHF system testing.Flight 6 was destroyed in one of the US space program's more notorious accidents. The Atlas-Centaur was launched on March 26, 1987 into a pouring Florida thunderstorm. At about 30 seconds into the flight, the Atlas was struck by lightning and the resulting static discharge sent an erroneous signal to the guidance computer, causing it to pitch over and break apart from structural stress. The booster exploded and showered burning debris onto LC-36B, which was barely visible through the heavy rain. As a result of this easily preventable disaster, NASA issued strict weather guidelines for all launches.In the late 1990s, FLTSATCOM satellites were gradually replaced by the UFO satellites. FLTSAT flights 7 and 8 continue to provide UHF communications.".
- Fleet_Satellite_Communications_System thumbnail FLTSATCOM.jpg?width=300.
- Fleet_Satellite_Communications_System wikiPageExternalLink fltsatcomQL.html.
- Fleet_Satellite_Communications_System wikiPageExternalLink fltsat.htm.
- Fleet_Satellite_Communications_System wikiPageExternalLink fltsat.htm.
- Fleet_Satellite_Communications_System wikiPageID "9784151".
- Fleet_Satellite_Communications_System wikiPageLength "4281".
- Fleet_Satellite_Communications_System wikiPageOutDegree "21".
- Fleet_Satellite_Communications_System wikiPageRevisionID "673986961".
- Fleet_Satellite_Communications_System wikiPageWikiLink Amateur_radio.
- Fleet_Satellite_Communications_System wikiPageWikiLink Atlas-Centaur.
- Fleet_Satellite_Communications_System wikiPageWikiLink Atlas_G.
- Fleet_Satellite_Communications_System wikiPageWikiLink Category:Military_communications_of_the_United_States.
- Fleet_Satellite_Communications_System wikiPageWikiLink Composite_honeycomb.
- Fleet_Satellite_Communications_System wikiPageWikiLink Florida.
- Fleet_Satellite_Communications_System wikiPageWikiLink GOES-G.
- Fleet_Satellite_Communications_System wikiPageWikiLink Geostationary_orbit.
- Fleet_Satellite_Communications_System wikiPageWikiLink Ham_radio.
- Fleet_Satellite_Communications_System wikiPageWikiLink Honeycomb_structure.
- Fleet_Satellite_Communications_System wikiPageWikiLink Lincoln_Laboratory.
- Fleet_Satellite_Communications_System wikiPageWikiLink MILSTAR.
- Fleet_Satellite_Communications_System wikiPageWikiLink MIT_Lincoln_Laboratory.
- Fleet_Satellite_Communications_System wikiPageWikiLink Milstar.
- Fleet_Satellite_Communications_System wikiPageWikiLink Mission_and_Spacecraft_Library.
- Fleet_Satellite_Communications_System wikiPageWikiLink Pirate_radio.
- Fleet_Satellite_Communications_System wikiPageWikiLink Radio.
- Fleet_Satellite_Communications_System wikiPageWikiLink Radio_communications.
- Fleet_Satellite_Communications_System wikiPageWikiLink TRW_Inc..
- Fleet_Satellite_Communications_System wikiPageWikiLink Thunderstorm.
- Fleet_Satellite_Communications_System wikiPageWikiLink Transponder_(satellite_communications).
- Fleet_Satellite_Communications_System wikiPageWikiLink U.S._Navy.
- Fleet_Satellite_Communications_System wikiPageWikiLink UFO_(satellite).
- Fleet_Satellite_Communications_System wikiPageWikiLink UHF.
- Fleet_Satellite_Communications_System wikiPageWikiLink UHF_Follow-On_System.
- Fleet_Satellite_Communications_System wikiPageWikiLink Ultra_high_frequency.
- Fleet_Satellite_Communications_System wikiPageWikiLink United_States_Navy.
- Fleet_Satellite_Communications_System wikiPageWikiLink File:FLTSATCOM.jpg.
- Fleet_Satellite_Communications_System wikiPageWikiLinkText "FLTSATCOM 7".
- Fleet_Satellite_Communications_System wikiPageWikiLinkText "FLTSATCOM 8".
- Fleet_Satellite_Communications_System wikiPageWikiLinkText "Fleet Satellite Communications System".
- Fleet_Satellite_Communications_System hasPhotoCollection Fleet_Satellite_Communications_System.
- Fleet_Satellite_Communications_System wikiPageUsesTemplate Template:Reflist.
- Fleet_Satellite_Communications_System subject Category:Military_communications_of_the_United_States.
- Fleet_Satellite_Communications_System hypernym System.
- Fleet_Satellite_Communications_System type Communication.
- Fleet_Satellite_Communications_System comment "FLTSATCOM (also FLTSAT) was a satellite communication system of the U.S. Navy which was used for UHF radio communications between ships, submarines, airplanes and ground stations of the Navy.Most of the transponders on these satellites were simple repeaters with no authentication or control over what they retransmitted.".
- Fleet_Satellite_Communications_System label "Fleet Satellite Communications System".
- Fleet_Satellite_Communications_System sameAs إف_إل_تي_سات_كوم.
- Fleet_Satellite_Communications_System sameAs FLTSATCOM.
- Fleet_Satellite_Communications_System sameAs Fleet_Satellite_Communications_System.
- Fleet_Satellite_Communications_System sameAs アメリカ軍の衛星通信.
- Fleet_Satellite_Communications_System sameAs m.02ps2tq.
- Fleet_Satellite_Communications_System sameAs Система_спутниковой_связи_ВМФ_США.
- Fleet_Satellite_Communications_System sameAs xd0xa1xd0xb8xd1x81xd1x82xd0xb5xd0xbcxd0xb0_xd1x81xd1x83xd0xbfxd1x83xd1x82xd0xbdxd0xb8xd0xbaxd0xbexd0xb2xd0xbexd0xb3xd0xbe_xd0xb7xd0xb2xd1x8fxd0xb7xd0xbaxd1x83_xd0x92xd0x9cxd0xa1_xd0xa1xd0xa8xd0x90.
- Fleet_Satellite_Communications_System sameAs Q378548.
- Fleet_Satellite_Communications_System sameAs Q378548.
- Fleet_Satellite_Communications_System wasDerivedFrom Fleet_Satellite_Communications_System?oldid=673986961.
- Fleet_Satellite_Communications_System depiction FLTSATCOM.jpg.
- Fleet_Satellite_Communications_System isPrimaryTopicOf Fleet_Satellite_Communications_System.