UHF 11

Also called USA 174

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General

Designation	28117 / 03057A
Launch date	18 Dec 2003
Country of origin	United States
Mission	Military: telecommunications
Geostationary orbit	unofficial: 71.5°E, inclined
Launch vehicle	Atlas Centaur #142

Same as UHF-10. Was an option to the initial contract. Construction start authorized in Jan 2001.
Satellite and launch costed $193 million

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External resources

sat-index articles

Technical data

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Specifications
UHF
EHF
GBS

In January 2009, Boeing said it successfully reconfigured the satellite, adding 30 percent more communications capability. Its ability to reprogramme existing user channels allowed Boeing to exploit small, unused portions of the allocated radio frequency spectrum to add 10 channels, for a total of 54.

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