Initial Operational Capability (IOC): 1993
Total Production: 11
Also Known As: Boeing 601, UHF F/O and UHF Follow-On
Origin: United States of America
Corporations: Boeing
Parent System: UFO
Initial Operational Capability (IOC): 1993
Total Production: 11
Total Cost: USD$2.1 billion
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Description: The US Navy UHF Follow-On or UFO satellite constellation was introduced in the 1990s replacing UHF satellites providing a communications network serving ships at sea (primary target) an other fixed and mobile US military terminals. According to US Navy plans, UFO constellation would be replaced by MUOS communications satellite network beginning in 2009.

The UFO satellite is based on commercial Boeing 601 spacecraft adapted for military users through the addition of UHF (Ultra High Frequency) and EHF (Extremely High Frequency) payloads. The latest satellite of this kind, the UFO-11, was launched in late 2003.

The UFO network transmits data at a rate of 2-5 Mbps.

UFO Specifications

Solar Panel Span: 18.3 meter (60 foot)
Weight: 1,364 kilogram (3,007 pound)
CEP: Circular Error Probable
Meters (m)   Kilometers (km)   Nautic Miles (nm)   Inch (in)   Yard (yd)   Foot (ft)   Millimeter (mm)
Pound (lb)   Kilogram (kg)   kN (KiloNewton)   Ton (t)
Meters per Second (mps)   Kilometers per Hour (kph)   Knot (kt)   Miles per Hour (mph)
Liter (l)   Galon (gl)
Year (yr)   Minutes (min)   Second (sec)
Shaft-Horse-Power (shp)

UFO News

There are 5 news between
24 Sep 2004 and 7 Feb 2011
Monday, February 7, 2011US Navy Exercises Contract Option for Lockheed Martin to Build Fifth MUOS Satellite
Wednesday, January 7, 2009Boeing Increases Capability of On-Orbit US Navy Satellite UFO11
Monday, April 9, 2007Department of Defense Releases Selected Acquisition Reports
Tuesday, November 2, 2004MUOS System Will Use 3G Cellular Technology
Friday, September 24, 2004Lockheed-Martin Wins $2 Billion MUOS Contract

Operators & Related Equipment


Grand Total 101

UFO Spacecraft Listing

SerialCountry - Launch Rocket - SiteStatusLaunch DateOperationalRetired
UFO-11 ? - ?2003--
UFO-1 ? - ?1993--

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