 | This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. (January 2018) |
 Artist's impression of a UHF Follow-On satellite in orbit | |
| Country of origin | United States |
|---|---|
| Operator | United States Space Force |
| Applications | Military communications |
| Specifications | |
| Bus | HS-601 |
| Launch mass | 2,844 kg (6,270 lb) |
| Regime | Geosynchronous orbit |
| Design life | 14 years (planned) |
| Production | |
| Status | Active |
| Built | 11 |
| Launched | 11 |
| Lost | 1 |
| Maiden launch | 25 March 1993 |
| Last launch | 18 December 2003 |
Ultra High Frequency Follow-On (UFO) satellite system is a United States Department of Defense (DoD) program sponsored and operated by the United States Space Force to provide communications for airborne, ship, submarine and ground forces. The UFO constellation replaced the U.S. DoD Fleet Satellite Communications System (FLTSATCOM) constellation and consisted of eleven satellites. The ground terminal segment consists of equipment and resident personnel at existing satellite communication stations. The satellites are controlled by the 10th Space Operations Squadron (Space Delta 8) located at the Naval Base Ventura County, Point Mugu, California.