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  2. GPS Block III - Wikipedia

    en.wikipedia.org/wiki/GPS_Block_III

    The Contingency Operations effort enables GPS III satellites to participate in the GPS constellation, albeit in a limited fashion, without having to wait until OCX Block 1 becomes operational (scheduled for 2022). The United States Space Force awarded the US$96 million Contingency Operations contract in February 2016. [74]

  3. List of USA satellites - Wikipedia

    en.wikipedia.org/wiki/List_of_USA_satellites

    Fifth GPS Block III satellite, named Neil Armstrong: USA-320: 2022-01-13 2022-002CV Falcon 9 Block 5: Unknown Launched with USA-321, USA-322 and USA-323 on Transporter 3 Rideshare Launch. Likely the satellites were built by SpaceX based on the Starshield bus (based on Starlink Block v1.5 technology), were deployed by the US army.

  4. List of GPS satellites - Wikipedia

    en.wikipedia.org/wiki/List_of_GPS_satellites

    Samples of three GPS satellites' orbits over a five-year period (2013 to 2018) USA-242 · USA-239 · USA-151 · Earth As of 22 January 2025, 83 Global Positioning System navigation satellites have been built: 31 are launched and operational, 3 are in reserve or testing, 43 are retired, 2 were lost during launch, and 1 prototype was never launched. 3 Block III satellites have completed ...

  5. USA-214 - Wikipedia

    en.wikipedia.org/wiki/USA-214

    USA-214, also known as Advanced Extremely High Frequency-1 or AEHF-1, is a military communications satellite operated by the United States Air Force.It is the first of six satellites to be launched as part of the Advanced Extremely High Frequency program, which will replace the earlier Milstar system.

  6. GPS Block IIIF - Wikipedia

    en.wikipedia.org/wiki/GPS_Block_IIIF

    In order to be able to command and control Block IIIF satellites, in April 2021 the U.S. Space Force awarded a $228 million contract to Raytheon Intelligence and Space called OCX Block 3F, which builds on the existing OCX Block 2 system and adds the ability to perform Launch and Checkout of Block IIIF satellites. [58] [59]

  7. Defense Satellite Communications System - Wikipedia

    en.wikipedia.org/wiki/Defense_Satellite...

    Since the first launch, DSCS has been the "workhorse" of military satellite communications. All DSCS III satellites have exceeded their 10-year design life. The National Science Foundation use the DSCS satellites to provide additional bandwidth to Amundsen–Scott South Pole Station and McMurdo Station on Ross Island on the continent of ...

  8. USA-246 - Wikipedia

    en.wikipedia.org/wiki/USA-246

    The USA-246 satellite was constructed by Lockheed Martin Space, and is based on the A2100 satellite bus. The satellite has a mass of 6,168 kg (13,598 lb) and a design life of 14 years. [ 2 ] It will be used to provide super high frequency (SHF) and extremely high frequency (EHF) communications for the United States Armed Forces , as well as ...

  9. Advanced Extremely High Frequency - Wikipedia

    en.wikipedia.org/wiki/Advanced_Extremely_High...

    Advanced Extremely High Frequency (AEHF) is a constellation of communications satellites operated by the United States Space Force.They are used to relay secure communications for the United States Armed Forces, the British Armed Forces, the Canadian Armed Forces, the Netherlands Armed Forces and the Australian Defence Force. [3]