Inmarsat-3_F4

Inmarsat-3 F4

Inmarsat-3 F4

Communications satellite

Inmarsat-3 F4 is a communications satellite operated by the British satellite operator Inmarsat. It was launched into a geosynchronous orbit on 4 June 1997. It was located at 54° West longitude whilst in service, providing coverage of the Americas as Atlantic Ocean Region-West (AOR-W). It was replaced by Inmarsat-3 F5 at 54° West in February 2016, and the now retired Inmarsat-3 F4 was moved to parking at 144° West.[1][2]

Quick Facts Mission type, Operator ...

Inmarsat-3 F4 was constructed by Lockheed-Martin, using an AS-4000 satellite bus. It has a mass of 2,068 kg (4,559 lb), and is expected to operate for 13 years.[3]

In the United States, Inmarsat ground stations are licensed to operate at 1525-1559 MHz and 1626.5-1660.5 MHz via a mechanism called the ISAT List. The 1544-1545 MHz and 1645.5-1646.5 MHz bands are reserved for safety and distress communications.[4]

See also

References

  1. [1]
    "PETITION FOR DECLARATORY RULING". Federal Communications Commission. Retrieved 24 March 2018. Public Domain This article incorporates text from this source, which is in the public domain.
  2. [2]
    "REQUEST FOR SPECIAL TEMPORARY AUTHORITY". Federal Communications Commission. Retrieved 24 March 2018. Public Domain This article incorporates text from this source, which is in the public domain.
  3. [3]
    Krebs, Gunter (11 December 2017). "Inmarsat-3 F1, 2, 3, 4, 5". Gunter's Space Page. Retrieved 10 October 2021.
  4. [4]
    "ISAT List". Federal Communications Commission. Retrieved 24 March 2018. Public Domain This article incorporates text from this source, which is in the public domain.
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