Inmarsat-3 F4

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 AOR-W. It was replaced by Inmarsat-3 F5 at 54° West in Feb 2016, and the now retired Inmarsat-3 F4 was moved to parking at 144° West. [1] [2]

Inmarsat-3 F4
OperatorInmarsat
COSPAR ID1997-027A
SATCAT no.24819
Spacecraft properties
BusAS-4000
ManufacturerLockheed-Martin
Launch mass2,068 kilograms (4,559 lb)
Start of mission
Launch date4 June 1997 (1997-06-04)
Orbital parameters
Longitude144° West
 

Inmarsat-3 F4 was constructed by Lockheed-Martin, using an AS-4000 bus. It has a mass of 2,068 kilograms, 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. "PETITION FOR DECLARATORY RULING". US Federal Communications Commission. Retrieved 24 March 2018.
  2. "REQUEST FOR SPECIAL TEMPORARY AUTHORITY". US Federal Communications Commission. Retrieved 24 March 2018.
  3. Krebs, Gunter. "Inmarsat-3 F1, 2, 3, 4, 5". Gunter's Space Page. Retrieved 22 March 2014.
  4. "ISAT List". US Federal Communications Commission. Retrieved 24 March 2018.
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