Inmarsat-3 F4
| Operator | Inmarsat |
|---|---|
| COSPAR ID | 1997-027A |
| SATCAT no. | 24819 |
| Spacecraft properties | |
| Bus | AS-4000 |
| Manufacturer | Lockheed-Martin |
| Launch mass | 2,068 kilograms (4,559 lb) |
| Start of mission | |
| Launch date | 4 June 1997 |
| Orbital parameters | |
| Longitude | 144° West |
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 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
- ^ "PETITION FOR DECLARATORY RULING". US Federal Communications Commission. Retrieved 24 March 2018.
- ^ "REQUEST FOR SPECIAL TEMPORARY AUTHORITY". US Federal Communications Commission. Retrieved 24 March 2018.
- ^ Krebs, Gunter. "Inmarsat-3 F1, 2, 3, 4, 5". Gunter's Space Page. Retrieved 22 March 2014.
- ^ "ISAT List". US Federal Communications Commission. Retrieved 24 March 2018.