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Aviation History
1985
1985 - 0110.PDF
INTERNATIONAL SATELLITE DIRECTORY Telecom 1 continued Payload 6 14/12GHz transponders (France) 4 6/4GHz transponders (overseas) 2 7/8GHz transponders (military) Owner French Ministry of Tele communications (PTT)/CNES Manufacturer Matra Orbit Geostationary Launch/location Telecom 1A Aug 1984 Ariane/8°W IB Aug 1985 Ariane/5°W (1C possible 1986 Ariane launch—spare) Stabilisation 3-axis Power (end of life) 1 • lkW Weight (at launch) 1,170kg Remarks Bus derived from ECS, and built with European participation. Military satellite communications system is called Syracuse. Tele-X Tele-X is the first export application for the Eurosatellite TDF/TV-Sat direct tele vision broadcast satellite. The programme is shared 82:15:3 between Sweden, Norway, and Finland. Tele-X will also provide video and data relay services. Aerospatiale is prime contractor, with Saab-Scania, and Ericsson is responsible for the payload. The single satellite on order will provide a semi-operational capability. Payload 3 17/12GHz transponders (DBS) 2 14/12GHz transponders Owner Swedish Space Corporation Manufacturer Eurosatellite Orbit Geostationary Launch/location Tele-X Feb 1987 Ariane/5°E Stabilisation 3-axis Power (end of life) 3 • 2kW Weight (at launch) 2,130kg Design life 7 years Cost SKr650m (1982) Remarks Bus derived from TDF/TV-Sat. Telstar 3 American Telephone and Telegraph (ATAT) is establishing its own network of Telstar 3 domestic communications satellites, having previously leased capac ity on Comsat's Comstars. The oper ational network will comprise three satellites, with a fourth planned for launch in 1988. Payload 24 6/4GHz transponders Owner American Telephone and Tele graph Manufacturer Hughes Aircraft Orbit Geostationary Launch/location Telstar 3A Jul 1983 Delta/96°W 3B Aug 1984 Shuttle/86°W 3C May 1985 Shuttle/76°W (3D Jul 1988 Shuttle reserva tion) Stabilisation 3-axis Power (start of life) 0-9kW Weight (in orbit) 650kg Design life 10 years Cost $137m (1980)—3 craft plus ground Matra prepares France's first domestic communications satellite, Telecom I A, for launch by Ariane in August 1984 control Remarks HS376 bus. Of the 30 trans ponders (24 active and six backup), 18 use solid-state power amplifiers. TV-Sat TV-Sat is Germany's version of the Franco-German direct television broad cast satellite being developed by the Euro- satellite consortium of Aerospatiale, MBB, Thomson-CSF, and AEG- Telefunken. TV-Sat 1, with three chan nels, will provide a pre-operational capa bility. Long-lead items for a five-channel TV-Sat 2 have been ordered. Payload 3 18/12GHz transponders Owner Deutsche Bundespost Manufacturer Eurosatellite Orbit Geostationary Launch/location TV-Sat 1 Apr or May 1986 Ariane/19°W (2 Ariane launch reservation in 1987) Stabilisation 3-axis Power (end of life) 3kW Weight (at launch) c2,000kg Design life 7 years Cost DM520m (1982)—TV-Sat and TDF1 Remarks TV-Sat 2 will have five active 38 DBS transponders to provide an opera tional system alongside TV-Sat 1. Westar With the launch of Westar I and II in 1974, Western Union became the first US company to place domestic commu nications satellites in orbit. The Westar network is 20 per cent owned by American Satellite. Payload 24 6/4GHz transponders Owner Western Union Manufacturer Hughes Aircraft Orbit Geostationary Launch/location/status Westar I April 1974 Delta retired Apr 1983 II Oct 1974 Delta/79°W III Aug 1979 Delta/91 °W IV Feb 1982 Delta/99 7 replaced I V Jun 1982 Delta/123°W/ replaced II VI Feb 1984 Shuttle/incor rectly orbited VI-S Dec 1985 Shuttle/replace- _- ment for VI ' Stabilisation Spin Power (end of life) 0-7kW Weight (in orbit) 585kg FLIGHT International, 12 January 1985
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