Télécom 1A [CNES]
The first Telecom spacecraft, Telecom 1A, was launched by an Ariane booster on 4 August 1984. Operated by France Telecom under government sponsorship, Telecom satellites service both civilian and military users through twelve active and five reserve transponders operating at 6/4 GHz (four transponders), 14/12 GHz (six transponders), and 8/7 GHz (two X-band transponders). The last units provide the Syracuse (Systeme de Radio Communications Utilisant un Satellite) secure military channels for the French Ministry of Defense.
Telecom 1 satellites were designed and manufactured by Matra with the communications package supplied by Alcatel Espace. At the start of its 7-year design life, each Telecom 1 had a mass of approximately 700 kg and an initial electrical power capacity of 1.2 kW, supplied by two narrow solar arrays with a total span of 16 m. The spacecraft bus was derived from the earlier ECS program in which Matra was a subcontractor to British Aerospace. A total of three Telecom 1 satellites were launched (1984, 1985, 1988). Only Telecom 1C remained operational at the end of 1994 and was stationed at 3 degrees E after being moved from 5 degrees W in the Fall of 1992.
|Type / Application:||Communication|
|Equipment:||6 (+3) Ku-band transponder, 4 (+2) C-band transponder, 2 X-band transponder|
|Power:||2 deployable solar arrays, batteries|
|Télécom 1A||1984-081B||04.08.1984||Ko ELA-1||Ariane-3||with ECS 2|
|Télécom 1B||1985-035B||08.05.1985||Ko ELA-1||Ariane-3||with GStar 1|
|Télécom 1C||1988-018B||11.03.1988||Ko ELA-1||Ariane-3||with Spacenet 3R|