Telecom 1's specifications

Prime contractor	Matra Marconi Espace
Platform	ECS
Mass at launch	1210 kg
Mass in orbit	653 kg
Payload mass	134.4 kg: transponders: 107 kg, antennas: 27.4 kg
Dimension	2.06 x 1.9 x 2.2 m
Solar array	16 m span
Stabilization	3 axis
DC power	EOL: equinox: 1483 W, solstice: 1450 W
Payload power	717.3 W
Design lifetime	7 years

Apogee kick motor: Mage 2. Telemetry is transmitted in S-band (2204.13, 2205.33, 2207.13 MHz) in backup mode and in C-band in normal mode.

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