Satcom C1

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General

Designation	20945 / 90100A
Launch date	20 Nov 1990
Country of origin	United States
Mission	Telecommunications
Geostationary orbit	see below
Launch vehicle	Ariane V40

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Location

Begin	End	Position
L: 20 Nov 1990	Oct 2000	137°W
Nov 2000	Apr 2001	141.5°W
Jun 2001	Jun 2002	79°W
Sep 2002	Jul 2004	37.5°W
Jul 2004	Apr 2005	37.5°W, inclined

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End of life

Out of service	late Apr 2005
Cause	Moved to the junk orbit

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External resources

sat-index articles

Technical data

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Lyngsat transponder loading

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Specifications

Prime contractor	GE Astro Space
Platform	GE-3000
Mass dry	517 kg
Mass at launch	1169 kg
Mass in orbit	682 kg
Length	1.63 m
Width	1.32 m
Height	0.99 m
Solar array	14.33 m
Stabilization	3-axis
DC power	BOL: 1390 W
Design lifetime	10 years
Beacons	telemetry: 3.7005 GHz (H), 4.1995 GHz (V) command: 6.4235 GHz (H)

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C-band

Main transponders	24
Backup transponders	4
Power	8.5 W (SSPA)
Bandwidth	36 MHz
OLD Coverage & EIRP max	Conus: 36 dBW Alaska: 34 dBW Hawaii: 32 dBW
Polarization	linear H/V

Transponder frequency chart

After its relocation over the Atlantic, the typical EIRP levels available in Europe are between 34 and 28 dBW and in the US east coast between 20 and 28 dBW.

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