SBS 6

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General

Designation	20872 / 90091A
Launch date	12 Oct 1990
Country of origin	United States
Mission	Telecommunications
Geostationary orbit	see below
Launch vehicle	Ariane V39

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Location

Begin	End	Position
L: 12 Oct 1990		77°W
< May 1992	May 1992 >	99°W
< Oct 1993	15 Oct 1995	95°W
Nov 1995	Jan 2008	74°W
Feb 2008	Feb 2009	80.9°W, to serve Argentina

Was replaced by Galaxy 17 in Jul 2007.

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End of life

Out of service	Feb 2009
Cause	Moved to the junk orbit

sat-index articles

Technical data

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Lyngsat transponder loading

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EIRP coverage at 74°W (dBW)

Horizontal
Vertical

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Specifications

Prime contractor	Hughes
Platform	HS-393
Mass at launch	2478 kg
Mass in orbit	1500 kg
Diameter	3.66 m
Height	3.4 m (10 m deployed)
Stabilization	Spin stabilized (55 rpm)
DC power	BOL: 2300 W
Design lifetime	10 years

Telemetry: 12.190-12.200 GHz H in PCM/FM and 14.495-14.500 GHz V in FM

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Ku-band

Main transponders	19
Backup transponders	11
Power	41 W (TWTA)
Bandwidth	43 MHz
Coverage	CONUS, Alaska, Hawaii
EIRP max	50 dBW
Polarization	linear H/V

Antenna: 2.4 m

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Transponder frequency chart (GHz)

Horizontal Uplink	Horizontal Downlink	Transponder	Vertical Downlink	Vertical Uplink
	11.7250	1		14.0250
14.0495		2	11.7495
	11.7740	3		14.0740
14.0985		4	11.7985
	11.8230	5		14.1230
14.1475		6	11.8475
	11.8720	7		14.1720
14.1965		8	11.8965
	11.9210	9		14.2210
14.2455		10	11.9455
	11.9700	11		14.2700
14.2945		12	11.9945
	12.0190	13		14.3190
14.3435		14	12.0435
	12.0680	15		14.3680
14.3925		16	12.0925
	12.1170	17		14.4170
14.4415		18	12.1415
	12.1660	19		14.4660

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