GE 4

Also called AMC 4, S2135

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General

Designation	25954 / 99060A
Launch date	13 Nov 1999
Country of origin	United States
Mission	Telecommunications
Geostationary orbit	see below
Launch vehicle	Ariane V123

Tested from 72°W. Became operational on 3 Jan 2000, replaced ASC 2. Was originally planned to be launched by Proton

Suffers some power loss on solar array circuits which have reduced capacity. License to be extended till 31 Jan 2026.

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Location

Begin	End	Position
L: 13 Nov 1999	Dec 1999	72°E
Jan 2000	Jul 2010	101°W
Aug 2010	Jun 2017	67°W
Jul 2017	Jul 2017	85°W
Aug 2017		134.9°W
Dec 2020	Feb 2023	134.9°W inclined

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End of life

Out of service	Feb 2023
Cause	Junk orbit

sat-index articles

Technical data

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Lyngsat transponder loading

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EIRP coverage (dBW)

C-band
Ku-band

C-band G/T coverage (dB/K)

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Specifications

Prime contractor	Lockheed Martin Astro Space
Platform	A2100AX
Mass at launch	3895 kg
Dry mass	1751 kg
Dimension	1.83 x 1.85 x 2.64 m
Solar array	26.8 m span
Stabilization	3-axis
DC power	BOL: 6000 W
Design lifetime	15 years

TT&C on 6423.5 MHz

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C-band

Main transponders	24
Backup transponders	8
Power	20 W
Bandwidth	36 MHz
Coverage	Conus, Canada, Mexico, Caribbean
EIRP max	40 dBW
G/T max
Polarization	linear H/V
Beacons	3.7005 GHz H & 4.1995 GHZ V

C-band transponder frequency chart

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Ku-band

Main transponders	28
Backup transponders	8
Power	110 W (TWTA)
Bandwidth	24 x 36 MHz 4 x 72 MHz
Coverage	US, Hawaii, Canada, Mexico Central-South America
EIRP max	51 dBW
G/T max
Polarization	linear H/V
Beacons	11.702 GHZ V & 12.198 GHz H

Ku-band transponders are individually switchable between North American and South American coverage

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Ku-band Transponder frequency chart (GHz)

Horizontal Uplink	Horizontal Downlink	Transponder	Vertical Downlink	Vertical Uplink	Notes
13.875		25	11.575		54 MHz
	11.575	26		13.875	54 MHz
13.955		27	11.655		54 MHz
	11.655	28		13.955	54 MHz
14.020		1	11.720
	11.740	2		14.040
14.060		3	11.760
	11.780	4		14.080
14.100		5	11.800
	11.820	6		14.120
14.140		7	11.840
	11.860	8		14.160
14.180		9	11.880
	11.900	10		14.200
14.220		11	11.920
	11.940	12		14.240
14.260		13	11.960
	11.980	14		14.280
14.300		15	12.000
	12020	16		14.320
14.340		17	12.040
	12060	18		14.360
14.380		19	12.080
	12100	20		14.400
14.420		21	12.120
	12.140	22		14.440
14.460		23	12.160
	12.180	24		14.480

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