Eutelsat W3

Also called Eutelsat 3F3 and renamed Eutelsat W6 in Nov 2004
Renamed Eutelsat 21A in 2012, then Eutelsat 48C

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General

Designation	25673 / 99018A
Launch date	12 Apr 1999
Country of origin	Europe
Mission	Telecommunications
Geostationary orbit	see below
Launch vehicle	Atlas 2AS #120

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Location

Begin	End	Position
L: 12 Apr 1999	May 1999	2°E
May 1999	Jun 2004	7°E
Sep 2004	Oct 2004	48°E
Nov 2004	Dec 2012	21.5°E, Eutelsat 21A
Jan 2013	Oct 2014	48°E, inclined, Eutelsat 48C

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End of life

Out of service	Oct 2014
Cause	Moved to junk orbit

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External resources

sat-index articles

Technical data

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Lyngsat transponder loading

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EIRP coverage (dBW)

fixed
spot

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G/T coverage (dB/K)

fixed
spot

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Specifications

Prime contractor	Aerospatiale (with DASA, Alenia & SS/L)
Platform	Spacebus-3000B2
Mass at launch	3183 kg
Mass in orbit	1810 kg
Dry mass	1375 kg
Dimension	4.6 x 2.5 x 1.8 m
Solar array	29 m span
Stabilization	3-axis
DC power	EOL: 5900 W
Design lifetime	12 years

The Ku-band telemetry is defective.
Beacons: 11.698900 or 11.699200 + 12.501 + 11.199 GHz + S-band: 2270.2 MHz

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Ku-band

Main transponders	34 (max 24 active at one time)
Backup transponders
Power	90 W
Bandwidth	21 x 36 MHz (9 switchable to steerable beam) 13 x 72 MHz (1 switchable to steerable beam)
Coverage	One fixed beam to cover the entire European continent and the Mediterranean Bassin One steerable beam to Turkey (Aegan)
EIRP max	fixed: 47 dBW steerable: 52 dBW
Polarization	linear
Frequencies	uplink: 13.0-13.25 GHz & 13.75-14.5 GHz downlink: 10.95-11.7 GHz & 12.5-12.75 GHz
Beacon	11.1995 GHz H

Dxx transponders can be switched to steerable beam

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Transponder frequency chart (GHz)

Horizontal Uplink	Horizontal Downlink	Transponder	Vertical Downlink	Vertical Uplink	Bandwidth (MHz)	Switchable to
	10.99167	B1		14.29167	72
14.29167		B2	10.99167		72
	11.07500	B3		14.37500	72
14.37500		B4	11.07500		72
	11.15833	B5		14.45833	72
14.45833		B6	11.15833		72
13.02175		C1	11.22075		36
	11.24150	C2		13.02174	36
13.06325		C3	11.26225		36
	11.28300	C4		13.06325	36
13.10475		C5	11.30375		36
	11.32450	C6		13.10475	36
13.14625		C7	11.34525		36
	11.36600	C8		13.14525	36
13.18775		C9	11.38675		36
	11.40750	C10		13.18775	36
13.22925		C11	11.42825		36
	11.44900	C12		19.22925	36
13.77141		D1	11.47141		36	Steerable
	11.49216	D2		13.79216	36	Steerable
13.81291		D3	11.51291		36	Steerable
	11.53366	D4		13.83366	36	Steerable
13.85441		D5	11.55441		36	Steerable
	11.57516	D6		13.87516	36	Steerable
13.89591		D7	11.59591		36	Steerable
	11.61666	D8		13.91666	36	Steerable
13.95833		D9	11.65833		72	Steerable
	11.65816	D10		13.95816	36	Steerable
	12.54267	F1		14.04167	72
14.04167		F2	12.54267		72
	12.62500	F3		14.12500	72
14.12500		F4	12.62500		72
	12.70833	F5		14.20833	72
14.20833		F6	12.70833		72

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