Arabsat 4AR

Also called Badr 6

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General

Designation	33154 / 08034B
Launch date	7 Jul 2008
Country of origin	Arab States
Mission	Telecommunications
Geostationary orbit	26°E
Launch vehicle	Ariane V184

In-orbit delivery. Tested at 20°E Started service in Aug 2008. Went inclined in Aug 2023.

sat-index articles

Technical data

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Lyngsat transponder loading

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EIRP coverage (dBW)

C-band
Ku-band

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Specifications

Prime contractor	Astrium
Platform	Eurostar 2000+
Mass at launch	3346 kg
Mass in orbit	1510 kg
Dimension	2.9 x 1.75 x 2.5 m
Solar array	32 m span
Stabilization	3-axis
DC power	EOL: 6 kW BOL: 5.7 kW
Design lifetime	15 years

Has two 2.5 m deployable antennas and one 1.3 m fixed antenna
Communication playload from Alenia Alcatel Space.

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C-band

Main transponders	24
Backup transponders	6
Power	4 high power: 80 W 20 medium power: 40 W
Bandwidth	36 MHz
Coverage	Middle East, major parts of Africa, West Asia, and neighbouring Western European countries
EIRP max	medium: 38 dBW high: 41 dBW
G/T max	-2 dB/K
Polarization	circular RH/LP cross-pol
Frequencies	uplink: 5.925-6.425 GHz downlink: 3.7-4.2 GHz

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Transponder frequency chart (GHz)

RHCP Uplink	RHCP Downlink	Channel	LHCP Downlink	LHCP Uplink
	3.720	1		5.945
5.965		2	3.740
	3.760	3		5.985
6.005		4	3.780
	3.800	5		6.025
6.045		6	3.820
	3.840	7		6.065
6.085		8	3.860
	3.880	9		6.105
6.125		10	3.900
	3.920	11		6.145
6.165		12	3.940
	3.960	13		6.185
6.205		14	3.980
	4.000	15		6.225
6.245		16	4.020
	4.040	17		6.265
6.285		18	4.060
	4.080	19		6.305
6.325		20	4.100
	4.120	21		6.345
6.365		22	4.140
	4.160	23		6.385
6.405		24	4.180

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Ku-band

Main transponders	20 (16 at EOL)
Backup transponders
Power
Bandwidth	34 MHz or 4 x 187 MHz (wideband)
Coverage	Middle East, North Africa
EIRP max	50 dBW
G/T max	0.2 dB/K
Polarization	linear H/V cross-pol
Frequencies	uplink: 17.3-18.1 GHz downlink: 11.7-12.5 GHz

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Transponder Frequency chart (GHz)

Horizontal Uplink	Horizontal Downlink	Channel	Vertical Downlink	Vertical Uplink
	11.72748	1		17.32748
17.34666		2	11.74666
	11.76584	3		17.36584
17.38502		4	11.78502
	11.80420	5		17.40420
17.42338		6	11.82338
	11.84256	7		17.44256
17.46174		8	11.86174
	11.88092	9		17.48092
17.50010		10	11.90010
	11.99600	WB15		17.59600
17.61518		WB16	12.01518
	12.18780	WB25		17.78780
17.80698		WB26	12.20698
	12.20388	31		17.90288
17.92206		32	12.32206
	12.34124	33		17.94124
17.96042		34	12.36042
	12.37960	35		17.97960
17.99878		36	12.39878
	12.41796	37		18.01796
18.03714		38	12.43714
	12.456.32	39		18.05632
18.07250		40	12.47550

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