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Arabsat 4AR


Also called Badr 6

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.

sat-index articles



Technical data


Lyngsat transponder loading



EIRP coverage (dBW)


C-band
Ku-band

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.

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


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  


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


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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