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Hotbird 4


Also called Nilesat 103 or Atlantic Bird 4 or Eurobird 16A or Eutelsat 16B

General


Designation 25237 / 98013A
Launch date 27 Feb 1998
Country of origin Europe
Mission Telecommunications
Geostationary orbit see below
Launch vehicle Ariane V106

cost: $280 million

Location


Begin End Position
L: 27 Feb 1998 Mar 1998 29°E
Mar 1998 May 2006 13°E
Jun 2006 Apr 2009 7.2°W (Nilesat 103)
May 2009 Dec 2011 15.8°E
Dec 2011 Feb 2015 15.8°E, inclined

After the launch of Hotbird 7A and Hotbird 8, this satellite moved to 7°E and leased to Nilesat. Later after the Eutelsat W2M failure, it was moved to 16°E in order to wait for Eutelsat W3B.


End of life


Out of service Feb 2015
Cause Sent to junk orbit


sat-index articles


Technical data


EIRP coverage (dBW)

Specifications


Prime contractor Matra Marconi Space
Platform Eurostar-2000+
Mass at launch 2885 kg
Mass in orbit 1770 kg
Dry mass 1310 kg
Dimension  
Solar array  
Stabilization 3-axis
DC power 6000 W
Design lifetime 12 - 15 years

Beacon: 11.704600 GHz

Ku-band


Main transponders 28
Backup transponders  
Power 135 W (TWTA)
Bandwidth 25 transponders of 33 MHz
1 transponder of 46.5 MHz
2 transponders of 36 MHz
Coverage Fixed
EIRP max  
Polarization linear H/V
Frequencies Downlink: 10.7-10.95 GHz, 12.6-12.75 GHz

Has 3 main antennas and a 50 cm mobile spot.

Will have a Skyplex device onboard (DVB compatible). This module is developped by Alenia Aerospazio. It has a digital processor to enable on board multiplexing of DVB signals; this let several channels to be uplinked from differents places although downlinked in the same multiplex. Such a module will be used by the Euroskyway program. The system can combine 6 uplinks of 6 mbps each into a 36 mbps downlink stream.

Transponder frequency chart (GHz)


Horizontal
Uplink
Horizontal
Downlink
Transponder Vertical
Downlink
Vertical
Uplink
Bandwidth (MHz) Remarks
18.11918   110 10.71918   33 Skyplex
  10.72713 111   18.12713 46.5 Steerable
18.15754   112 10.75754   33 Steerable
  10.77508 113   18.17508 36 Steerable
18.19590   114 10.79590   33 Steerable
  10.81508 115   18.21508 33 Steerable
18.23426   116 10.83426   33 Steerable
  10.85344 117   18.25344 33 Steerable
18.27262   118 10.87262   33 Steerable
  10.89180 119   18.29180 33  
18.31098   120 10.91098   33  
  10.93016 121   18.33016 33  
18.34934   122 10.94934   33  
             
17.82616   76 12.22616   33  
17.86452   78 12.26452   33  
  12.28370 79   17.88370 33  
17.90288   80 13.20388   33  
  12.32206 81   17.92206 33  
17.94224   82 12.34124   33  
  12.36042 83   17.96042 33  
  12.39878 85   17.99878 33  
             
  12.61574 95   13.86574 33  
13.88492   96 12.63492   33  
  12.65410 97   13.90410 33  
13.92328   98 12.67328   33  
  12.69246 99   13.94246 33  
13.96328   100 12.71328   36  
  12.73082 101   13.98082 33  


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