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Eutelsat W2 Characteristics (e. hemi. list)
Satellite Characteristics Parameter Value(s) Notes
General:     
Satellite Manufacturer Alcatel Space Industries  
Launch Date 05/10/98  
Launch  Ariane IV (V111)  
Projected Lifetime  >12 years   
Orbital Position  16º E ± 0.1º  
Frequency Plan:    
Operational Transponders 24  
Total Transponders  34   
Frequency Accuracy ±5 x 10 -7 At satellite delivery.
Frequency Stability ±1 x 10 -7
±5 x 10 -7
±5 x 10 -6
Over any 24 hour period.
Over any month.
Over the min. operational lifetime.
Coverages:    
Nominal Transponder Power 98 W Wide Beam and Steerable Spot Beam  
Polarisation  Dual Linear   All coverages.
Polarisation Discrimination 30 dB - 33 dB .
30 dB - 34 dB
30 dB
(transmit and receive). 
Wide Beam receive.
Wide Beam transmit.
Steerable Spotbeam.
Transponder Gain:     
Fixed Gain Mode: Precise operational gain adjustments are made according to the traffic configuration of the transponder.   
Gain Adjustment Range 15 dB  
Gain Step Size 1 dB  
IPFD for Saturation -(92 + X) to -(77 + X)  In dBWm-2. The value X is the G/T in dBK -1 in the direction of the location considered.
IBO Adjustment Range 0 - 10 dB   
IBO Adjustment Step Size 1 dB  
Beacon:     
Number 3 Beacon 1 is the telemetry and
ranging carrier.
Beacon 1 Frequencies 11 698.000 MHz
11 699.200 MHz
Nominally active beacon frequency.
Selectable by ground command.
Beacon 2 frequency 12 501.000 MHz   
Beacon 3 frequency  11 199.000 MHz   
Frequency Stability  < ±50 kHz With respect to the nominal frequency.
Minimum EIRP  9 dBW All beacons. (Anywhere within the Widebeam coverage area for Beacons 1 and 2 and within any geographical
area served by the Steerable Spotbeam for Beacon 3.)
Polarisation  Horizontal