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DBS 4S


Later renamed Directv 4, also called DTV 4S

General


Designation 26985 / 01052A
Launch date 27 Nov 2001
Country of origin United States
Mission Direct TV
Geostationary orbit 101.2°W
Launch vehicle Ariane V146

The satellite was declared fully functional by Boeing on 21 Dec 2001. Started operating on 27 Dec 2001.

External resources


sat-index articles


Technical data


Lyngsat transponder loading



Specifications


Prime contractor Hughes
Platform HS-601HP
Mass at launch 4260 kg
Dry mass 2100 kg
Dimension 2.7 x 3.6 x 4.0 m
Solar array triple junction gallium arsenide, 26.2 m span
Stabilization 3-axis
DC power EOL: 8.1 kW
Design lifetime 15 years

XIPS propulsion

Ku-band National (12.2-12.7 GHz)


Main transponders
Backup transponders  
Power 2 x 100 W
6 x low power
Bandwidth  
Coverage Conus, Alaska, Hawaii
EIRP max 55 dBW
G/T max  
Polarization  


Ku-band Spots (12.2-12.7 GHz)


Main transponders 38
Backup transponders  
Power from 30 to 88 W
Bandwidth  
Coverage Multiple spot beams over Conus, Alaska and Hawaii
EIRP max 55 dBW
G/T max  
Polarization LHCP & RHCP

Ku-band DBS US frequency chart

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