GS4 Specifications

Orbital Location: 105° West Longitude

Coverage: CONUS

16 Transponders @ 54 MHz

RF Power: 14 @ 20 watts, 2 @ 27 watts
Variable uplink sensitivity
Amp Type: Traveling Wave Tube
Amp Redundancy: 11-for-8
Receiver Redundancy: 4-for-2

Beacon Info: 11702 V, 12198 H

Launch Date: November 20, 1990
Launch Mass: 1210 kg (2667 lbs)
Launch Vehicle: Ariane 42P
Length: 46 feet (arrays deployed)
Expected Lifetime: over 12 years

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