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GD Satcom Model 21.0m Cassegrain Antenna

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  • Interchangeable reflector components
  • Designed for 1.5 to 8.4 GHz operation
  • Galvanized steel backup structure
  • Survives 125 mph winds


SKU: SATRES-15536

Mechanical/Environmental
Antenna Diameter 21.0 meters (69.0 feet)
Antenna Type Cassegrain design
Reflector Construction 128 precision-formed aluminum panels with heat-diffusing white paint (four-tier) Galvanized steel back-up structure
Hub Dimensions 96 in (244 cm) OD, 65 in (165 cm) depth
Mount Configuration Elevation over azimuth pedestal, constructed of galvanized steel
Drive Type Machine jack screws
Azimuth Travel 180° (3 segments @ 65°)
Elevation Travel 5 to 90° continuous
Foundation (L x W x D) 42 x 42 x 2.5 ft (12.8 x 12.8 x 0.76 m)
Concrete 165 yds³ (126 m³)
Reinforcing Steel 21,550 lbs. (9,775 kg)
Shipping Containers Two 40 ft flatrack, six 40 ft open top, two 40 ft standard
Operational Wind Loading 45 mph (72 km/h) gusting to 60 mph (97 km/h)
Survival Wind Loading 125 mph (200 km/h) @ 58° F (15° C), any position
Operational Temperature +5° to +122° F (-15° to +50° C)
Survival Temperature -22° to +140° F (-30° to +60° C), low temperature options available
Rain Up to 4 in/h (10 cm/h)
Relative Humidity 0 to 100% with condensation
Solar Radiation 360 BTU/h/ft² (1,000 Kcal/h/m²)
Ice (survival) 1 in (2.5 cm) on all surfaces or 1/2 in (1.3 cm) on all surfaces with 80 mph (130 km/h) wind gusts
Atmospheric Conditions As encountered in coastal regions and/or heavily industrialized areas
Shock and Vibration As encountered during shipment by airplane, ship or truck

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