Model 7.3m Cassegrain Antenna

GD Satcom

Model 7.3m Cassegrain Antenna

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  • L, S, C, X, Ku and DBS-band feeds
  • C/Ku receive only feed systems
  • Specialized feed systems (e.g. extended, multi-band)
  • Antenna control system with tracking
  • Reflector and feed deicing systems
  • Environmental hub configurations

  • Description
  • Technical Specifications
  • Support Documents

Overview

The General Dynamics SATCOM Technologies 7.3-meter antenna delivers exceptional performance for transmit/ receive and receive only applications for L through DBSband frequencies. This antenna offers a reflector design that incorporates precision-formed panels, contoured radials and a machined hub assembly. It features an innovative Cassegrain feed and subreflector design which results in high gain, low noise temperature, high antenna efficiency and excellent rejection of noise and microwave interference. A large center hub provides spacious accommodation for equipment mounting. The reflector is supported by a galvanized kingpost pedestal that provides the required stiffness for pointing and tracking accuracy. The pedestals are designed for full orbital arc coverage and are readily adaptable to ground or rooftop installations. The electrical performance is compliant with FCC and ITU-RS-580 sidelobe specifications and Intelsat (F3, E3) and Eutelsat (L, S1) requirements. All configurations meet SATCOM Technologies’ own type-approved quality assurance and performance guarantee.

Details

  • L, S, C, X, Ku and DBS-band feeds
  • C/Ku receive only feed systems
  • Specialized feed systems (e.g. extended, multi-band)
  • Antenna control system with tracking
  • Reflector and feed deicing systems
  • Environmental hub configurations
  • Integrated transmit cross axis kits
  • Integrated LNA or LNB systems
  • HPAs, converters and M&C systems
  • Load frame mounts
  • Packing for sea and air transport
  • Turnkey installation and testing

Mechanical/Environmental (4)
Antenna Diameter 7.3 meters (24 feet)
Antenna Type Cassegrain design
Reflector Construction 20 precision-formed aluminum panels with heat-diffusing white paint
Cleaned and brightened aluminum back-up structure
Hub Dimensions 60 in (152 cm) OD, 36 in (91 cm) depth
Mount Configuration Elevation over azimuth pedestal, constructed of galvanized A36 steel
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
(1) All values are at rear feed flange. (2) C-band Rx values are at 4 GHz. (3) Typical G/T at 20° elevation with clear horizon using single bolt-on LNA to feed.
(4) Some specifications may vary based on the combination of equipment, options and/or upgrades ordered.
(View our PDF Datasheet for more information)

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