VSATplus Product Website

General Dynamics Satcom Technologies 1184-475 1.8M C-Band Tx/Rx Antenna System

1184-475 1.8M C-BAND TX/RX ANTENNA

GD Satcom is the world’s largest manufacturer of Rx/Tx VSAT antennas. We have the broadest product line in the industry including Receive Only, Rx/Tx and Rural Telephony antenna systems. GD Satcom offers nineteen antenna sizes, 47cm to 4.5M. GD Satcom is the leader in obtaining type certifications and approvals for Intelsat, AsiaSat and Eutelsat. GD Satcom antennas provide the best quality in the market due to the sophisticated, precision SMC compression molding process technology. GD Satcom provides the best value antenna solution to the market with competitive prices, the highest quality products and superb engineering support.


  • Precision Compression molded offset reflector
  • Intelsat approvals: C-Band #IA010C00
  • Non-penetrating roof mounts and king posts available
  • Interface kits for all C & Ku-Band RF heads in stock
  • Two axis tracking configuration available
  • Reflector/Feed electrical anti-icing available
  • Insat extended C-Band available
  • Polarization: Linear Cross Pol
  • Feed Interface: CPR137 Waveguide Flange
  • Mount Type: Elevation over Azimuth
  • Reflector: Prime Focus, One-Piece Offset Feed, Glass Fiber Reinforced Polyester SMC
  • Tx Operating Frequency: 5.850 – 6.425 GHz
  • Rx Operating Frequency: 3.625 – 4.2 GHza
Electrical Specifications
Antenna Size1.8M (71 in.)
Operating Frequency

3.625 – 4.2 GHz
5.850 – 6.425 GHz
Midband Gain ( ± 0.2 dB)

35.5 dBi
39.5 dBi
Antenna Noise Temp. (Circular)
  10° elevation
  20° elevation
  30° elevation
  40° elevation

30 K
23 K
21 K
20 K
Antenna Noise Temp. (Linear)
  10° elevation
  20° elevation
  30° elevation
  40° elevation

56 K
49 K
47 K
46 K
Cross-Polarization (linear)-30 dB on axis
Sidelobe Envelope, Co-Pol
  Mainbeam < θ <7°
  7° < θ < 9.2°
  9.2° < θ < 48°
  48° < θ < 180°

29-25 Log θ dBi
+8 dBi
32-25 Log θ dBi
-10 dBi (averaged)
VSWR1.3:1 Max
Axial Ratio (Circular)

Feed Interface

CPR 229 F
CPR 137 or Type N
Mechanical Specifications
Reflector MaterialGlass Fiber Reinforced Polyester SMC
Antenna OpticsPrime Focus, One-Piece Offset Feed
Mast Pipe Size3.5″ Schedule 40 Pipe (4.00″ OD) 10.16cm.
Elevation Adjustment Range5° to 90°, Continuous Fine Adjustment
Mount TypeElevation over Azimuth
Azimuth Adjustment Range±45° fine, 360° Continuous
Shipping Specifications225 lbs. (103 Kg.)
Environmental Performance
Wind LoadingOperational : 50 mph (80 km/h)
Survival: 125 mph (201 km/h)
TemperatureOperational: -40° to 140° F (-40° to 60° C)
Survival -50° to 160° F (-46° to 71° C)
Atmospheric ConditionsSalt, Pollutants and Contaminants as Encountered in Coastal and Industrial Areas

1/2″ per hour
2″ per hour
Solar Radiation360 BTU/h/ft2

General Dynamics SATCOM Technologies 1184-990 w/0800-3486 1.8M Ku-Band Datasheet

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