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UHF Satcom Antenna

225 to 400 MHz

SKU: 20-30-70

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UHF Satcom Antenna

The 20-30-70 is a low profile UHF Satcom antenna that provides hemispherical coverage without the need to switch from high to low angle elements. The design comprises a pair of specially shaped crossed folded dipoles connected such as to generate Right Hand Circular polarization.

For interchangeability reasons, an external 50 ohm load is required to terminate the in built hybrid coupler. Radome construction is from high strength epoxyfibreglass and the antenna is sealed and foamed for long term protection against 

  • Suitable for land, shipborne and airborne application.
  • Hemispherical Coverage.
  • Low profile.
  • Rugged yet lightweight.
  • Designed to MIL-STD-810 Environmental conditions.
  • Element DC grounded for P-static protection.
  • Direct Replacement for AS-3439/G.
20-30-70
Model # 20-30-70
Brand Cooper Antennas
Frequency 225 - 400 MHz 
Gain (typical)  2-4 dBiC typical
VSWR ≤ 1.5:1 
Impedance (nominal) 50 Ohms
Power 200 Watts CW  
Polarization Right Hand Circular
Antenna RF Connector 

Input N Female

Load TNC Female

Height 6.25 inches (159mm) max 
Radome Diameter  21.5 inches (546mm) 
Base plate diameter  30 inches (762mm) 
Weight  13 lbs (5.9 kg) 
Fixing Holes 24 holes x Ø 0.312 inches (7.92mm) 

Finish

  • Urethane olive drab
  • Other finish options are available.
  • Please specify finish required when ordering.
Datasheet:

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