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Broadband Airborne Blade Antenna

30 to 600 MHz

SKU: 21-50-51

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Broadband Airborne Blade Antenna

The 21-50-51 is a vertically polarized, omni-directional antenna, compatible with all popular airborne radios operating within the 30 to 600 MHz frequency range. These antennas can handle 30 Watts of power and require no external tuning.

This wideband, multi-function antenna developed by Cooper Antennas Ltd is particularly suited to tactical military communications. Rugged design ensures reliability in world wide conditions of service on aircraft operating at speeds up to Mach 1.0.

Addition of encapsulated top loading element optimizes efficiency. The element is DC grounded for high voltage transfer protection. 

  • High Strength Broadband Blade Antenna
  • Frequency Selective Matching Network
  • Fully Foamed to Provide High Environmental Integrity
  • Aluminum Alloy Retaining Collar Accepts High Side Loading
  • Drop-on Replacement for AT-1108 & AS3191
  • Suitable for AN/ARC-210, 5400N and Similar Multi-Mode Radios
  • Complies with MIL-STD-810/DO160D Lightning Protection
21-50-51
Model # 21-50-51
Brand Cooper Antennas
Frequency

30 - 88 MHz

108 - 174 MHz

225 - 600 MHz 

Gain

30 MHz ≥ -24.0 dBi

60 MHz ≥ -18.0 dBi

88 MHz ≥ -11.0 dBi

118 MHz ≥ -7.0 dBi

156 MHz ≥ -2.0 dBi

174 MHz ≥ -1.0 dBi

225-600 MHz ≥ 0 dBi average

VSWR

≤ 2.5:1 30 - 88 MHz

≤ 3.0:1 108 - 117 MHz

≤ 2.5:1 118 - 174 MHz

≤ 2.5:1 225 - 400 MHz

≤ 2.75:1 401 - 600 MHz 

Impedance (nominal) 50 Ohms
Power 30 Watts CW
Polarization Essentially vertical (when mounted vertically) 
Antenna RF Connector N Female
Antenna Shell Type High density foam filled epoxy/fiber glass shell set in aluminum alloy base collar 
Height 14 inches (356mm) 
Weight 4.5 lbs (2.05 kg)
Side Loading  ≥ 8 psi ultimate 
Base Plate Shape Tear drop
Fixing Holes 6 x Ø 0.200 inches (5mm) holes, counter bore Ø 0.39 inches (9.9mm) 

Finish

  • Urethane Lusterless Grey
  • Other finish options are available.
  • Please specify finish required when ordering.
Datasheet:

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