VHF/UHF Airborne Blade Antenna

30 to 512 MHz

SKU: 21-50-08

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VHF/UHF Airborne Blade Antenna

The 21-50-08 is a passive airborne blade antenna requiring no tuning and providing exceptional gain in a 9 inch tall structure having just 9 inches of top loading.

Use of optimised proprietary matching techniques has produced an antenna design that provides full SINCGARS/BOWMAN and VHF/UHF communications frequency coverage whilst accepting input power up to 50 watts.

The exceptional performance provided by this antenna offers the VHF\UHF system designer a viable alternative to equivalent sized tuneable antennas with consequent increase in reliability, simpler installation and substantial cost savings.

Electrical design comprises a three dimensional top loaded discone fed via a multiplicity of passive tuned circuits that optimise gain over the various bands within a VSWR typically better than 2.5:1. 

21-50-08
Model # 21-50-08
Brand Cooper Antennas
Frequency 30 - 512 MHz 
Gain (typical)

30 MHz ≥ -23 dBi

88 MHz ≥ -12 dBi

116 MHz ≥ -3 dBi

137 MHz ≥ +1 dBi

152 MHz ≥ -3 dBi

174 MHz ≥ -3.5 dBi

225 MHz ≥ +1 dBi

300 MHz ≥ +3 dBi

400 MHz ≥ +3 dBi

407 MHz ≥ +3 dBi

512 MHz ≥ 0 dBi 

VSWR ≤2.5:1 (30-174/225-512 MHz)
Impedance (nominal) 50 Ohms
Power 50 Watts CW 
Polarization Vertical (nominal) 
Radiation Pattern

Azimuth : Omni-directional nominal

Elevation : See graph 

Antenna RF Connector TNC Female
Antenna Shell Type  High density foam filled epoxy/ fibre glass shell set in aluminium alloy base collar 
Height 9 inches (229mm) 
Weight 4 lbs (1.8kg) max
Base Plate Shape Tear drop 
Fixing Holes  6 x Ø 0.234 inch (5.9mm) holes, counter bored Ø 0.39 inches (9.9mm) 

Finish

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

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