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VHF Airborne Blade Antenna

170 to 220 MHz

SKU: 21-20-19

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VHF Airborne Blade Antenna

The 21-20-19 is a high performance VHF airborne blade antenna suitable for use on fixed and rotary wing aircraft.

Construction is from a one piece glass loaded thermoplastic moulding intimately bonded into an aluminum alloy base block which houses the matching circuits and provides for very solid attachment to the airframe via 6 fixing holes drilled to the same pattern as the AT-256 UHF antenna.

The metal base block also enables the 21-20-19 to meet the lightning protection requirements of AS-3191/A.

Internal radiating elements are shaped in such a way as to produce minimum VSWR and also to optimize radiation. The antenna assembly is sealed by close cell foam and finished in lusterless black urethane paint. 

21-20-19
Model # 21-20-19
Brand Cooper Antennas
Frequency 170 MHz to 220 MHz
Gain (typical)  +1 dBi typical 
VSWR ≤ 2.5:1 
Impedance (nominal) 50 Ohms
Power 50 Watts CW 
Polarization Vertical (when mounted vertically) 
Radiation Omni directional in azimuth plane
Antenna RF Connector  N Female
Antenna Shell Type  Glass loaded thermoplastic blade in aluminum alloy base collar 
Height 9.10 inches (231mm)
Weight 0.9 lbs (0.4kg)
Side Loading ≥ 8 psi ultimate 
Base Plate Shape Diamond shape
Fixing Holes 6 x Ø 0.203 inch (5.2mm) holes, counter bored Ø 0.43 inches (10.9mm)

Finish

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

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