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UHF Airborne Blade Antenna

225 to 512 MHz

SKU: 21-30-17

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UHF Airborne Blade Antenna

The 21-30-17 is a high performance UHF 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 21-30-17 to meet the lightning protection requirements of AS-3191/A.

Internal radiating element 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 or grey urethane paint. 

  • Covers extended UHF and EPLRS Bands
  • High Strength Composite Blade with Aluminum Alloy Base Block
  • Low Side Area, Low Drag
  • Single ‘N’ Type Connector
  • Meets Lightning Strike Criteria of AS-3191
  • Designed to meet Environmental Performance to MIL-STD-810 & MIL-T-5422
  • Foamed in place radiating element
21-30-17
Model # 21-30-17
Brand Cooper Antennas
Frequency 225 MHz to 512 MHz
Gain +3 dBi typical 
VSWR ≤ 2.5:1 
Impedance (nominal) 50 Ohms
Power 100 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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