UHF Blade Phase Matched Antenna

225 to 407 MHz

SKU: 21-30-19PM

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UHF Blade Phase Matched Antenna

The 21-30-19PM is a high performance UHF airborne blade antenna suitable for use on fixed and rotary wing aircraft.

Construction is from a one piece fiberglass blade molding 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 21-30-19PM 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 closed cell foam and finished in lusterless black or grey urethane paint. 

  • High Strength Composite Blade with Aluminum Alloy Base Block
  • Low Side Area, Low Drag
  • Single ‘N’ Type Connector
  • Drop-in replacement for AS-3984/ARC NSN 5985-01-285-9817
  • Meets Lightning Strike Criteria of AS-3191
  • Environmental Performance to MIL-STD-810
  • Foamed in place radiating element.
  • Phase matched to 1 degree
  • Sold as pairs 
21-30-19PM
Model # 21-30-19PM
Brand Cooper Antennas
Frequency 225 to 407 MHz 
Gain +3 dBi 
VSWR ≤ 2.5:1 max
Impedance (nominal) 50 Ohms
Power 100 Watts CW
Polarization Vertical
Radiation Nominally omni directional in azimuth plane
Antenna RF Connector  N Female
Antenna Shell Type Epoxy/fiberglass blade in aluminum alloy base collar 
Height 9 inches (229mm)
Weight 0.9 lbs (0.4kg) each 
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) 
Number of Antennas 2 phase matched antennas in a box 

Finish

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

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