UHF Communications Antenna

443-450 MHz

SKU: 21-30-71

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UHF Communications Antenna

The 21-30-71 is a lightweight, single hole fixing UHF “whip” antenna suitable for helicopters or aircraft operation up to 350 knots.

The antenna design features a radiating element encapsulated within a strong glass-epoxy tube which in turn is integrated into an aluminum alloy base containing a TNC connector and loss-less matching cavity.

Installation requires insertion into a 17.5mm (11/16in) hole in the airframe and securing with the washes and nuts provided.

  • Very light weight
  • Narrow Band UHF/FM operation
  • Single hole fixing
  • Suitable for up to 350 knots
  • TNC female connector 
21-30-71
Model # 21-30-71
Brand Cooper Antennas
Frequency 443-450 MHz 
Gain ≥ +3.5 dBi at beam max
VSWR

≤ 1.5:1 across band

≤ 1.2:1 @ 446.7 MHz 

Impedance (nominal) 50 Ohms
Power 50 Watts CW 
Polarization Vertical (when vertically mounted) 
Radiation Omni-directional in azimuth within 0.25 dB when vertically mounted 
Antenna RF Connector  TNC Female
Antenna Length 9 inches (229mm)
Weight 150mm (5.9 inches) max 

Finish

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

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