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VHF Airborne Blade Antenna

115 to 325 MHz

SKU: 21-50-25

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VHF Airborne Blade Antenna

The 21-50-25 is a vertically polarized, omni-directional antenna, compatible with airborne radios operating within the 115 to 325 MHz frequency range. This antenna can handle 50 Watts of power and requires no external tuning.

This VHF antenna developed by Cooper Antennas Ltd is particularly suited to civil and military VHF communications. Rugged design ensures reliability in world wide conditions of service on aircraft operating at speeds up to Mach 0.95 The radiating element is DC grounded for lightning protection. 

  • High Strength Broadband Blade Antenna
  • 50 Watts Power Handling Capability
  • Low Loss Matching Network
  • Fully Foamed to Provide High Environmental Integrity
  • Aluminum Alloy Retaining Collar Accepts High Side Loading
  • Drop-on Replacement for AT-1108
  • Meets DO-160 Lightning Indirect Effects (LITS) requirements
  • Complies with MIL-STD-810
  • DC Grounded for P-Static Protection 
21-50-25
Model # 21-50-25
Brand Cooper Antennas
Frequency 115 - 325 MHz
Gain

0 dBi average 115 - 225 MHz

+ 3 dBi average 225 - 325 MHz 

VSWR ≤ 2.5:1 
Impedance (nominal) 50 Ohms
Power 50 Watts CW 
Polarization Vertical
Radiation Pattern

Azimuth : Omni-directional

Elevation : As stub 

Antenna RF Connector N Female
Antenna Shell Type High density foam filled epoxy/fibre glass shell set in aluminum alloy base collar
Height 14.75 inches (375mm) 
Weight 4 lbs (1.8kg) 
Side Loading  ≥ 8 psi ultimate 
Base Plate Shape Tear drop 
Fixing Holes 6 x Ø 0.200 inches (5mm) holes, counter sunk at 100° 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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