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Broadband Airborne Blade Antenna

100 to 500 MHz

SKU: 21-50-300

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Broadband Airborne Blade Antenna

The 21-50-300 is vertically polarized, omni-directional antenna, compatible with all popular airborne radios operating within the 100 to 500 MHz frequency range. The antenna can handle 75 Watts of power and requires no external tuning.

This wideband multifunction antenna developed by Cooper Antennas Ltd is particularly suited to tactical military 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 static protection. 

  • High Strength Broadband Blade Antenna
  • Frequency Selective Matching Network
  • Fully Foamed to Provide High Environmental Integrity
  • Designed to MIL-DTL-85670B Specification
  • Drop-on Replacement for AT-1108
  • Complies with MIL-STD-810
21-50-300
Model # 21-50-300
Brand Cooper Antennas
Frequency 100 - 500 MHz
Gain

100 MHz ≥ -8 dBi

108 MHz ≥ -7 dBi

130 MHz ≥ -7 dBi

174 MHz ≥ -1 dBi

225 MHz ≥ 0 dBi

300 MHz ≥ 0 dBi

400 MHz ≥ +1 dBi

500 MHz ≥ +1 dBi 

VSWR

100 - 174 MHz ≤ 2.5:1

225 - 400 MHz ≤ 2.25:1

400 - 450 MHz ≤ 2.5:1

450 - 500 MHz ≤ 3.0:1 

Impedance (nominal) 50 Ohms
Power 75 Watts CW 100 - 500 MHz  
Polarization Vertical
Radiation Pattern

Azimuth : Omni-directional

Elevation : As stub

Antenna RF Connector TNC Female
Antenna Shell Type High density foam filled epoxy/fiber glass shell with aluminum alloy base plate 
Height 11.8 inches (300 mm)
Weight 3.5 lbs (1.6 kg) 
Side Loading  ≥ 8 psi ultimate 
Base Plate Shape Tear drop 
Fixing Holes 6 x Ø 0.234 inches (5.9 mm) holes, counter bore Ø 0.39 inches (9.9mm) 

Finish

  • Antenna - Gloss White
  • Other finish options are available.
  • Please specify finish required when ordering.
Datasheet:

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