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VHF/UHF High Power Airborne Blade Antenna

100 to 500 MHz

SKU: 21-50-21

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VHF/UHF High Power Airborne Blade Antenna

The 21-50-21 is an airborne blade capable of accepting high power inputs over the continuous frequency range of 100-500 MHz.

Designed as a modified discone with loss-less matching, the antenna comprises a three dimensional radiating element contained within a one-piece molded radome of glass-epoxy. Attachment to airframe is via a substantial aluminum baseplate with 8 mounting holes making the antenna suitable for transporttype aircraft operating up to Mach 0.85. 

  • Continuous Frequency Coverage
  • 300 Watts CW power handling, 500 Watts with duty cycle
  • Passive design - does not require tuning
  • DC Grounded Element
  • Rugged aerofoil radome
  • Suitable for use up to Mach 0.85 subject to side loading
  • Designed to MIL-STD-810 Environmental Conditions 
21-50-21
Model # 21-50-21
Brand Cooper Antennas
Frequency 100 - 500 MHz continuous 
Gain ≥ 1 dBi @ 100 MHz ≥ 2 dBi @ 200 MHz ≥ 3 dBi 300 to 500 MHz
VSWR 3:1 max 100 - 200 MHz } see graph 2.5:1 max 201- 500 MHz } 
Impedance (nominal) 50 Ohms
Power 300 Watts CW, 500 Watts with 10% Duty Cycle 
Polarization Vertical when vertically mounted
Radiation Pattern Nominally Omnidirectional (with ± 1.5 dB) azimuth 
Antenna RF Connector N Female
Height 16 inches (406mm) max 
Weight 6 lbs (2.73kg) 
Fixing Holes 8 x Ø 0.234 0.208 inch holes 

Finish

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

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