C/D/E Band Airborne Blade Antenna

700 to 2700 MHz

SKU: 21-40-49

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C/D/E Band Airborne Blade Antenna

The 21-40-49 is an extended frequency C/D/E (L-Band) airborne blade antenna designed for high performance aircraft and covering data link as well as TACAN and IFF frequencies. It is a direct footprint replacement for AT256 UHF Blade antennas. Electrical design is based on a 2-dimensional, discone which is of high efficiency and provides nearly omnidirectional azimuthal radiation.

Mechanical design uses an advanced, glass-loaded thermoplastic radome with an integral radiating element, all foamed-in-place for structural and environmental integrity.

The blade has an aluminum alloy base plate with a centrally mounted, N-type female coaxial connector. 

  • Covers LINK 16, IFF, TACAN, JTIDS & other Data Links
  • Low profile, diamond shaped blade
  • Designed to meet MIL-STD-810
  • Fully Environmentally sealed
  • Grounded for lightning protection
  • Lossless matching - high RF efficiency
  • Omnidirectional radiation pattern
21-40-49
Model # 21-40-49
Brand Cooper Antennas
Frequency 700 - 2700 MHz 
Gain (average) +2 dBi 
VSWR ≤ 2.0:1 
Impedance (nominal) 50 Ohms
Power 200 Watts CW, 2k Watts peak
Polarization Vertical
Radiation Nominally omni-directional in azimuth, similar to stub in elevation 
Antenna RF Connector  N Female
Element Height 2.8 inches (71 mm) 
Weight 0.44 lbs (0.2kg) max 
Fixing Holes 6 x Ø 0.203 inch (5.2mm) holes, counter bored Ø 0.43 inch (10.9mm) 
Gasket (sold separately)  Part number 69-40-49 

Finish

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

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