C/D Band Airborne Blade Antenna

960 to 1220 MHz

SKU: 21-40-12

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C/D Band Airborne Blade Antenna

The 21-40-12 is a C/D (L-Band) airborne blade antenna designed for high performance aircraft and covering MIDS 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, shunt-grounded 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 with a centrally mounted, TNC-type female coaxial connector. 

  • Covers LINK 16, IFF, TACAN, JTIDS & MIDS
  • Low profile, diamond shaped blade
  • Designed to meet MIL-STD-810
  • Fully Environmentally sealed
  • Grounded for P- static protection
  • Lossless matching - high RF efficiency
  • Omnidirectional radiation pattern
21-40-12
Model # 21-40-12
Brand Cooper Antennas
Frequency 960 - 1220 MHz
Gain (average)  Typically +4 dBi 
VSWR

≤ 1.8:1 (960 - 1220 MHz)

≤ 1.5:1 (1020 - 1100 MHz) 

Impedance (nominal) 50 Ohms
Power 200 Watts CW, 4 KW peak 
Polarization Vertical
Radiation Omni-directional in azimuth, similar To stub in elevation
Antenna RF Connector  TNC Female
Element Height 2.75 inches (70mm) 
Weight 0.5 lbs (0.225kg)
Fixing Holes 6 x Ø 0.203 inch (5.2mm) holes, counter bored Ø 0.43 inch (10.9mm) 

Finish

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

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