UHF/L-Band Airborne Antenna
225 to 512 & 950 to 1220 MHz
The 21-50-06-20 is a high performance combined UHF/L-band airborne blade antenna suitable for aircraft operating in excess of Mach 2. It is also ideal for use on aircraft subjected to roughrunway operation where both a protective leading edge strip and the solid aluminum alloy base block protect against debris impact.
Construction is from a one piece fiberglass blade molding intimately bonded into an aluminum alloy base block which houses the matching circuits and provides for very solid attachment to airframe via 8 fixing holes.
Radiating elements are surface deposited silvery epoxy shaped in such a way as to produce minimum VSWR in both UHF and L-band and also to optimize radiation pattern at L-band where the antenna would otherwise be electrically too long.
The antenna assembly is sealed by closed cell foam for reliable operation in world-wide conditions of service.
- Covers standard UHF Com, TACAN, IFF Bands
- High Isolation provided by external diplexer
- High Strength Composite Blade with Aluminum Alloy Base Block
- Low Side Area, Low Drag
- Leading Edge Protection for Rough Field Operation
- Meets Lightning Strike Criteria of AS-3191
- Environmental Performance to MIL-STD-810, MIL-E-5400
UHF : 225 to 512 MHz
L-Band : 950 to 1220 MHz
UHF : with in 1.5 dB of λ/4 stub
L-Band : with in 1.6 dB of λ/4 stub
UHF : 225 - 512 MHz ≤ 2.5:1
L-Band : 960-1220 MHz ≤ 2.0:1
|Impedance (nominal)||50 Ohms|
UHF : 45 Watts CW
L-Band : 2 Watts average 2.5 kWatts Peak
|Polarization||Vertical (when mounted vertically)|
|Radiation Pattern||Omni directional in azimuth plane to ± 1 dB|
|Antenna RF Connector||UHF TNC Female L-Band TNC Male|
|Antenna Shell Type||Epoxy/fiber glass blade in aluminum alloy base collar|
|Height||7.73 inches (196mm)|
|Weight||1.63 lbs (0.74kg)|
|Side Loading||≥ 8 psi ultimate|
|Base Plate Shape||Oval shape|
|Fixing Holes||8 x Ø 0.208 inch (5.28mm) holes, counter sunk 100°.|
- Urethane Grey
- Other finish options are available.
- Please specify finish required when ordering.