VHF Airborne Blade Antenna
170 to 220 MHz
The 21-20-19 is a high performance VHF airborne blade antenna suitable for use on fixed and rotary wing aircraft.
Construction is from a one piece glass loaded thermoplastic moulding intimately bonded into an aluminum alloy base block which houses the matching circuits and provides for very solid attachment to the airframe via 6 fixing holes drilled to the same pattern as the AT-256 UHF antenna.
The metal base block also enables the 21-20-19 to meet the lightning protection requirements of AS-3191/A.
Internal radiating elements are shaped in such a way as to produce minimum VSWR and also to optimize radiation. The antenna assembly is sealed by close cell foam and finished in lusterless black urethane paint.
|Frequency||170 MHz to 220 MHz|
|Gain (typical)||+1 dBi typical|
|Impedance (nominal)||50 Ohms|
|Power||50 Watts CW|
|Polarization||Vertical (when mounted vertically)|
|Radiation||Omni directional in azimuth plane|
|Antenna RF Connector||N Female|
|Antenna Shell Type||Glass loaded thermoplastic blade in aluminum alloy base collar|
|Height||9.10 inches (231mm)|
|Weight||0.9 lbs (0.4kg)|
|Side Loading||≥ 8 psi ultimate|
|Base Plate Shape||Diamond shape|
|Fixing Holes||6 x Ø 0.203 inch (5.2mm) holes, counter bored Ø 0.43 inches (10.9mm)|
- Urethane Lusterless Black
- Other finish options are available.
- Please specify finish required when ordering.