VHF/UHF Airborne Blade Antenna
30 to 512 MHz
The 21-50-08 is a passive airborne blade antenna requiring no tuning and providing exceptional gain in a 9 inch tall structure having just 9 inches of top loading.
Use of optimised proprietary matching techniques has produced an antenna design that provides full SINCGARS/BOWMAN and VHF/UHF communications frequency coverage whilst accepting input power up to 50 watts.
The exceptional performance provided by this antenna offers the VHF\UHF system designer a viable alternative to equivalent sized tuneable antennas with consequent increase in reliability, simpler installation and substantial cost savings.
Electrical design comprises a three dimensional top loaded discone fed via a multiplicity of passive tuned circuits that optimise gain over the various bands within a VSWR typically better than 2.5:1.
|Frequency||30 - 512 MHz|
30 MHz ≥ -23 dBi
88 MHz ≥ -12 dBi
116 MHz ≥ -3 dBi
137 MHz ≥ +1 dBi
152 MHz ≥ -3 dBi
174 MHz ≥ -3.5 dBi
225 MHz ≥ +1 dBi
300 MHz ≥ +3 dBi
400 MHz ≥ +3 dBi
407 MHz ≥ +3 dBi
512 MHz ≥ 0 dBi
|VSWR||≤2.5:1 (30-174/225-512 MHz)|
|Impedance (nominal)||50 Ohms|
|Power||50 Watts CW|
Azimuth : Omni-directional nominal
Elevation : See graph
|Antenna RF Connector||TNC Female|
|Antenna Shell Type||High density foam filled epoxy/ fibre glass shell set in aluminium alloy base collar|
|Height||9 inches (229mm)|
|Weight||4 lbs (1.8kg) max|
|Base Plate Shape||Tear drop|
|Fixing Holes||6 x Ø 0.234 inch (5.9mm) holes, counter bored Ø 0.39 inches (9.9mm)|
- Urethane Lusterless Black Standard
- Other finish options are available.
- Please specify finish required when ordering.