Broadband VHF/UHF Airborne Blade Antenna
30 to 512 MHz
The 21-50-02 is a vertically polarized, omni-directional antenna compatible with airborne radios operating within the 30 MHz to 512 MHz frequency range. This antenna can handle 50 Watts of power and requires no external tuning. Use of a top loading element, which is shaped to prevent fouling of cables during ground handling and low level flight, also enhances VHF performance beyond that of the standard AS-3191 at the slight expense of UHF performance. Use of a surface deposited radiating element optimizes efficiency and the radiating element is DC grounded for lightning protection.
These wideband, multi-function antennas developed by Cooper Antennas Ltd are particularly suited to tactical military applications. Rugged design ensures reliability in world wide conditions of service on helicopters, UAV’s and aircraft operating at speeds up to Mach 0.85 subject to aerodynamic loading and vibration levels imposed.
- High Strength Blade Antenna with performance enhancing top loading
- Frequency Selective Passive Matching Network
- Fully Foamed to Provide High Environmental Integrity
- Aluminum Alloy Retaining Collar and Top Loading Bar Clamp
- Drop-on Replacement for AT-1108 and AS3191
- Designed to MIL-STD-810
|Frequency||30-88, 108-174 and 225-512 MHz|
-17.5 dBi at 30 MHz
-7 dBi at 88 MHz
+1 dBi average 108-174/225-512 MHz
|Impedance (nominal)||50 Ohms|
|Power||50 Watts CW|
|Radiation Pattern||Azimuth: Omni-directional (nominal) Elevation : Similar to a stub, see roll plane patterns|
|Antenna RF Connector||TNC type Female|
|Antenna Shell Type||High density foam filled epoxy/fiber glass shell set in aluminum alloy base collar with aluminium alloy top loading bar|
|Height||14.5 inches (368mm)|
|Weight||5 pounds (2kg)|
|Side Loading||≥ 8 psi ultimate|
|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.