DatasheetUHF Airborne Blade Antenna
291.4 ± 0.5 MHz
SKU: 21-30-24-1
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The 21-30-24-1 is an airborne blade antenna designed for helicopters and high performance aircraft covering the UHF Sonobuoy Command frequency. It is a direct footprint replacement for AT256 UHF Blade antennas.
Electrical design is based on a 2-dimensional, monopole which is of high efficiency and provides nearly omni-directional 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 is built into a contoured base collar and has a centrally mounted, N-type female coaxial connector on an aluminium alloy baseplate to which the radiating element is DC grounded for p-static protection.
| 21-30-24-1 | |
| Model # | 21-30-24-1 |
| Brand | Cooper Antennas |
| Frequency | 291.4 ± 0.5 MHz |
| Gain | ≥2 dBi |
| VSWR | ≤ 2.0:1 |
| Impedance (nominal) | 50 Ohms |
| Power | 30 Watts CW |
| Polarization | Vertical |
| Radiation | Omni-directional in azimuth, similar to stub in elevation |
| Antenna RF Connector | N Female |
| Antenna Shell Type | Glass loaded thermoplastic blade |
| Height | 5.8 inches (147.3 mm) max |
| Weight | 0.75 lbs (0.34 Kg) max |
| Side Loading | ≥ 8 psi ultimate |
| Base Plate Shape | Diamond shape |
| Fixing Holes | 6 x Ø 0.203 inch (5.2 mm) holes, counter bored Ø 0.43 inches (10.9 mm) |
Finish
- Urethane Lusterless Black
- Other finish options are available.
- Please specify finish required when ordering.
Datasheet:
