UHF Airborne Blade Antenna
320 to 960 MHz
SKU: 21-30-03
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The 21-30-03 is a high performance combined UHF airborne blade antenna suitable for helicopters and aircraft operating up to Mach 1.
Construction is from a one piece, glass loaded thermoplastic molding intimately bonded onto an aluminum alloy base which houses the matching circuits and provides for very solid attachment to the airframe via 6 fixing holes drilled to match the AT-256 UHF antenna footprint.
Internal radiating element are shaped in such a way as to produce minimum VSWR and also to optimize radiation. The antenna assembly is sealed by closed cell foam and finished in lusterless black or grey urethane paint.
- Covers UHF Telemetry Bands
- High Strength Composite Blade
- Low Side Area, Low Drag
- Single ‘N’ Type Connector
- Drop-on replacement for AT-256
- Environmental Performance to MIL-STD-810
- Foamed in place radiating element
| 21-30-03 | |
| Model # | 21-30-03 |
| Brand | Cooper Antennas |
| Frequency | 146-174 MHz |
| Gain (typical) | + 2.5 dBi average, + 1 dBi minimum |
| VSWR | ≤ 2.5:1 |
| 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 on an aluminum alloy base |
| Height | 6.3 inches (160mm) |
| Weight | 0.8 lbs (0.37kg) |
| 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) |
Finish
- Urethane Lusterless Black
- Other finish options are available.
- Please specify finish required when ordering.
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