DatasheetUHF/L-Band Airborne Blade Antenna
225 to 450 MHz & 960 to 1220 MHz
SKU: 21-50-16-1
The 21-50-16-1 is a high performance combined UHF/L-band airborne blade antenna suitable for subsonic and supersonic aircraft. It also is ideal for use on aircraft subjected to rough-runway operation where both a metal leading edge capping and the solid aluminum alloy base block protect against debris impact.
Construction is from a one piece glass loaded thermoplastic blade molding intimately bonded into an aluminum alloy base block which houses the matching circuits and provides for very solid attachment to airframe via 6 fixing holes drilled to the same pattern as the AT-256 UHF antenna.
Integral radiating elements are shaped in such a way as to produce minimum VSWR in both UHF and L-band and also to optimize radiation pattern at L-band where the antenna would otherwise be electrically too long.
The antenna assembly is sealed by closed cell foam and finished in lusterless grey urethane paint.
The 21-50-16-1 can be used with CAL diplexer P/N 21-80-16-1.
- Covers EPLRS/UHF Com and TACAN/IFF/LINK16
- High Isolation provided by external diplexer
- High Strength Composite Blade with Aluminum Alloy Base
- Low Side Area, Low Drag
- Polyurethane leading edge protection
- Single ‘N’ Type Connector
- Drop-on replacement for AT-256, NSN’s 5985-01- 418-6105 and 5985-01-331-8710 Environmental Performance to MIL-STD-810
| 21-50-16-1 | |
| Model # | 21-50-16-1 |
| Brand | Cooper Antennas |
| Frequency | UHF : 225 to 450 MHz |
| Gain |
UHF : ≥ 0 dBi L-Band : ≥ 0 dBi |
| VSWR |
225-240 MHz ≤ 2.5:1 240-450 MHz ≤ 2.0:1 960-1220 MHz ≤ 1.8:1 |
| Impedance (nominal) | 50 Ohms |
| Power | UHF : 100 Watts CW |
| Polarization | Vertical |
| Radiation Pattern | Omni directional in azimuth |
| Antenna RF Connector | N Female |
| Antenna Shell Type | Glass loaded thermoplastic blade in aluminum alloy base collar |
| Height | 7.95 inches (202mm) |
| Weight | 1 lb (0.45kg) |
| Side Loading | ≥ 8 psi ultimate |
| Base Plate Shape | Diamond shape |
| Fixing Holes | 6 x Ø 0.205inch (5.2mm) holes, counter bored Ø 0.39 inches (9.9mm) |
Finish
- Urethane Lusterless Gtrey
- Other finish options are available.
- Please specify finish required when ordering.
