DatasheetBroadband Airborne Blade Antenna
30 to 400 MHz
SKU: 21-50-20
The 21-50-20 is a vertically polarized, omni-directional antenna, compatible with all popular airborne radios operating within the 30 to 400 MHZ frequency range.
The 21-50-20 antenna can handle 50 Watts of power and requires no external tuning. The 21-50-20 is a wideband, multi-function antenna developed by Cooper Antennas Ltd and is particularly suited to tactical military communications. Rugged design ensures reliability in world wide conditions of service on aircraft operating at speeds up to Mach 1.0.
Use of a surface deposited radiating element optimizes efficiency. The element is DC grounded for lightning protection.
- High Strength Broadband Blade Antenna
- Frequency Selective Matching Network
- Fully Foamed to Provide High Environmental Integrity
- Aluminum Alloy Retaining Collar Accepts High Side Loading
- Equivalent to AS-3191/A & AS-3793/A
- Suitable for AN/ARC-182, AN/ARC-186 and Similar Multi-Mode Radios
- Complies with MIL-STD-810
- Meets Requirements of NSN 5985-01-134-2291
- Meets MIL-DTL-8567B lightning protection requirements
| 21-50-20 | |
| Model # | 21-50-20 |
| Brand | Cooper Antennas |
| Frequency |
30 - 88 MHz 108 - 174 MHz 225 - 400 MHz |
| Gain |
30 MHz ≥ - 23.0 dBi 88 MHz ≥ - 11.0 dBi 108-174 MHz -3.0 dBi average 225-400 MHz +3.0 dBi average |
| VSWR |
≤ 2.5:1 30 - 88 MHz ≤ 2.5:1 108 - 118 MHz ≤ 2.0:1 118 - 174 MHz ≤ 2.0:1 225 - 400 MHz |
| Impedance (nominal) | 50 Ohms |
| Power | 50 Watts CW |
| Polarization | Vertical |
| Radiation Pattern |
Azimuth : Omni-directional Elevation : As stub |
| Antenna RF Connector | BNC Female |
| Antenna Shell Type | High density foam filled epoxy/fiber glass shell set in aluminum alloy base collar |
| Height | 14.6 inches (371mm) |
| Weight | 0.9 lbs (0.4kg) |
| Side Loading | ≥ 8 psi ultimate |
| Base Plate Shape | Tear drop |
| Fixing Holes | 6 x Ø 0.234 inches (6mm) holes, counter sunk at 100° Ø 0.39 inches (9.9mm) |
Finish
- Urethane Lusterless Black Standard
- Other finish options are available.
- Please specify finish required when ordering.
