Wideband VHF/UHF Airborne Blade Antenna
20 to 500 MHz
SKU: 21-50-03
The 21-50-03 is a vertically polarized, omni-directional antenna, compatible with airborne receivers operating within the 20 to 500 MHZ frequency range. This antenna is passively matched and requires no external tuning.
This wideband, multi-function antenna developed by Cooper Antennas Ltd is particularly suited for use in VHF/UHF arrays. Rugged design ensures reliability in world wide conditions of service on helicopters and subsonic aircraft.
Use of frequency selective matching optimizes efficiency and provides omnidirectional radiation throughout the operating frequency range. Unique element shaping preserves elevation pattern throughout frequency band.
- High Strength Broadband Top-loaded Blade Antenna
- Passive Matching Network
- Requires no external tuning
- Fully Foamed for High Environmental Integrity
- Suitable for use in DF arrays
- Designed to MIL-STD-810
| 21-50-03 | |
| Model # | 21-50-03 |
| Brand | Cooper Antennas |
| Frequency | 20 - 500 MHz |
| Gain (typical) |
20 MHz ≥ -38 dBi 30 MHz ≥ -28 dBi 88 MHz ≥ -6 dBi 108 MHz ≥ -2 dBi 130-174 MHz ≥ 0 dBi 225-500 MHz ≥ 0 dBi average |
| VSWR |
≤ 3.5:1 20 - 30 MHz ≤ 3:1 30 - 500 MHz |
| Impedance (nominal) | 50 Ohms |
| Power | 5 Watts CW |
| Phase/Amplitude matching | These antennas can be selected for phase and amplitude matching for use in DF systems, either to a “Golden Standard” or in sets. |
| Polarization | Vertical |
| Radiation | Azimuth: Omni-directional Elevation: As stub |
| Antenna RF Connector | TNC 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 | 14.75 inches (375mm) |
| Weight | 5.16 lbs (2.34kg) |
| Base Plate Shape | Tear drop |
| Fixing Holes | 10 x Ø 0.208 inch (5.3mm) holes, counter bored Ø 0.48 inches (12.2mm) |
Finish
- Urethane Lusterless Black Standard
- Other finish options are available.
- Please specify finish required when ordering.
