Broadband VHF Airborne Blade Antenna
30 to 156 MHz
SKU: 21-20-06
The 21-20-06 is a vertically polarized, omni-directional antenna compatible with all popular airborne radios operating within the 30 MHz to 156 MHz frequency range. This antenna can handle 100 Watts of power and requires no external tuning. Use of a top loading element , which is shaped to prevent fouling of cables during ground handling and low level flight , also enhances VHF performance beyond that of the standard AS-3191 at the expense of UHF performance. Use of a surface deposited radiating element optimizes efficiency and the radiating element is DC grounded for lighting protection.
These wideband, multi-function antennas developed by Cooper Antennas Ltd are particularly suited to tactical military communications. Rugged design ensures reliability in world wide conditions of service on helicopters and aircraft operating at speeds up to Mach 0.5.
- High Strength Blade Antenna with performance enhancing top loading
- Frequency Selective Passive Matching Network
- No Tuning Required
- Fully Foamed to Provide High Environmental Integrity
- Drop-on Footprint Replacement for AT-1108 and AS-3191
- Suitable for AN/ARC-186 and Similar Multi-Band VHF Radios
- Designed to MIL-STD-810
- Meets Requirements of High Strength Blade Antenna with performance enhancing top loading Frequency Selective Passive Matching Network No Tuning Required Fully Foamed to Provide High Environmental Integrity Drop-on Footprint Replacement for AT-1108 and AS-3191 Suitable for AN/ARC-186 and Similar Multi-Band VHF Radios Designed to MIL-STD-810 Meets Requirements of 5985-01-263-9905
| 21-20-06 | |
| Model # | 21-20-06 |
| Brand | Cooper Antennas |
| Frequency |
30 - 88 MHz 108 - 156 MHz |
| Gain (typical) |
30 MHz ≥ - 11.5 dBi 88 MHz ≥ 0.0 dBi 108 MHz ≥ - 3.0 dBi 156 MHz ≥ 0.0 dBi |
| VSWR |
≤ 2.5:1 30 - 88 MHz ≤ 2.5:1 108 - 156 MHz |
| Impedance (nominal) | 50 Ohms |
| Power | 100 Watts CW |
| Polarization | Essentially Vertical |
| Radiation |
Azimuth : Omni-directional (nominal) Elevation : As stub (nominal) |
| Antenna RF Connector | BNC Female |
| Antenna Shell Type | High density foam filled epoxy/fibre glass shell set in aluminum alloy base collar |
| Height | 14.7 inches (373mm) |
| Weight | 14.7 inches (373mm) |
| Side Loading | ≥ 8 psi ultimate |
| Base Plate Shape | Tear drop |
| Fixing Holes | 6 x Ø 0.234 inch (5.9mm) holes, counter bored Ø 0.39 inches (9.9mm) |
Finish
- Urethane Lusterless Black
- Other finish options are available.
- Please specify finish required when ordering.
