Airborne Stub Antenna
65 to 125 MHz
SKU: 21-20-12
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Covering the 65-125 MHz VHF frequency band, the 21-20-12 is a lightweight broadband stub antenna intended for helicopter and moderate speed aircraft.
Construction uses an advanced fiberglass covered radiating element bonded into a machined aluminum base.
Unique double trap design ensures good elevation pattern throughout the frequency band and passive matching housed within the base maintains VSWR within 2.5:1 and provides excellent gain for such a small overall structure.
- Covers limited VHF Comms band
- Robust Fiberglass construction
- Lightweight
- Designed to meet MIL-STD-810 Environmental Specification
- Low profile, 21 inch height
- Omni-directional azimuthal radiation pattern
- 50 Watts power handling
- Gain from -15 to -10 dBi
| 21-20-12 | |
| Model # | 21-20-12 |
| Brand | Cooper Antennas |
| Frequency | 65 - 125 MHz |
| Gain (at beam max) | 65 MHz -15 dBi 125 MHz better than -10 dBi |
| VSWR | 65-125 MHz ≤ 2.5:1 |
| Impedance (nominal) | 50 Ohms |
| Power | 50 Watts |
| Polarization | Vertical |
| Radiation | Omni directional in azimuth plane |
| Antenna RF Connector | TNC Female |
| Antenna Shell Type | Glass/Epoxy element in aluminum alloy base collar with internal printed circuit element |
| Height | 21 inches (533mm) |
| Weight | 0.9 lbs (0.4kg) |
| Base Plate Shape | Circular |
| Fixing Holes | 4 x Ø 0.196 inch (5mm) holes, counter sunk 100°. |
Finish
- Urethane Lusterless Black
- Other finish options are available.
- Please specify finish required when ordering.
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