DatasheetTri-Band ELT Antenna
121.5, 243 and 406 MHz
SKU: 21-50-42
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The 21-50-42 is an externally mounted airborne VHF/UHF antenna operating at the three primary distress frequencies.
A fiberglass rod with an internal element is fitted into an aluminum base which contains foamed-in place matching circuits capable of handling up to 25 Watts power.
The method of construction provides protection from world-wide military environmental conditions including vibration, shock and temperature variations.
- Covers 121.5, 243 and 406 MHz without tuning
- Very lightweight
- For helicopter and fixed wing aircraft up to 350 Knots
- Glass/Epoxy – Aluminum construction
- Small footprint
- Meets AS3191 lightning requirements
- Designed to DO 160 Environmental conditions
| 21-50-42 | |
| Model # | 21-50-42 |
| Brand | Cooper Antennas |
| Frequency | 121.5, 243 and 406 MHz |
| Gain |
+ 2dBi (UHF) - 5dBi (VHF) |
| VSWR |
2.0:1 max @ 121.5 and 243 MHz 1.5:1 max @ 406 MHz |
| Impedance (nominal) | 50 Ohms |
| Power | 25 Watts |
| Polarization | Vertical |
| Radiation Pattern | Nominally omni directional in azimuth plane |
| Antenna RF Connector | BNC Female |
| Antenna Shell Type | Fiberglass whip/ Aluminum base |
| Height | 15.5 inches (394mm) |
| Weight | 0.45 lb (0.20kg) |
| Base Plate Shape | Tear drop |
| Fixing Holes | 4 x Ø 0.170 inches (4.3mm) ±0.005 inches (0.127mm) holes, counter sunk at 100° Ø 0.325 inches (8.1mm). |
Finish
- Urethane Lusterless Black Standard
- Other finish options are available.
- Please specify finish required when ordering.
Datasheet:
