ADYS-156-162
High Gain Marine Band Dual Yagi Antenna
| Model | Product Description | Frequency | Gain | Download | Enquiry | |
|---|---|---|---|---|---|---|
| ADYS-156-162 | High Gain Marine Band Dual Yagi Antenna | 156-162MHz | 12 dBi |  |  |  |
ADYS-156-162: Versatile Dual Stacked VHF Marine Band Yagi Antenna
The ADYS-156-162 is an innovative dual-stacked Yagi antenna system designed for the 156–162 MHz Marine Band. Unlike standard stacked systems that only focus on maximum gain in one direction, the "S" variant is engineered for sector coverage and bi-directional applications. This allows maritime operators to cover wider harbor areas or provide simultaneous signal coverage in opposite directions (back-to-back), making it a critical tool for GMDSS and coastal vessel traffic management.
Design and Versatility
The ADYS-156-162 consists of two high-performance Yagi antennas that can be configured in multiple ways. By adjusting the installation of the two booms, users can achieve wider sector coverage or a bi-directional (back-to-back) radiation pattern. The system includes a central stacking pipe, a high-efficiency power divider, and a phasing harness as standard. Its unique feed design maintains high electrical efficiency without the need for a folded dipole, ensuring a robust and simplified signal path.
Fabrication and Marine Resilience
Constructed to excel in severe salt-air environments, the antenna utilizes 6063T6 ultra-corrosion-resistant architectural aluminum alloy for both the 25.4mm square-tube booms and the 19mm round-tube radiating elements. All mounting hardware is manufactured from Type 316 marine-grade stainless steel. To prevent degradation from UV radiation and corrosive gases, the entire system is finished with a durable powder coating. The modular design allows elements to be removed for compact shipping, with fast on-site assembly using standard hand tools.
Performance and Reliability
Operating with a 12 dBi gain, the ADYS-156-162 provides a stable and powerful link for GMDSS communication. It supports both Horizontal and Vertical polarization and can be stacked either way to control the beam-width in the desired plane. With a power handling capacity of 250 Watts and a wind rating of 190 Km/Hr, this antenna is built for 24/7 mission-critical service in the most demanding maritime weather conditions.
Key Technical Features
- Configurable Coverage: Supports wide-sector or bi-directional (back-to-back) installation.
- Dual Yagi System: Includes two booms, stacking pipe, and a precision phasing harness.
- Marine-Grade Build: 6063T6 Aluminum and 316 Stainless Steel for maximum life in salt-fog.
- Optimized Feed Design: High efficiency with a low VSWR of 1.5:1 across the 6 MHz band.
- High Power Tolerance: 250 Watts continuous RF power handling.
- Easy Logistics: Segmented elements for easy transport; 2.2-meter shipping length.
- Weatherproof Termination: N-Female input designed for 100% humidity environments.
Regulatory Compliance & Standards
- CE Certified: Compliant with European health and safety regulations.
- RoHS Compliant: Manufactured without hazardous substances for eco-friendly operation.
- WEEE Directive: Meets EU requirements for electronic waste management.
- GMDSS Compatible: Ideal for maritime safety systems used to rescue ships and aircraft.
Key Advantages
- Flexible Deployment: One antenna system can solve multiple coverage challenges (sector vs. directional).
- Consolidated Hardware: Replaces the need for two separate antenna installations with a single integrated system.
- Zero Maintenance: Factory-tuned and powder-coated for "fit and forget" long-term use.
- Improved Safety: High gain and reliability ensure distress signals are transmitted and received clearly.
Key Antenna Applications
- Port and Harbor Radio: Covering complex waterway shapes with sector-based configurations.
- GMDSS Infrastructure: Enhancing coastal safety-of-life-at-sea networks.
- Bi-Directional Links: Providing coverage along coastlines or narrow channels in both directions.
- Coastal AIS Base Stations: Broadening the detection area for Automatic Identification System data.
Design Features : Antenna Experts dual stacked yagi antenna design reflects innovative modern antenna construction and designed to increase the coverage in different direction. The antenna can be installed in two different directions to cover a wider sector or in back to back configuration for bi-directional coverage. The dual stacked yagi antenna uses special feed which eliminates the use of folded dipole. The dual yagi antenna when packed comes with elements removed from the antenna boom for ease of packing and transportation. This yagi antenna can be assembled at site with simple hand-tools. The dual stacked yagi antenna is supplied with a stacking pipe, power divider and phasing harness cable as standard accessories. Antenna Experts yagi antennas are highly suitable for GMDSS communication equipments used to increase maritime safety and make it easier to rescue distressed ships, boats and aircraft.
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