ADY-156-162
High Gain Dual Stacked Yagi Antenna
| Model | Product Description | Frequency | Gain | Download | Enquiry | |
|---|---|---|---|---|---|---|
| ADY-156-162 | High Gain Dual Stacked Yagi Antenna | 156-162MHz | 15 dBi |  |  |  |
ADY-156-162: Ultra High-Gain VHF Marine Band Dual Stacked Yagi Antenna
The ADY-156-162 is a professional-grade directional antenna system engineered for long-range communication within the 156–162 MHz Marine Band. By utilizing a dual-stacked configuration, this system achieves a massive 15 dBi gain, making it one of the most powerful directional solutions available for maritime safety, GMDSS, and coastal surveillance. This antenna is designed to provide a concentrated, high-intensity beam for critical point-to-point or sector-based communication.
Design and Configuration
The ADY-156-162 features an innovative dual-stacked Yagi design that incorporates two high-gain Yagi antennas synchronized through a precision power divider and phasing harness. This stacking technique adds an additional 3 dB of gain over a single Yagi, focusing the energy into a tighter beam-width (25° Horizontal / 40° Vertical when stacked horizontally). The unique feed system eliminates the need for a traditional folded dipole, reducing complexity while maintaining a low VSWR. The system is fully adjustable, allowing for either Horizontal or Vertical polarization depending on the specific network requirements.
Fabrication and Marine-Grade Construction
Built to survive the relentless corrosive forces of saltwater environments, the ADY-156-162 is fabricated from 6063T6 ultra-corrosion-resistant architectural aluminum alloy. The square-tube supporting booms and round-tube radiating elements provide exceptional structural rigidity. All mounting hardware, including the cross-over brackets for the central stacking pipe, is made from Type 316 marine-grade stainless steel. To further ensure longevity, the entire assembly is finished with a protective powder coating that shields the aluminum from UV radiation and acidic salt spray.
Performance and Efficiency
With a 15 dBi gain and a Front-to-Back ratio of 18 dB, the ADY-156-162 excels at long-distance signal projection while rejecting unwanted interference from the rear. It handles up to 250 Watts of RF power, making it suitable for high-capacity base stations. The antenna is designed for logistical efficiency; elements are removable for compact shipping and can be reassembled on-site using simple hand tools. This makes it an ideal choice for rapid deployment in search and rescue (SAR) operations and maritime emergency response.
Key Technical Features
- Extreme Gain: 15 dBi output for ultra-long-range VHF maritime links.
- Dual Stacked System: Includes two Yagi booms, stacking pipe, power divider, and phasing harness.
- High-Quality Materials: 6063T6 Aluminum and 316 Stainless Steel for maximum corrosion resistance.
- Low VSWR: Optimized feed design maintains a ratio of better than 1.5:1 across the 6 MHz band.
- Polarization Flexibility: Can be mounted for either vertical or horizontal signal polarization.
- High Power Handling: Rated for 250 Watts continuous RF power.
- Robust Wind Loading: Engineered to withstand wind speeds up to 190 Km/Hr.
Regulatory Compliance & Standards
- CE Certified: Meets all mandatory European safety and environmental standards.
- RoHS Compliant: Free from hazardous materials (Lead, Mercury, Cadmium).
- WEEE Directive: Fully compliant with EU electronic waste disposal regulations.
- GMDSS Ready: Specifically designed for Global Maritime Distress and Safety System integration.
Key Advantages
- Extended Reach: Dramatic increase in communication range compared to standard omni or single Yagi antennas.
- Directional Precision: High Front-to-Back ratio minimizes co-channel interference from other directions.
- All-Weather Reliability: Powder-coated finish and marine-grade hardware ensure 24/7 operation in 100% humidity.
- Simple Field Assembly: Modular design allows for easy transportation and fast setup without specialized equipment.
Key Antenna Applications
- GMDSS Base Stations: Enhancing maritime safety and emergency rescue coordination.
- Coastal Surveillance: Long-range tracking and communication for port security and border control.
- Shore-to-Ship Links: High-intensity directional links for remote maritime outposts.
- AIS Reception: Boosting the range of Automatic Identification System data collection over large sea areas.
Design Features : Antenna Experts dual stacked yagi antenna design reflects innovative modern antenna construction and designed to increase 3dBi gain in same direction. 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. A cross-over mounting bracket is also supplied with the antenna to mount the central stacking pipe of dual antenna on mast/tower. 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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