SD12-160
High Gain Marine Band Stacked Dipole
| Model | Product Description | Frequency | Gain | Download | Enquiry | |
|---|---|---|---|---|---|---|
| SD12-160 | High Gain Marine Band Stacked Dipole | 155-165MHz | 12 dBd. |  |  |  |
SD12-160: Ultra High-Gain AIS Marine Band Stacked Dipole Array
The SD12-160 is a professional-grade, high-performance VHF marine band antenna array specifically engineered for AIS (Automatic Identification System) base stations and Vessel Traffic Services (VTS). Delivering an exceptional 12 dBd (14.15 dBi) gain, this stacked dipole array is designed to provide extensive coverage for identifying and locating vessels over vast oceanic regions. Its ultra-wide horizontal beam-width and null-filling characteristics make it the gold standard for mission-critical maritime surveillance.
Design and Oceanic Coverage
The SD12-160 features a sophisticated array of eight folded dipoles stacked vertically. A precision-engineered, center-fed phasing harness ensures that all eight dipoles receive equal, in-phase signals, resulting in a highly concentrated vertical beam-width of 9 degrees. This design focuses energy toward the horizon, while the 180-degree horizontal beam-width provides massive sector coverage, making it ideal for monitoring inbound and outbound oceanic traffic in large Information Regions. The system is factory-adjusted for peak efficiency, ensuring constant gain and a low VSWR across the entire 155–165 MHz bandwidth.
Fabrication and Structural Integrity
To survive the rigors of long-term maritime deployment, the SD12-160 is constructed from 6063T6 ultra-corrosion-resistant architectural anodized aluminum. The 12-meter central mast is shipped in four 3-meter sections to simplify logistics and transportation. All dipole connections and center-fed ends are sealed in high-grade weatherproof epoxy, providing both environmental protection and structural rigidity. The N-Female termination is further secured with flame-retardant heat-shrinking tubing to prevent water ingress in 95% humidity environments.
Performance and Safety Features
With a massive 500 Watts power handling capacity, the SD12-160 is built for high-traffic AIS broadcasting stations. A key safety feature is its D.C. Ground operation; the antenna's aluminum support boom offers a low-resistance path to discharge lightning strikes directly to the ground, protecting sensitive radio equipment during stormy weather. This combination of high-gain performance and rugged electrical protection makes it the preferred choice for shore-based AIS stations communicating with ships and satellites.
Key Technical Features
- Ultra High Gain: 12 dBd (14.15 dBi) for maximum AIS data link range.
- Optimized for AIS: Designed specifically for high-efficiency data exchange between ships and VTS.
- 8-Dipole Stacked Array: Vertically stacked folded dipoles for high directive efficiency.
- Broad Sector Coverage: 180-degree horizontal beam-width for wide oceanic monitoring.
- Heavy-Duty Construction: Anodized 6063T6 aluminum and marine-grade stainless steel hardware.
- Lightning Protection: Operates at D.C. ground to safeguard base station electronics.
- Modular Mast Design: 12-meter overall length shipped in 3-meter segments for easier handling.
Regulatory Compliance & Standards
- CE Certified: Meets all European health and safety requirements for radio equipment.
- RoHS Compliant: Manufactured without hazardous substances like lead or mercury.
- WEEE Directive: Adheres to EU protocols for sustainable electronic waste management.
- AIS Standard Integration: Fully compatible with VDL (VHF Data Link) packet broadcasting systems.
Key Advantages
- Superior Situational Awareness: Enhances collision avoidance by providing high-gain reception of distant AIS signals.
- Extreme Weather Survivability: Rated for 180 Km/Hr wind speeds and temperatures down to -30°C.
- Low Maintenance: Fully sealed connections and corrosion-resistant alloys require zero field tuning.
- Logistical Efficiency: Segmented mast design significantly reduces shipping volume and costs.
Key Antenna Applications
- AIS Base Stations: Primary radio link for shore-based Automatic Identification Systems.
- Vessel Traffic Services (VTS): Coordinating ship movements in busy harbors and channels.
- Oceanic Information Centers: Monitoring international waters and maritime borders.
- Navigation Aids: Providing electronic data for buoys and remote lighting systems.
Design Features : The SD12-160 ultra high performance VHF marine band stacked dipole array is specially designed as AIS base station antenna for AIS Automatic Identification Systems covering entire VHF marine band. The SD12-160 is heavy duty AIS stacked dipole array features, wide bandwidth, high gain, high power handling capacity, low VSWR, low noise performance and null filling coverage with omni-directional characteristics. This AIS stacked dipole array maintains constant gain and VSWR over its 10 MHz bandwidth, making it highly suitable as base station antennas for AIS automatic identification systems used on ships and by vessel traffic services (VTS) for identifying and locating vessels by electronically exchanging data with other nearby ships, AIS base stations, and satellites and any other multi-channel communication systems. The wider 180 Degrees horizontal beam-width with high gain features making the AIS antenna highly suitable for Oceanic Information Region to control the inbound and outbound Oceanic traffic. The Vertical stacking distance is factory adjusted for highest possible efficiency. Specially designed center fed phasing harness ensures equal and in phase signal distribution to all the eight dipoles. The SD12-160 High gain stacked dipole array operates at D.C. ground for protection against lightning.
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||
