AY-312-16

The AY-312-16 is a strategic, ultra-high-gain 8-stacked yagi array system specifically engineered for long-range UHF Aviation Band (225–400 MHz) applications. Delivering a massive 16 dBi gain, this system is the premier choice for ATC sites requiring deep-range coverage for Oceanic Information Regions (OIC) to manage long-distance inbound and outbound aircraft traffic.

Performance and Precision

The AY-312-16 is designed for "extended range" missions where standard antennas fall short. By stacking eight 3-element yagi antennas, the system achieves a highly focused 12-degree vertical beam-width, which concentrates energy toward the horizon for long-distance links. Uniquely, it maintains a wide 110-degree horizontal beam-width, allowing for broad sectoral coverage. The factory-tuned system features a unique feed design that acts as a matching device, ensuring a superior VSWR of 1:1.5 for maximum transmission efficiency.

Rugged Construction and Durability

Constructed from 6063T6 architectural-grade anodized aluminum alloy, this array is built to survive severe coastal and oceanic environments. Every component, including the radiating elements, support booms, and metal castings, is designed to prevent corrosion. The entire system is finished with a protective powder coating and utilizes marine-grade stainless steel hardware. Its structural design is certified to survive hurricane-force winds up to 200 KMPH.

Strategic Efficiency

The system utilizes a sophisticated RF distribution network, including two 4-way power splitters, one 2-way power splitter, and ten low-loss phasing harness cables. Despite its 7-meter aperture requirement, the system is designed for logistical ease; elements are removable for transport, and the entire array can be assembled on-site using simple hand tools. It supports high-power transmitters up to 1000 Watts, making it ideal for high-intensity strategic hubs.

Detailed Technical Features

• Strategic Gain: Massive 16 dBi gain provides the link margin necessary for "deep oceanic" aircraft tracking.
• Vertical Power Focusing: A narrow 12° vertical beam-width minimizes ground-reflection interference and maximizes long-distance reach.
• Wide Sectoral Coverage: A 110° horizontal beam-width allows the station to monitor a wide slice of the oceanic corridor without rotating the antenna.
• High-Power Capacity: Standard support for 1000 Watts, allowing for high-intensity signal penetration.
• Superior Isolation: A 24 dB Front-to-Back ratio ensures the system ignores noise and signals from the rear.
• RF Purity: Air-cored solid power splitters/combiners ensure low insertion loss and high phase stability.

Detailed Mechanical Features

• Array Composition: Consists of eight high-quality 3-element yagi antennas.
• Marine-Grade Hardware: All fasteners and brackets are manufactured from Type 316 stainless steel.
• Heavy-Duty Booms: 25 mm diameter aluminum support booms provide rigid structural integrity.
• Precision Elements: 12 mm diameter aluminum elements optimized for the 225-400 MHz band.
• System Weight: 30 Kgs (Gross), designed for mounting on heavy-duty vertical towers.
• Aperture Requirement: Requires a minimum of 7 meters of mast space for optimal stacking performance.

Detailed Environmental Features

• Extreme Temperature Range: Operational from -30°C to +70°C; storage rated up to +80°C.
• Oceanic Resilience: Specifically treated to resist salt-spray corrosion and high-humidity oceanic environments (0-95% RH).
• Wind Stability: Rated for 200 KMPH, ensuring alignment is maintained during severe storm events.
• Lightning Protection: The D.C. grounded design provides a safe path for static discharge and lightning transients.

Key Advantages

• Extended Reach: Specifically designed to extend the "Information Region" (OIC) for ATC, reaching aircraft much further than standard dipoles or single yagis.
• Zero Field Tuning: Factory-tuned architecture ensures the system is ready for immediate operation upon assembly.
• High Efficiency: Low VSWR (1:1.5) ensures that nearly 100% of the transmitter power is radiated, protecting equipment from heat and damage.

Key Strategic Benefits

• Oceanic Safety: Enables ATC centers to maintain consistent contact with aircraft over deep water, where infrastructure is non-existent.
• Logistical Ease: Removable elements and a 0.70m shipping length allow this massive array to be transported via standard air or sea freight.
• Long-Term ROI: The combination of 6063T6 aluminum and epoxy powder coating ensures a service life measured in decades, even in coastal areas.

Primary Applications

• Oceanic ATC Hubs: Controlling inbound/outbound international oceanic air traffic.
• Strategic Military Airfields: Providing long-distance ground-to-air links for high-altitude military assets.
• Long-Range Signal Intelligence: Directional capture of weak UHF signals from distant aeronautical sources.
• Coastal Surveillance: Monitoring aircraft and shipboard UHF communications along national borders.