AY-550
UHF High Gain Yagi Antenna
| Model | Product Description | Frequency | Gain | Download | Enquiry | |
|---|---|---|---|---|---|---|
| AY-550 | UHF High Gain Yagi Antenna | 512-608MHz | 13 dBi. |  |  |  |
The AY-550 is a professional-grade, high-gain UHF Yagi antenna specifically engineered for the 512–608 MHz frequency range. Delivering a robust 13 dBi (11 dBd) gain, this directional antenna is optimized for long-distance point-to-point links, Digital TV (DTV) reception, and specialized UHF telemetry. Its ruggedized, pre-assembled construction ensures rapid deployment and high survivability in extreme climates.
Precision Directional Focus
The AY-550 provides a sharp, directional signal with a 55-degree horizontal and 45-degree vertical beam-width. This concentrated radiation pattern, combined with a 16 dB Front-to-Back Ratio, ensures that signal energy is precisely targeted toward the intended receiver while effectively rejecting off-axis interference and background noise from the rear.
Innovative Feed Design
Unlike traditional Yagis that rely on folded dipoles, the AY-550 utilizes a specialized matching feed system. This unique design acts as an internal impedance transformer, maintaining high efficiency across the entire 512–608 MHz band. The feed point is encased in a ruggedized Nylon housing, providing a hermetic seal against ice, driving rain, and corrosive atmospheric pollutants while minimizing pattern distortion.
Industrial-Grade Construction
Built for permanent outdoor installation, the antenna is constructed from 6063T6 architectural aluminum alloy. The use of a 25.4 mm square tube boom provides superior structural rigidity and torque resistance compared to round booms, ensuring the elements remain perfectly aligned even under high wind loads. The antenna comes pre-assembled with factory-fixed elements, eliminating field-tuning errors and reducing installation time.
Performance Summary
| Feature | Specification | Tactical Benefit |
|---|---|---|
| Gain | 13 dBi (11 dBd) | Superior reach for long-haul links. |
| Wind Rating | 200 Km/Hr | Stays operational in hurricane conditions. |
| Boom Type | Square Aluminum Tube | Prevents element rotation and alignment shift. |
| Power Handling | 250 Watts | Supports high-capacity multi-transmitter sites. |
Detailed Technical Features
- Strategic Gain: 13 dBi typical gain for superior link margin in the UHF band.
- Broadband Performance: Factory-tuned to cover the entire 512–608 MHz band without adjustments.
- Polarization Versatility: The mounting hardware allows for both Vertical and Horizontal polarization.
- Power Handling: Supports continuous high RF power of up to 250 Watts.
- Signal Purity: Directional pattern minimizes multipath interference in complex topographies.
Detailed Mechanical Features
- Structural Integrity: Radiating elements are permanently fixed to the square aluminum support boom.
- Aerodynamic Profile: Small surface area and low-drag design minimize wind loading on the tower.
- Marine Grade Fasteners: Supplied with Stainless Steel mounting hardware for masts up to 52 mm (2 inches).
- Compact Logistics: Overall length of 1.1 meters and weight of just 2.5 Kgs allows for easy handling and minimal tower loading.
- Termination: Industry-standard N-Female termination for low-loss connectivity.
Detailed Environmental Features
- Hurricane Resilience: Wind survival rating of 200 Km/Hr (125 MPH).
- Thermal Hardening: Operational in extreme climates from -30°C to +70°C.
- Corrosion Resistance: Anodized aluminum alloy prevents oxidation in saline or industrial atmospheres.
- Humidity Tolerance: Certified for operation in 0 to 95% RH environments.
Key Advantages
- "Plug-and-Play" Setup: Factory-fixed elements and pre-tuned matching ensure optimal performance right out of the box.
- Minimal Tower Loading: Lightweight construction and low wind resistance conserve tower capacity and reduce structural stress.
- Climate Defense: Nylon-protected feed and aluminum construction ensure decades of maintenance-free service.
Primary Applications
- Point-to-Point UHF Links: Establishing reliable data backbones over medium-to-long distances.
- Digital TV (DTV) Infrastructure: High-gain reception for fringe areas and professional distribution.
- UHF Telemetry and SCADA: Reliable monitoring for utilities, oil, and gas infrastructure.
- Government & Public Safety: Directive high-gain antenna for secure fixed-station command nodes.
Design Features: Antenna Experts Yagi antenna design reflects innovative modern antenna construction. The unique design of the yagi antenna feed which works as matching device to keep the VSWR low resulting in increased efficiency of the yagi antenna. The mounting hardware supplied facilitates mounting on either vertical or horizontal members. The yagi antenna comes in pre-assembled condition with permanently fixed elements in the support boom. The small surface area on the yagi antenna minimizes wind resistance and conserves tower loading capacity.
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