YR-575
Digital TV Gap-Filler Yagi Antenna With Reflector
| Model | Product Description | Frequency | Gain | Download | Enquiry | |
|---|---|---|---|---|---|---|
| YR-575 | Digital TV Gap-Filler Yagi Antenna With Reflector | 518-630MHz | 13 dBi. |  |  |  |
The YR-575 is a professional-grade, directional Yagi antenna with an integrated grid reflector, specifically engineered for Digital TV Gap-Filler (Re-emitter) and power repeater applications. Operating in the 518–630 MHz UHF band, it provides a specialized solution for eliminating "blind zones" and signal shadows in complex topographies. By combining a precision Yagi array with a rear grid reflector, this model delivers an elite 13 dBi gain and exceptional interference rejection.
Advanced Gap-Filler Optimization
The YR-575 is designed to solve coverage challenges in expressways, tunnels, railways, and multi-story buildings. The integrated grid reflector is a critical feature; it significantly increases the Front-to-Back ratio to 22 dB and suppresses side lobes. This high directivity is essential for gap-fillers to prevent self-oscillation and ensure that the re-emitted signal does not interfere with the primary donor signal.
Precision Signal Engineering
Featuring a 55-degree horizontal and 45-degree vertical beam-width, the antenna provides a focused aperture for target area illumination. The innovative feed system serves as a matching device that eliminates the need for traditional folded dipoles, resulting in increased radiated efficiency. The antenna is factory-tuned for the entire 518–630 MHz band, covering Digital TV channels 27–40 with a stable 13 dBi (11 dBd) gain.
Ruggedized All-Weather Construction
Constructed from 6063T6 ultra-corrosion-resistant architectural anodized aluminum, the YR-575 is built for permanent outdoor installation in harsh environments. To ensure long-term mechanical integrity, the radiating elements and grid reflector members are permanently welded to the 25.4 mm square support boom. This rigid construction allows the antenna to survive hurricane-force winds up to 200 Km/Hr.
Performance Summary
| Feature | Specification | Tactical Benefit |
|---|---|---|
| Gain | 13 dBi (11 dBd) | High sensitivity for gap-filling re-emissions. |
| F/B Ratio | 22 dB | Prevents interference with primary donor signals. |
| Wind Rating | 200 Km/Hr | Stays operational in extreme weather conditions. |
| MTBF | 90,000 Hours | Decades of reliable infrastructure service. |
Detailed Technical Features
- Strategic Gain: 13 dBi gain provides superior signal penetration for shadowy reception zones.
- Elite Front-to-Back Ratio: 22 dB ratio ensures maximum isolation and prevents rear-signal interference.
- Low VSWR: Optimized matching feed maintains a stable VSWR of better than 2.0:1 across the full band.
- Power Capacity: Supports continuous RF power handling of up to 250 Watts, suitable for low-power re-emitters.
- Polarization Versatility: Optimized for both Vertical and Horizontal polarization depending on the application site.
Detailed Mechanical Features
- Aviation Grade Materials: Built from high-quality aluminum alloys and Marine Grade Stainless Steel hardware.
- Logistical Ease: The grid reflector is supplied in two segments, reducing shipping volume and simplifying field handling.
- Square Boom Rigidity: The 25.4 mm square tube boom prevents element rotation and maintains precision alignment.
- Compact Maneuverability: Overall length of 1.2 meters and a weight of 5 Kgs, conserving tower loading capacity.
- Termination: Industry-standard N-Female connector fixed directly on the driven element for low-loss connectivity.
Detailed Environmental Features
- High Reliability: Features a Calculated Mean Time Between Failures (MTBF) of 90,000 Hours.
- Thermal Hardening: Operational in extreme temperature windows from -30°C to +70°C.
- Corrosion Defense: Anodized aluminum finish protects against salt spray, acid rain, and UV radiation.
- Humidity Tolerance: Certified for operation in 0 to 95% RH environments.
Key Advantages
- Shadow Zone Elimination: Effectively provides signal coverage in tunnels, elevators, and valleys where primary broadcast signals cannot reach.
- Minimal Side Lobes: The grid reflector design ensures signal energy is only directed where needed, reducing noise in the surrounding RF environment.
- Zero Field Maintenance: Factory-welded construction and "plug-and-play" tuning eliminate the need for periodic adjustments.
Primary Applications
- Digital TV Gap-Fillers: Re-emitting DTV signals into blind zones and urban shadowy areas.
- Wireless Re-emitters: Enhancing signal strength inside tunnels, elevators, and large commercial buildings.
- Power Repeater Links: Vertical polarized links for regional signal redistribution.
- Infrastructure Monitoring: Directional high-gain links for railways and expressways.
Design Features: Antenna Experts Digital TV Gap-Filler yagi antenna with reflector design reflects innovative modern antenna construction. The yagi with reflector is highly suitable for vertical polarized power repeater application and low-power horizontal polarized digital TV gap-filler application from channel 27-40. Wireless digital TV gap-filler (Re-emitter) provides effective solutions for blind zones and shadowy zones. Yagi with reflector is mainly used in expressways, railways, tunnels, country sides, homes, multi-stories buildings and elevators. 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 with reflector. The mounting hardware supplied facilitates mounting on either vertical or horizontal members. The grid reflector supplied in two segments for easy of shipping and handling. The yagi with reflector is highly suitable where high front to back ratio and high side lobe suppression are required.
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