AC3-127
VHF Naval Shipboard Omni Antenna
| Model | Product Description | Frequency | Gain | Download | Enquiry | |
|---|---|---|---|---|---|---|
| AC3-127 | VHF Naval Shipboard Omni Antenna | 118-137MHz | 3 dBi |  |  |  |
AC3-127: High-Gain VHF Aviation Band Omni-Directional Dipole Antenna
The AC3-127 is a high-performance, 3 dBi gain omni-directional dipole antenna designed for the 118–137 MHz VHF aviation band. Engineered for mission-critical ATC ground-to-air communication, it features a rugged 6063T6 aluminum construction housed in a weather-resistant ABS radome. This MIL-STD-810G compliant antenna is factory-tuned for a low VSWR (<1.5:1), handles up to 500 Watts, and can be assembled in under two minutes. Its epoxy powder-coated finish and marine-grade hardware ensure survivability in extreme coastal, desert, and high-wind environments (up to 220 Km/Hr).
Design Innovation
The AC3-127 is an advanced omni-directional VHF aviation band dipole antenna engineered for mission-critical ground-to-air and ground-to-ground communications. Operating within the 117.975–137 MHz frequency range, this antenna features a sophisticated coaxial dipole design that ensures a stable radiation pattern across the entire bandwidth. Its compact, aerodynamic profile is specifically designed to minimize wind resistance while providing a broad vertical beam-width of 80 degrees, allowing for seamless contact with aircraft at various altitudes and distances without the signal drop-off common in standard dipole configurations.
Precision Fabrication
Constructed using 6063T6 ultra-corrosion-resistant architectural aluminum alloy, the AC3-127 is built to withstand the harshest environmental stressors. The radiating elements are housed within a high-strength ABS radome that offers superior RF transparency and structural integrity. Every metallic component is treated with an olive green epoxy-based powder coating, providing a robust shield against ultraviolet radiation, salt spray, and acid rain. The antenna is supplied with marine-grade stainless steel mounting hardware and a unique stud system that allows for tool-free assembly in under two minutes, making it ideal for rapid deployment.
Optimized Performance
Performance is defined by a consistent 3 dBi gain and an impressive VSWR of better than 1.5:1 across the entire aviation band. Unlike traditional antennas that may require manual tuning, the AC3-127 is factory-optimized for "plug-and-play" operation. With a power handling capacity of 500 Watts, it is capable of supporting high-intensity ATC broadcast requirements. The enclosure’s cylindrical geometry not only provides an aesthetically pleasing look but also prevents ice formation and reduces wind loading to a rating of 220 Km/Hr, ensuring uninterrupted performance during severe weather events.
Key Technical Features
- Optimized Bandwidth: Full coverage of the 117.975–137 MHz aviation spectrum.
- High Gain & Efficiency: Provides a constant 3 dBi gain for extended communication range.
- Ruggedized Radome: High-strength ABS tube protection against physical impact and extreme weather.
- Low VSWR: Maintained at 1.5:1 or better, ensuring maximum power transfer and equipment safety.
- Weatherproof Architecture: Internal termination and feed cable protection inside the mounting pipe.
- Rapid Deployment: Modular design allows for assembly in less than 2 minutes.
- High Power Handling: Rated for 500 Watts continuous RF power.
Regulatory Compliance & Standards
The AC3-127 adheres to the highest international engineering and environmental mandates:
- MIL-STD-810G Compliance: Rigorously tested for High/Low Temperature, Humidity, Shock, Vibration, Rain, Fungus, and Salt Fog (Methods 500.5 through 516.6).
- CE Certified: Fully compliant with European safety and electromagnetic compatibility standards.
- RoHS & WEEE: Manufactured using lead-free, environmentally friendly processes and compliant with EU waste directives for sustainable end-of-life disposal.
Key Advantages
- Maintenance-Free Operation: No field tuning or adjustments required throughout its operational life.
- Extreme Durability: Engineered for coastal, desert, and arctic environments with epoxy powder coating.
- Logistical Efficiency: Compact shipping length (0.9m) significantly reduces transportation costs compared to fixed-length dipoles.
- Superior Signal Clarity: Large diameter radiating elements provide a cleaner elevation pattern than discone alternatives.
Key Antenna Applications
- Air Traffic Control (ATC): Primary communication link for civilian and military tower operations.
- Ground-to-Air Radio Links: Reliable voice and data transmission for flight services.
- Marine Aviation: Suitable for shipboard or coastal installations due to marine-grade materials.
- Remote Airport Terminals: Easy-to-install solution for regional airstrips and helipads.
Heavy-Duty Engineering: The AC3-127 Omni-directional VHF Aviation Antenna is a ruggedized, all-weather solution optimized for high-reliability air traffic control (ATC) ground-to-air and ground-to-ground communications. Built from ultra-corrosion-resistant 6063T6 architectural aluminum alloy and protected by a durable ABS radome, this compact antenna minimizes logistics footprints while completely eliminating the need for complex multi-antenna arrays or field tuning. For enhanced environmental protection, the antenna termination and coaxial feed cable are entirely concealed within the heavy-duty mounting pipe, while all exposed metallic components feature a premium powder-coated finish. The system is engineered for rapid deployment, allowing full assembly of the dismantled components via a robust stainless steel stud system in less than two minutes. Optimized Radiation: Operating across the unified 117–137 MHz frequency spectrum, this aviation base station antenna features large-diameter vertically stacked radiating elements housed within a high-strength, RF-transparent fiberglass enclosure. Leveraging advanced "Impedance Matching" engineering, the design maintains a highly stable VSWR and a consistent 3 dBi gain across the entire band. This optimized architecture ensures a uniform 76-degree vertical beamwidth, providing predictable, wide-area signal propagation over rugged terrain and coastal zones. The system comes complete with marine-grade stainless steel mounting hardware to withstand extreme wind loading and severe environmental degradation.
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