AC9-450
UHF High Gain Fiber Glass Collinear
| Model | Product Description | Frequency | Gain | Download | Enquiry | |
|---|---|---|---|---|---|---|
| AC9-450 | UHF High Gain Fiber Glass Collinear | 406-512MHz | 9 dBi. |  |  |  |
The AC9-450 is a professional-grade UHF fiberglass omnidirectional collinear antenna engineered for the 406–512 MHz frequency range. This high-gain model is designed for high-reliability base station applications, featuring a specialized center-fed design housed within a ruggedized fiberglass radome. It provides a balanced combination of a 9 dBi gain and an 18-degree vertical beam-width, making it ideal for regional repeaters and paging sites.
Precision Omnidirectional Coverage
The AC9-450 is engineered with a center-fed architecture, which is critical for maintaining pattern symmetry across the UHF band. Unlike base-fed models that can suffer from pattern "tilt" or distortion, this design ensures a true, distortion-free 360 degrees horizontal radiation pattern. The internal array consists of large-diameter brass radiating elements stacked vertically and fed in phase to achieve a constant 9 dBi gain.
Advanced Structural Hardening
Constructed from 6063T6 ultra-corrosion-resistant architectural aluminum and high-class brass alloys, the antenna is built for long-term survival. The aluminum support pipe is finished with an epoxy-based powder coating for enhanced protection against severe environmental conditions. All internal junctions are fully welded to prevent RF inter-modulation, ensuring a clean signal even at sites with high RF density.
Maintenance-Free Reliability
The antenna requires no field tuning or adjustments. Factory-optimized stub matching ensures a smooth VSWR of better than 1.5:1 across its 25 MHz bandwidth. The internal radiating elements are completely protected within a high-tech ruggedized fiberglass radome, which is RF-transparent and strong enough to withstand wind loads up to 200 Km/Hr.
| Feature | Specification | Tactical Benefit |
|---|---|---|
| Gain | 9 dBi | Balanced reach for regional omni coverage. |
| Wind Rating | 200 Km/Hr | Stays operational in hurricane-force conditions. |
| Power Handling | 250 Watts | Supports high-capacity multi-transmitter sites. |
| Finish | Epoxy Powder Coated | Enhanced protection in severe environmental conditions. |
Detailed Technical Features
- Strategic Gain: Constant 9 dBi omnidirectional gain for reliable regional signal penetration.
- Vertical Directivity: 18-degree half-power vertical beam-width maximizes energy toward the horizon.
- Stable VSWR: Maintains a VSWR of better than 1.5:1 across the operational window.
- Power Capacity: Supports continuous RF power handling of up to 250 Watts.
- Phasing Integrity: Center-fed design ensures a distortion-free, circular horizontal radiation pattern.
Detailed Mechanical Features
- Radiating Elements: High-grade, large-diameter brass elements stacked for peak aperture efficiency.
- Structural Length: 2.6-meter (approx. 8.5 feet) overall length provides a high-profile transmission platform.
- Radome Build: 45 mm O.D. high-strength fiberglass enclosure with a 51 mm O.D. aluminum support pipe.
- Elite Fasteners: Supplied with Type 316 Marine Grade Stainless Steel mounting hardware.
- Mounting Interface: Clamps securely to vertical masts up to 51 mm (2 inches) in diameter.
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.
- Climate Defense: Epoxy-based powder coating and fiberglass radome provide a hermetic seal against ice, rain, and corrosive pollutants.
- Humidity Tolerance: Certified for operation in 0 to 95% RH environments.
Key Advantages
- Pattern Purity: The center-fed design guarantees a perfectly circular $360^{\circ}$ footprint, essential for central network nodes.
- Corrosion Resistance: The combination of 6063T6 aluminum, epoxy coating, and 316 stainless steel hardware ensures a long life in coastal or industrial zones.
- Rapid Deployment: Lightweight design and factory tuning allow for quick installation without the need for specialized field equipment.
Primary Applications
- UHF Repeater Hubs: Strategic backbone for municipal and regional UHF voice networks.
- Public Safety Infrastructure: Reliable omnidirectional coverage for emergency services and first responders.
- Regional Paging Systems: Consistent high-gain distribution for mission-critical paging infrastructure.
- Tactical Command Posts: Durable, high-gain solution for semi-permanent or fixed military UHF nodes.
Design Features : AC9-450 UHF Fiberglass Omni-directional Collinear Antenna is rugged all weather model uses high class brass and aluminum alloy and does not require any field tuning or adjustments. All junctions are fully welded to prevent RF inter-modulation and antenna is completely protected within a high-tech ruggedized radome to ensure survivability in the worst environments. The compact size of fiber glass collinear antenna allows easy handling and shipping.
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