AC9-350
UHF High Gain Fiber Glass Collinear
| Model | Product Description | Frequency | Gain | Download | Enquiry | |
|---|---|---|---|---|---|---|
| AC9-350 | UHF High Gain Fiber Glass Collinear | 300–400MHz | 9 dBi. |  |  |  |
The AC9-350 is a professional-grade UHF fiberglass omnidirectional collinear antenna engineered for the 300–400 MHz spectrum. This high-gain model is designed for high-reliability base station applications, featuring a specialized center-fed architecture housed within a ruggedized fiberglass radome. With its 9 dBi gain and tactical Olive Green finish, it serves as a robust communications backbone for military and regional UHF networks.
Precision Omnidirectional Coverage
The AC9-350 utilizes vertically stacked, large-diameter brass radiating elements fed in phase to achieve a constant 9 dBi gain. Its center-fed design is a critical engineering feature; unlike base-fed antennas that often suffer from pattern "tilt" or distortion, this design ensures a perfectly symmetrical and true 360 degrees horizontal footprint. With an 18-degree vertical beam-width, the antenna focuses signal energy toward the horizon, maximizing regional reach.
Strategic Structural Hardening
Constructed from 6063T6 ultra-corrosion-resistant architectural aluminum and high-class brass alloys, the antenna is built for long-term survival in hostile environments. All internal junctions are fully welded to prevent RF inter-modulation (PIM), ensuring a clean signal even at sites with high RF density. The entire internal array is protected within a high-tech ruggedized fiberglass radome, which is RF-transparent and strong enough to withstand wind loads up to 200 Km/Hr.
Maintenance-Free Reliability
Designed for "set-and-forget" operation, the AC9-350 requires no field tuning or adjustments. Factory-optimized stub matching ensures a smooth VSWR of better than 1.5:1 across its 20 MHz bandwidth. The antenna termination is enclosed at the bottom for total weather protection, while the stainless steel mounting hardware ensures a secure, oxidation-free installation.
| Feature | Specification | Tactical Benefit |
|---|---|---|
| Gain | 9 dBi | High-gain reach for regional UHF coverage. |
| Vertical Beam | 18 Degrees | Focused horizon reach; reduced signal waste. |
| Wind Rating | 200 Km/Hr | Stays operational in hurricane-force conditions. |
| Pattern | Center-Fed Omni | Distortion-free, perfectly circular 360 degrees footprint. |
Detailed Technical Features
- Strategic Gain: 9 dBi omnidirectional gain for superior signal penetration and link stability.
- Vertical Directivity: 18-degree half-power vertical beam-width focuses RF energy specifically at the horizon.
- Stable VSWR: Maintains a VSWR of better than 1.5:1 across the 20 MHz operational window.
- Power Handling: 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: 2.7-meter (approx. 8.8 feet) overall length provides a high-profile transmission platform.
- Premium Materials: 51 mm O.D. aluminum support pipe and high-strength 45 mm O.D. fiberglass radome.
- Elite Fasteners: Supplied with Stainless Steel mounting hardware for masts up to 51 mm (2 inches).
- Portability: Gross weight of just 5 Kgs, facilitating rapid tactical deployment.
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: High-tech radome provides a hermetic seal against ice, rain, and corrosive pollutants.
- Humidity Tolerance: Certified for operation in 0 to 95% RH environments.
Key Advantages
- True 360 Degrees Signal: The center-fed architecture provides a perfectly circular footprint, essential for central network nodes.
- Tactical Finish: Standard military Olive Green finish supports concealment for defense-related infrastructure.
- Low Maintenance: Fully welded internal junctions and air-sealed radome prevent performance drift and corrosion over time.
Primary Applications
- Regional UHF Backbone: High-gain master antenna for regional voice and data networks in the 300 MHz band.
- Military Command Sites: Ruggedized, tactical design for secure government and defense base stations.
- Public Safety Infrastructure: Reliable omnidirectional coverage for emergency services and first responders.
- Utility and SCADA Networks: Ideal for wide-area monitoring and telemetry in industrial sectors.
Design Features : AC9-150 VHF Fiberglass Omni-directional Collinear Antenna is rugged all weather model uses high class brass and ultra corrosion resistant architectural aluminum alloy and does not require any field tuning or adjustments. The antenna is supplied in two segments for easy of handling and shipping. The upper and lower portion of antenna is threaded together to prevent RF inter-modulation and antenna is completely protected within a high-tech ruggedized radome to ensure survivability in the worst environments. The antenna termination is enclosed at bottom of the antenna for complete weather protection.
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