AC3-150
VHF High Gain Fiber Glass Collinear
| Model | Product Description | Frequency | Gain | Download | Enquiry | |
|---|---|---|---|---|---|---|
| AC3-150 | VHF High Gain Fiber Glass Collinear | 134-174MHz | 3 dBi. |  |  |  |
The AC3-150 is a professional, marine-grade VHF omnidirectional collinear antenna designed for the 134–174 MHz band. Built for resilience in the most demanding maritime and tactical environments, this antenna features a center-fed design housed in a ruggedized, UV-resistant ABS radome. Its balanced performance and wide vertical aperture make it an ideal choice for ship-to-ship, ship-to-shore, and regional base station communications.
Optimized Wide-Aperture Coverage
The AC3-150 provides a constant 3 dBi gain with an exceptionally wide 78-degree vertical beam-width. This wide vertical aperture is specifically beneficial for marine applications, as it maintains consistent communication even when a vessel is pitching or rolling in heavy seas—conditions where a narrower beam would lose the signal link.
Marine-Grade Engineering
Constructed from high-class brass radiating elements and 6063T6 ultra-corrosion-resistant aluminum alloy, the AC3-150 is built to withstand saline environments. All internal junctions are fully welded to prevent RF inter-modulation (PIM), ensuring long-term signal purity. The center-fed design eliminates pattern distortion, providing a true 360 degrees horizontal footprint.
Tactical Structural Hardening
The antenna is encased in a high-tech ruggedized ABS radome that is both RF-transparent and UV-resistant. This enclosure protects the array from the "worst-case" environments, including acid rain and extreme sunlight. With a wind rating of 210 Km/Hr, it remains stable during hurricane-force conditions. The standard finish is a military Olive Green, though custom colors are available for specific vessel or site requirements.
Performance Summery
| Feature | Specification | Tactical Benefit |
|---|---|---|
| Gain | 3 dBi | Reliable regional omni coverage. |
| Vertical Beam | 78 Degrees | Maintains link during vessel pitch and roll. |
| Wind Rating | 210 Km/Hr | Stays operational in hurricane-force conditions. |
| Material | UV Resistant ABS | Maximum durability in harsh sunlight and salt spray. |
Detailed Technical Features
- Balanced Gain: Constant 3 dBi omnidirectional gain for dependable regional signal coverage.
- Vertical Beam Efficiency: Wide 78-degree vertical beam-width ensures signal stability on moving platforms (vessels/vehicles).
- Stable VSWR: Factory-set stub matching ensures a VSWR of better than 1.5:1 across the 8 MHz bandwidth.
- Power Capacity: Supports continuous RF power handling of up to 150 Watts.
- Phasing Accuracy: Elements are vertically stacked and fed in phase for maximum aperture efficiency.
Detailed Mechanical Features
- Radiating Elements: High-quality, large-diameter brass for superior conductivity and longevity.
- Compact Footprint: Overall length of 1.6 meters (5.2 feet) for easy handling and low wind loading.
- Support Framework: 38 mm O.D. 6063T6 aluminum pipe with a 44 mm O.D. UV-resistant ABS radome.
- Elite Fasteners: Supplied with high-grade Stainless Steel mounting hardware for masts up to 45 mm (1.75 inches).
- Logistics: Lightweight design at just 3 Kgs (Gross) allows for rapid deployment and easy shipping.
Detailed Environmental Features
- Marine Resilience: Materials specifically selected for salt-spray and high-humidity environments.
- Wind Survival: Rated for extreme conditions up to 210 Km/Hr (130 MPH).
- Thermal Window: Operational in extreme climates from -30°C to +70°C.
- Weather Protection: The antenna termination is enclosed at the bottom of the structure for a complete seal against the elements.
Key Advantages
- Pitch/Roll Stability: The 78-degree vertical beam prevents signal dropout on swaying masts or rolling ships.
- Maintenance-Free: No field tuning or adjustments are required; the fully welded internal structure prevents performance drift.
- Corrosion Defense: The combination of anodized aluminum and UV-resistant ABS ensures a long service life in coastal zones.
Primary Applications
- Marine Communications: Ship-to-ship and ship-to-shore VHF links for commercial or military vessels.
- Tactical Command Posts: Lightweight, olive-green design is perfect for rapid-deployment vehicle masts.
- Coastal Base Stations: Reliable omnidirectional coverage for port authority and maritime security.
- PMR and Repeater Sites: Ideal for regional voice and data networks in the 150 MHz band.
Design Features : AC3-150 VHF 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 ABS radome to ensure survivability in the worst environments. The UV resistant ABS enclosure has excellent transparency for RF signals and enough strength to withstand specified wind loads. The compact size of collinear antenna allows easy handling and shipping.
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