AC6-250
UHF High Gain Fiber Glass Collinear
| Model | Product Description | Frequency | Gain | Download | Enquiry | |
|---|---|---|---|---|---|---|
| AC6-250 | UHF High Gain Fiber Glass Collinear | 220–290MHz | 6 dBd. |  |  |  |
The AC6-250 is a professional-grade VHF omni-directional collinear antenna designed for the 220–300 MHz frequency range. Engineered for high-reliability base station applications, this antenna utilizes a center-fed design housed within a ruggedized fiberglass radome. With full MIL-STD-810G environmental hardening, it is built to provide consistent, long-range coverage in the most demanding operational environments.
Precision Omni-Directional Coverage
The AC6-250 is engineered with a center-fed architecture, which is critical for maintaining pattern symmetry. Unlike base-fed models that can suffer from pattern "tilt," this design ensures a true, distortion-free $360^{\circ}$ horizontal radiation pattern. The internal array consists of large-diameter brass radiating elements stacked vertically and fed in phase to achieve a 6 dBd (8.15 dBi) gain, focusing signal energy into a 20-degree vertical beam-width for optimal horizon reach.
Tactical Structural Hardening
The antenna is constructed from high-class brass and 6063T6 ultra-corrosion-resistant aluminum alloy. All internal junctions are fully welded to prevent passive inter-modulation (PIM), ensuring a clean signal even at sites with high RF density. The entire internal structure is protected by a high-tech fiberglass radome, which offers excellent RF transparency and structural strength to survive extreme weather.
MIL-SPEC Environmental Resilience
This model is fully hardened and tested against MIL-STD-810G standards. It is resistant to salt fog, fungus, driving rain, and extreme thermal stress. The mechanical integrity is further verified through high-intensity shock and vibration testing, making it suitable for deployment in forward operating bases or harsh industrial coastal zones.
| Feature | Specification | Tactical Benefit |
|---|---|---|
| Gain | 6 dBd (8.15 dBi) | Balanced reach for regional omni coverage. |
| Environmental | MIL-STD-810G Certified | Maximum durability in extreme operational theaters. |
| 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
- Optimized Gain: Constant 6 dBd (8.15 dBi) omnidirectional gain for reliable regional coverage.
- Vertical Directivity: 20-degree half-power vertical beam-width maximizes signal density at the horizon.
- Stable VSWR: Factory-set stub matching ensures a VSWR of better than 1.5:1 without field tuning.
- 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.
- Overall Length: 2.8 meters (approx. 9.2 feet) for a high-profile transmission platform.
- Radome Build: 44 mm O.D. fiberglass enclosure with a 51 mm O.D. aluminum support pipe.
- Elite Fasteners: Supplied with Marine Grade Stainless Steel mounting hardware.
- Mounting Interface: Clamps securely to vertical masts up to 51 mm (2 inches) in diameter.
Detailed Environmental Features (MIL-STD-810G)
- Theater Hardening: Certified against Salt Fog (Method 509.5) and Fungus Resistance (Method 508.6).
- Thermal Endurance: Maintains operation in extreme High/Low Temperatures (Methods 500.5 & 502.5).
- Climate Defense: Advanced sealing for Humidity (507.5) and heavy Rain (506.5).
- Mechanical Rigidity: High resistance to Shock (Method 516.6) and Vibration (Method 514.6).
- Wind Survival: Rated for hurricane-force winds up to 200 Km/Hr.
Key Advantages
- True Signal Integrity: The center-fed design guarantees a perfectly circular $360^{\circ}$ footprint, essential for central nodes.
- Maintenance-Free: No field tuning or adjustments are required; the fully welded internal structure prevents performance drift.
- Combat-Proven Durability: MIL-STD-810G certification ensures the antenna will not fail in corrosive or high-vibration theaters.
Primary Applications
- VHF Base Stations: High-reliability backbone for regional voice and data networks in the 220–300 MHz band.
- Public Safety Networks: Consistent omni-directional coverage for first responders and emergency services.
- Tactical Command Posts: Ruggedized, lightweight design is ideal for rapid-deployment masts and command centers.
- Industrial Coastal Sites: Specialized hardening makes it perfect for maritime port authority and offshore monitoring.
Design Features : AC6-250 Fiberglass Omni-directional Collinear Antenna is VHF band, 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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