SD6-450
UHF High Gain Stacked Dipole Array
| Model | Product Description | Frequency | Gain | Download | Enquiry | |
|---|---|---|---|---|---|---|
| SD6-450 | UHF High Gain Stacked Dipole Array | 406 – 512 MHz. | 6 dBd. |  |  |  |
The SD6-450 is a versatile, high-performance UHF stacked dipole array designed for the 330–512 MHz frequency range. Featuring four vertically stacked folded dipoles, this antenna is engineered to provide long-haul coverage in highly populated radio environments. With its 60 MHz bandwidth and flexible radiation patterns, it serves as a robust foundation for UHF repeaters, paging sites, and multi-channel base station applications.
Field-Configurable Radiation Patterns
The SD6-450 offers industry-leading versatility through its adjustable configuration. Technicians can optimize coverage in the field using common hand tools:
- Omni-Directional (6 dBd): Arrange dipoles 90° apart for full 360 degrees coverage.
- Offset Directional (9 dBd): Align dipoles collinearly to focus energy toward a specific sector.
- Bi-Directional: Align dipoles 180° apart to cover linear paths like corridors or transit lines.
Precision Engineering & Low Loss
The array features a center-fed phasing harness designed for perfect signal synchronization. To maximize efficiency, all power splitter joints are molded, eliminating the need for extra connectors or adapters. This design choice significantly reduces signal loss and removes potential points of water ingress, ensuring the 1.5:1 VSWR remains stable across the wide 60 MHz operational window.
Tactical Construction
Built from high-strength 6063T6 architectural-grade aluminum, the SD6-450 is rated for wind speeds up to 200 Km/Hr. At a total length of 2.6 meters and a weight of just 10 Kg, it offers a high gain-to-weight ratio, making it an excellent choice for sites with limited tower loading capacity. The entire structure is D.C. grounded, providing built-in lightning protection for sensitive radio equipment.
| Feature | Specification | Tactical Benefit |
|---|---|---|
| Gain | 6 dBd (Omni) / 9 dBd (Offset) | Adaptable coverage for varying geography. |
| Bandwidth | 60 MHz | Supports wide-band and multi-channel systems. |
| Vertical Beam | 18 Degrees | Efficient horizon reach; reduced sky-waste. |
| Weight | 10 Kg | Easy installation; low structural tower load. |
Detailed Technical Features
- Triple-Mode Pattern: Configurable for Omni (6 dBd), Offset (9 dBd), or Bi-Directional coverage.
- Wide Bandwidth: Supports a 60 MHz range, ideal for multi-frequency trunking systems.
- Vertical Beam Efficiency: 18-degree half-power vertical beam-width focuses energy at the horizon.
- High Power Handling: Supports continuous RF power up to 250 Watts.
- Phasing Accuracy: Molded splitter joints ensure equal in-phase signal distribution to all four dipoles.
Detailed Mechanical Features
- Compact Profile: Overall length of 2.6 meters with a 51 mm O.D. central mast.
- Resilient Materials: 12.7 mm O.D. folded dipoles made of corrosion-resistant aluminum.
- Flexible Mounting: Supplied with top mounting hardware; optional 1.35-meter (4.5 feet) side-mount arms available for tower clearance.
- Hardware Quality: All mounting fasteners and brackets are manufactured from Marine Grade Stainless Steel.
- Portability: Gross weight of approximately 10 Kg for easy handling and installation.
Detailed Environmental Features
- Hurricane Rating: Wind survival certified up to 200 Km/Hr (125 MPH).
- Hermetic Sealing: Phasing harness termination is sealed with heat-shrink tubing for total waterproofing.
- Thermal Range: Operational in extreme climates from -30°C to +70°C.
- Lightning Safety: Integrated direct D.C. ground path protects the entire site infrastructure.
Key Advantages
- Pattern Adaptability: The ability to switch between three radiation patterns allows for massive site-specific optimization.
- Low Maintenance: Molded joints and stainless steel hardware prevent oxidation and failure in high-humidity zones.
- Optimized for Crowded Sites: Low noise performance and high interference rejection make it ideal for sites with high RF density.
Primary Applications
- UHF Repeater Hubs: Strategic backbone for police, fire, and municipal UHF voice networks.
- Commercial Trunking Systems: Wide bandwidth supports multiple digital radio channels.
- Paging Infrastructure: Reliable high-power signal penetration for urban paging networks.
- Linear Coverage: Bi-directional mode is perfect for mountain ridges, highways, or railway corridors.
Design Features:The SD6-450 high performance UHF stacked dipole array is designed for use with highly populated radio sites requiring long haul omni directional coverage. The SD6-450 is heavy duty stacked dipole array features, wide bandwidth, high gain, high power handling capacity, low VSWR, low noise performance and null filling coverage with omni directional characteristics. This stacked dipole array is highly suitable as base station antennas for Repeater and Paging sites.
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