CD-225-400
UHF Broadband Coaxial Dipole Antenna
| Model | Product Description | Frequency | Gain | Download | Enquiry | |
|---|---|---|---|---|---|---|
| CD-225-400 | UHF Broadband Coaxial Dipole Antenna | 225-400MHz | 3 dBi |  |  |  |
CD-225-400: Professional UHF Aviation Band Coaxial Dipole Antenna
The CD-225-400 is a rugged, wideband omni-directional antenna specifically engineered for the 225–400 MHz UHF military aviation band. Designed for critical Air Traffic Control (ATC) sites, this coaxial dipole antenna provides a unified solution for ground-to-air and ground-to-ground communications. Its robust construction and stable electrical characteristics make it an ideal choice for permanent base stations, shipboard masts, and tactical mobile applications.
Design and Versatility
The CD-225-400 is designed to operate in vertically polarized radio networks, providing a consistent 360-degree horizontal radiation pattern. Enclosed in a high-strength ABS radome, the antenna is aerodynamically optimized for low wind loading and to minimize the accumulation of ice. A standout technical feature is the high suppression of skin current, which ensures a smooth VSWR and reliable pattern integrity across the entire frequency band. This eliminates the need for multiple narrowband antennas, simplifying site architecture and reducing tower load.
Precision Fabrication
Constructed using 6063T6 ultra-corrosion-resistant architectural aluminum alloy, the internal radiating elements are vertically stacked and fully welded to their respective locations. This welding process is critical for preventing RF inter-modulation (PIM) and maintaining structural rigidity. The antenna utilizes a specialized impedance matching technique to deliver constant superior performance. For maximum durability, all mounting hardware is made from Marine Grade Type 316 Stainless Steel, and the N-Female termination is strategically fixed at the bottom of the mounting pipe for complete weather shielding.
Optimized Performance
With a typical gain of 2.15 dBi and a broad vertical beam-width of 78 degrees, the CD-225-400 ensures excellent signal coverage for aircraft at various altitudes and mobile units in the field. It is capable of handling up to 500 Watts of continuous RF power, meeting the high-demand requirements of military and aerospace communication hubs. The antenna is factory-tuned and finished in a standard olive green MIL color, with custom color options available upon request to suit specific environmental or camouflage needs.
Key Technical Features
- Full UHF Aviation Band Coverage: Operates seamlessly across the 225–400 MHz spectrum.
- Skin Current Suppression: Advanced design ensures smooth VSWR and stable signal performance.
- Military-Grade Durability: Fully compliant with MIL-STD-810G environmental testing standards.
- Rugged ABS Radome: UV-resistant enclosure provides superior protection against harsh weather and solar radiation.
- High Power Tolerance: Supports continuous RF transmission at up to 500 Watts.
- Marine-Grade Build: 6063T6 Aluminum and 316 Stainless Steel for extreme coastal and shipboard resilience.
- Low Wind Resistance: Cylindrical design rated for survivability in 200 Km/Hr wind speeds.
Regulatory Compliance & Standards
The CD-225-400 is engineered to meet the highest global standards for safety and reliability:
- MIL-STD-810G Compliance: Rigorously tested for High/Low Temperature, Humidity, Shock, Vibration, Rain, Fungus, and Salt Fog.
- CE Certified: Meets all European health, safety, and environmental protection mandates.
- RoHS & WEEE: Manufactured using environmentally friendly processes and materials.
- IP-Rated Weatherproofing: Designed for mission-critical use in 100% relative humidity.
Key Advantages
- Inventory Consolidation: A single wideband unit replaces the need for several narrowband antennas.
- Zero Maintenance: Factory-tuned architecture requires no field adjustments or periodic tuning.
- Protected Termination: Internal connector position prevents water ingress and ensures cable longevity.
- Pattern Stability: Wide vertical beam-width provides reliable links for mobile and high-angle communication.
Key Antenna Applications
- Military Air Traffic Control (ATC): Primary ground-to-air and tower communication.
- Shipboard Mast Mounting: Corrosion-resistant UHF links for naval and maritime vessels.
- Tactical Mobile Vehicles: Reliable omni-directional links for military and emergency response platforms.
- Aviation Ground Stations: Robust radio infrastructure for defense and aerospace sectors.
Design Features: CD-225-400 UHF aero band coaxial dipole antenna is an omni-directional antenna for vertically polarized waves. CD-225-400 Omni-directional UHF aviation coaxial dipole antenna is rugged all weather model, enclosed in a ABS radome, uses ultra corrosion resistant aluminum alloy and does not require any field tuning or adjustments. The compact size of omni-directional coaxial dipole antenna allows easy handling, shipping and highly suitable for ATC sites without having the requirement of multiple antennas. The coaxial dipole antenna features high suppression of skin current which provides the smooth VSWR over the 225-400MHz frequency band. Cylindrical enclosure is used for low wind loading and for minimal effect of ice formation on the antenna operation as well as providing an aesthetically pleasing appearance. Due to sturdy design the coaxial dipole antenna is highly suitable for fixed station application, shipboard mounting and mobile application.
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