AD-23/35-4 — UHF Collinear Dipole Antenna

Overview

The AD-23/35-4 is a rugged collinear dipole antenna engineered for UHF applications operating between 820 and 940 MHz. Housed in a durable composite tube, it delivers high omnidirectional gain and features an integrated base matching circuit for static charge protection.

Technical Summary

• Frequency Range: 820 to 940 MHz (UHF)
• Gain: 8.15 dBi (6 dBd)
• Radiation Pattern: Omnidirectional
• Design: Collinear dipole
• Electrical Protection: DC grounded via built-in matching circuit

Operational Use Cases

Designed for UHF communications requiring reliable omnidirectional coverage and robust static protection. The high-gain collinear design supports extended range in demanding outdoor installations.

Deployment Environments

• Operating Temperature: -40 to +80 °C
• Wind Survival: Up to 180 km/h
• Enclosure: Atmospheric-resistant composite tube

Performance Metrics

• Frequency Band: 820–940 MHz
• Gain: 8.15 dBi (6 dBd)

Setup & Portability

The antenna attaches directly to vertical masts ranging from 40 to 50 mm in diameter. For alternative mast sizes, compatible mounting consoles accommodate diameters from 26 to 60 mm.

Compatibility

Compatible with the ADK family of mounting consoles to support mast diameters between 26 and 60 mm.

FAQs

• How does a collinear design increase antenna gain? A collinear array arranges multiple radiating elements vertically to compress the elevation beamwidth. This focuses the radiated energy toward the horizon, achieving higher gain while maintaining an omnidirectional azimuth pattern.
• What is the purpose of the built-in DC grounding? The base matching circuit connects all radiating elements to ground potential. This configuration provides inherent protection against static charge buildup during operation.
• How is the antenna secured to a mounting structure? Verify the mast diameter prior to installation. The unit mounts directly to 40 to 50 mm masts, or it can be attached to 26 to 60 mm masts using compatible mounting consoles.
• Problems we solve: how do we narrow antenna choices? Balancing operating bands, coverage needs and mounting space can make antenna selection difficult. Share those constraints with Cyntony to compare candidate antennas and identify what needs manufacturer confirmation (Our process).
• Outcomes we deliver: what comes from working through the requirements? The practical outcome is a requirements-led set of product options to evaluate with Cyntony. Confirm performance, compatibility and any service scope for your configuration before selection (Our process).

Video Notes

A brief visual guide demonstrating direct mast attachment versus using the ADK mounting consoles would assist installers. An animation showing how a collinear dipole compresses the elevation pattern to increase gain would also be highly educational.