AD-23/2-2 — VHF Collinear Dipole Antenna

Overview

The AD-23/2-2 is a vertically polarized, collinear dipole antenna engineered for VHF communications from 135 to 175 MHz. Encased in a durable composite tube, it provides high performance for fixed-site and maritime applications. This antenna is designed for direct mast mounting and can handle up to 200 W of continuous wave (CW) power, making it a robust solution for secure and tactical communication links.

Technical Summary

• Frequency Range: 135 – 175 MHz
• Polarization: Vertical
• Peak Gain: 5.15 dBi
• Power Handling: 200 W CW
• Design: Collinear dipole array
• Construction: Composite material housing
• Electrical: DC grounded radiating elements
• Mounting: Direct mount for 24 – 62 mm diameter masts

Operational Use Cases

This antenna is well-suited for establishing base station links in VHF radio networks. Its omnidirectional pattern and high gain are ideal for tactical and secure communications, providing broad coverage for both land-based fixed sites and maritime platforms. The design supports reliable point-to-multipoint communication across its specified frequency range.

Deployment Environments

Designed for long-term outdoor deployment, the AD-23/2-2 features a rugged composite enclosure that resists harsh atmospheric conditions. Its direct mast-mount design makes it suitable for installation on towers, buildings, and ship superstructures. The antenna's DC-grounded construction provides inherent lightning protection, enhancing its reliability in exposed environments.

Performance Metrics

The AD-23/2-2 delivers a peak gain of 5.15 dBi, focusing energy toward the horizon for enhanced range in ground-based and maritime communication systems. It reliably handles up to 200 W CW input power across its 135 to 175 MHz operational band. The collinear dipole configuration, which includes two half-wavelength elements and a phasing coil, is optimized to achieve this gain performance while maintaining an omnidirectional azimuth pattern.

Setup & Portability

This antenna is intended for fixed installations. It is designed to be mounted directly onto a vertical mast with a diameter ranging from 24 to 62 mm. The antenna can also be paired with standard ADK mounting consoles for additional installation flexibility. Its design prioritizes durability and secure attachment over portability.

Compatibility

The AD-23/2-2 is compatible with radio systems operating within the 135 to 175 MHz VHF band. Its mounting system is designed for direct attachment to masts with an outer diameter of 24 mm to 62 mm. The antenna is also compatible with Trival Antene's ADK series of mounting consoles.

FAQs

• What is a collinear dipole antenna? A collinear dipole consists of multiple radiating elements arranged in a single line. This antenna uses two half-wavelength elements connected by a phasing coil to increase its gain and concentrate radiated power toward the horizon.
• What does vertical polarization mean? Vertical polarization indicates that the antenna's electric field is oriented vertically. For optimal signal strength, the polarization of the transmitting and receiving antennas in a communication link should match.
• What is AD-23/2-2 — VHF Collinear Dipole Antenna used for? AD-23/2-2 — VHF Collinear Dipole Antenna is categorized as Omni Antenna. Listed applications include Secure Communication, Tactical Communication.
• 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 did Cyntony's tactical-link field test establish? Cyntony's 2025 XTND-DIRECT field test showed how terrain, antenna height and clearance affected a specific mesh-radio link. The result informs deployment questions; it does not establish range, throughput or suitability for this product (Field-test account).

Video Notes

Suggest a short video demonstrating the antenna's robust composite construction and showing the process of mounting it to a mast within the specified diameter range. An animated 3D radiation pattern overlay would help visualize its 5.15 dBi gain and omnidirectional coverage.