AD-18/D-3512 — Wideband Mobile VHF/UHF Antenna

Overview

The AD-18/D-3512 is a wideband mobile VHF/UHF vehicle antenna by Trival Antene, designed for heavy-duty tactical applications. It covers the 25 to 512 MHz frequency band and features an optional integrated L1 GPS antenna housed within a robust, shock-absorbing base.

Technical Summary

• Frequency Range: 25 to 512 MHz (VHF/UHF), L1 1575.42 MHz (Optional GPS)
• Power Rating: 100 W CW maximum
• Polarization: Vertical (VHF/UHF), RHCP (GPS)
• Height: 2.75 m
• Weight: 3.8 kg

Operational Use Cases

• Tactical Communication: Provides continuous wideband coverage across VHF and UHF bands for field operations.
• Secure Communication: Designed to support communication networks requiring reliable, uninterrupted mobile links.

Deployment Environments

Designed for ground vehicles and tactical deployments, the antenna features a heavy-duty stainless steel spring to absorb shocks and vibrations. The lower and upper radiating elements are constructed from high-strength composite materials to withstand demanding environments.

Performance Metrics

• Gain: Rated from -6 to +0.5 dB relative to a 1/4 wave whip.
• Power Handling: 100 W CW.
• Frequency Coverage: Continuous wideband coverage from 25 to 512 MHz.

Setup & Portability

The aluminum and durable plastic antenna base houses the matching circuitry and optional GPS element. It utilizes a NATO standard 4.5-inch (114.3 mm) four-hole mounting pattern for straightforward integration onto existing vehicle platforms.

Compatibility

The AD-18/D-3512 is mechanically compatible with vehicle platforms utilizing a standard NATO 4.5-inch four-hole mount. The optional GPS element operates at L1 1575.42 MHz.

FAQs

• How does the vehicle surface affect monopole antenna performance? Whip monopoles utilize the conductive vehicle surface as a ground plane. Imperfect ground conductivity causes the radiation pattern to lift from the horizon, potentially altering coverage and gain.
• What is AD-18/D-3512 — Wideband Mobile VHF/UHF Antenna used for? AD-18/D-3512 — Wideband Mobile VHF/UHF Antenna is categorized as Omni Antenna. Listed applications include Tactical Communication, Secure Communication.
• What frequency bands are listed for AD-18/D-3512 — Wideband Mobile VHF/UHF Antenna? Catalog band tags include VHF, UHF, U/VHF. Confirm the exact operating range and compatibility in the supplier datasheet.
• 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