Shakespeare 396-1-AIS Broadband VHF for AIS System

The Shakespeare 396-1-AIS Broadband VHF Antenna is a commercial-grade antenna engineered specifically to meet the broader bandwidth requirements of modern AIS (Automatic Identification System) transceivers. While standard VHF antennas are tuned for voice channels (around 156 MHz), this AIS model features a 6 MHz bandwidth centered at 158 MHz, ensuring superior performance for both safety and navigation data without triggering high SWR alarms.

This 4-foot fiberglass antenna is built for extreme durability, featuring brass and copper elements sealed within a rugged radome. It is designed primarily for mast mounting, featuring an aluminum sleeve and included U-bolts that allow it to be easily attached to a sailboat mast or a T-top rail.

Key Features & Benefits

• AIS-Optimized Tuning: Specifically designed to provide a low SWR across the entire AIS and VHF marine bands, maximizing the range and reliability of your AIS data transmissions.

• Commercial-Grade Construction: Built to withstand harsh offshore environments with a non-yellowing fiberglass radome and high-quality internal conductors.

• Stable Signal Reception: The 3dB gain and 1/2-wave coaxial sleeve design provide a broad radiation pattern that reduces signal fading, even when the vessel is rolling in rough seas.

• Versatile Mounting: Equipped with a mast mounting sleeve; it includes U-bolts for easy installation on masts and can also be secured with steel banding for larger structures.

• Flexible Connection: Features a standard SO-239 connector at the base, allowing you to choose the exact length and grade of coax cable needed for your specific boat layout.

Technical Specifications

Summary of Use Case

This antenna is the ideal choice for boaters who have a dedicated AIS transponder or a VHF radio with built-in AIS that requires a high-performance, externally mounted antenna. Because it is a mast-mount style, it is perfectly suited for sailboats or the highest point on a powerboat's radar arch.

Since this antenna does not include a cable, I can find a high-quality RG-8X or RG-58 coax cable with the correct PL-259 connectors to help you complete your installation. Would you like me to look for those?