This antenna has been specially designed to meet the broader bandwidth requirements of all popular AIS transceivers. Commercial-grade construction with a mast mounting sleeve.
Features
• 1.2m Mast mount AIS antenna, 3dB
• Brass and copper elements
• SO-239 connector at the base
• Suggested mount U-Bolts included. Can be strapped to a larger mast using steel banding (not supplied).
• One section
• Coax cable sold separately
• 2 year limited warranty
https://bla.com.au/product/shakespeare-classic-vhf-ais-antenna-1-2m/