Shakespeare Classic 3 AIS Antenna The Shakespeare Classic 3 AIS Antenna is built with extra bandwidth for all popular AIS transceivers and optimizes communication performance over VHF marine frequencies. With a lightweight, low-profile stainless steel body and 36 whip, this 3 antenna is designed for masthead mounting to enhance transmission quality. Features Optimizes Communication Performance Over VHF Marine Frequencies Designed Specifically For AIS Transceivers Low-Profile Stainless Steel Body