Digital Yacht ZDIGIAISTX AIS Class B Transponder External GPS AntennaMeet the Digital Yacht ZDIGIAISTX AIS Class B Transponder with Wireless Interface a modern AIS solution for hands on boaters who want real time vessel data on every device. It streams your vessels position and identity via a secure WiFi network to smartphones, tablets, and PCs for navigation and collision avoidance. Class B AIS transponder: Full function Class B AIS transponder designed to share and receive AIS data with other vessels. Wireless