AIS talker IDs

Talker ID Description
!AB NMEA 4.0 Base AIS station
!AD NMEA 4.0 Dependent AIS Base Station
!AI Mobile AIS station
!AN NMEA 4.0 Aid to Navigation AIS station
!AR NMEA 4.0 AIS Receiving Station
!AS NMEA 4.0 Limited Base Station
!AT NMEA 4.0 AIS Transmitting Station
!AX NMEA 4.0 Repeater AIS station
!BS Base AIS station (deprecated in NMEA 4.0)
!SA NMEA 4.0 Physical Shore AIS Station