The NMEA 0183 has two different communication (baud) rates for-4800 baud and the faster 38400 baud (also known as NMEA 0183-HS). You have to match the baud rate of both devices for communication to occur. AIS will always use the faster rate. Once the speeds correlated on our test boat, the radio presented targets on its one-inch display. Sitting at the dock it was apparent that info below decks was useless.
- Standard Horizons GX2150 Matrix AIS+ has internal GPS which allows it to track position and deliver AIS data, but the screen is too small to be of much use in rough conditions.
- Images 2 and 3 are from the instruments on the test boat (yes she was going slow). The Raymarine autopilot is getting navigation information (bearing to waypoint) from the Garmin
- GPS position data is generated by the Garmin chartplotter/GPSmap 440s.