VHF 300 Series Owner’s Manual 9Advanced OperationAdvanced OperationNMEA 0183 and NMEA 2000Connect your radio to a NMEA 0183 network or to a NMEA 2000 network to perform thefollowing functions:Transfer received DSC distress and position information to any compatible chartplotter.Receive GPS position. GPS position can be displayed on the Home screen and istransmitted with DSC calls. The icon is displayed when GPS data is available, andblinks when GPS data is not present. When GPS data is not present, the radio will signalfor you to enter your position manually every four hours.Transfer AIS information that the radio receives from other vessels. The radio cantransfer this data over a NMEA 2000 network or a NMEA 0183 high-speed network. Forinformation on enabling AIS, see page 28.For supported NMEA 0183 sentences and NMEA 2000 PGNs, see page 49. For moreinformation on connecting your radio to a NMEA network, see the VHF 300 SeriesInstallation Instructions.Additional Functionality with Other Garmin DevicesYour VHF 300 series radio has additional capabilities when connected with other Garmindevices.NOTE: Your Garmin chartplotter may require a free software upgrade to use thefunctionality listed in this section. Go to www.garmin.com for current updates to yourGarmin chartplotter software.When you connect your radio to a Garmin chartplotter using NMEA 0183 orNMEA 2000, your chartplotter can keep track of the current and previous positions ofthe contacts in the radio directory.TIP: Try using position tracking on up to three contacts to automate this process.When your VHF 300 series radio is connected to a NMEA 2000 network with anotherGarmin chartplotter, you can use the chartplotter interface to set up an individual routinecall.As an additional safety measure, when your VHF 300 series radio is connected to aNMEA 2000 network and you initiate a man-overboard distress call from your radio,your Garmin chartplotter displays the man-overboard screen and prompts you to navigateto the man-overboard point. If you have a Garmin autopilot system connected to thenetwork, it prompts you to start a Williamson’s turn to the man-overboard point.••••••