58CONNECTIONS AND MAINTENANCE9 Connectionsq NMEA IN LEAD (Red)Connects to a GPS receiver for position indication.• A NMEA0183 ver. 2.0 or 3.01 (sentence formatters RMC, GGA,GNS, GLL and VTG) compatible GPS receiver is required. Askyour dealer about suitable GPS receivers.w NMEA OUT LEAD (White)Connects to a PC or navigation equipment (NMEA0183ver. 3.01 sentence formatters DSC, DSE compatible) forposition data received from other ships.e EXTERNAL SPEAKER LEAD (Yellow)Connects to an external speaker.r HAILER/FOGHORN (–) LEAD (Black)Connects to a hailer speaker (25 W nominal at 13.8 V/4 Ω).t HAILER/FOGHORN (+) LEAD (Blue)Connects to a hailer speaker (25 W nominal at 13.8 V/4 Ω).y ANTENNA CONNECTORConnects a marine VHF antenna with a PL-259 connectorto the transceiver.CAUTION: Transmitting without an antenna may dam-age the transceiver.u GROUND TERMINALConnect this terminal to a vessel ground to prevent electri-cal shocks and interference from other equipment occur-ring. Use a self-tapping screw (3 × 8 mm.)i EXTERNAL MICROPHONE JACKConnects to optional command microphone.o DC POWER CONNECTORConnects the supplied DC power cable from this connectorto an external 12 V battery.Do notloose!ortyiwqeu