GPS 18 Technical Specifications (190-00307-00) Rev. DPage 184.2.7 Recommended Minimum Specific GPS/TRANSIT Data (RMC)$GPRMC,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>,<9>,<10>,<11>,<12>*hh<1> UTC time of position fix, hhmmss format for GPS 18 PC/LVC;hhmmss.s format for GPS 18-5Hz<2> Status, A = Valid position, V = NAV receiver warning<3> Latitude, ddmm.mmm format for GPS 18 PC/LVC; ddmm.mmmmm format for GPS 18-5Hz(leading zeros must be transmitted)<4> Latitude hemisphere, N or S<5> Longitude, ddmm.mmm format for GPS 18 PC/LVC; ddmm.mmmmm format for GPS 18-5Hz(leading zeros must be transmitted)<6> Longitude hemisphere, E or W<7> Speed over ground, GPS 18 PC and LVC: 000.0 to 999.9 knots, GPS 18-5Hz: 000.00 to 999.99knots (leading zeros will be transmitted)<8> Course over ground, 000.0 to 359.9 degrees, true (leading zeros will be transmitted)<9> UTC date of position fix, ddmmyy format<10> Magnetic variation, 000.0 to 180.0 degrees (leading zeros will be transmitted)<11> Magnetic variation direction, E or W (westerly variation adds to true course)<12> Mode indicator (only output if NMEA 0183 version 2.30 active), A = Autonomous,D = Differential, E = Estimated, N = Data not valid4.2.8 Track Made Good and Ground Speed (VTG)$GPVTG,<1>,T,<2>,M,<3>,N,<4>,K,<5>*hh<1> True course over ground, GPS 18 PC and LVC: 000 to 359 degrees, GPS 18-5Hz: 000.0 to359.0 degrees(leading zeros will be transmitted)<2> Magnetic course over ground, 000 to 359 degrees, GPS 18-5Hz: 000.0 to 359.0 degrees(leadingzeros will be transmitted)<3> Speed over ground, GPS 18 PC and LVC: 000.0 to 999.9 knots, GPS 18-5Hz: 000.00 to 999.99knots (leading zeros will be transmitted)<4> Speed over ground, GPS 18 PC and LVC: 0000.0 to 1851.8 kilometers per hour, GPS 18-5Hz:0000.00 to 1851.89 (leading zeros will be transmitted)<5> Mode indicator (only output if NMEA 0183 version 2.30 active), A = Autonomous,D = Differential, E = Estimated, N = Data not valid4.2.9 Geographic Position (GLL)$GPGLL,<1>,<2>,<3>,<4>,<5>,<6>,<7>*hh<1> Latitude, ddmm.mmm format for GPS 18 PC/LVC; ddmm.mmmmm format for GPS 18-5Hz(leading zeros must be transmitted)<2> Latitude hemisphere, N or S<3> Longitude, ddmm.mmm format for GPS 18 PC/LVC; ddmm.mmmmm format for GPS 18-5Hz(leading zeros must be transmitted)<4> Longitude hemisphere, E or W<5> UTC time of position fix, hhmmss format for GPS 18 PC/LVC; hhmmss.s format for GPS 18-5Hz<6> Status, A = Valid position, V = NAV receiver warning<7> Mode indicator (only output if NMEA 0183 version 2.30 active), A = Autonomous,D = Differential (WAAS), E = Estimated, N = Data not valid
