NMEA-0183 message: RMC
Position, velocity, and time
The heading computation in this message is derived from consecutive positions. For heading using a moving baseline system, see NMEA-0183 message: PTNL,AVR.
The RMC string is:
$GPRMC,123519,A,4807.038,N,01131.000,E,022.4,084.4,230394,003.1,W*6A
                                                            
GPRMC message fields
| Field | Meaning | 
|---|---|
| 0 | Message ID $--RMC Talker ID can be: | 
| 1 | UTC of position fix | 
| 2 | Status A=active or V=void | 
| 3 | Latitude | 
| 4 | Longitude | 
| 5 | Speed over the ground in knots | 
| 6 | Track angle in degrees (True) | 
| 7 | Date | 
| 8 | Magnetic variation, in degrees | 
| 9 | The checksum data, always begins with * |