NMEA-0183 message: RMC

Position, velocity, and time

NOTE – 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 message fields

Field Meaning
0 Message ID $--RMC

Talker ID can be:
GP: GPS only
GN: More than one constellation

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 *