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Appendix 3: NMEA 0183 GPRMC Data Format
RMC - Recommended Minimum data.
The Recommended Minimum data format is defined by NMEA (
National Marine Electronics Association)
for GPS
system data transmission.
Format:
$GPRMC,Time,(A/V),Latitude,(South/North),Longitude,(East/West),Ground
Speed,Direction,Date,,,A*CS<CR><LF>
Example:
$GPRMC,110214.00,A,2457.81039,N,12125.54004,E,0.634,287.73,210111,,,A*62
Name
Format
Example
Unit Description
$GPRMC string
$GPRMC
RMC protocol header
Time hhmmss.ss
110214.00
UTC
Time
Time of position fix in hours, minutes, seconds UTC
Status Capital letter
A
Navigation receiver warning status
V = Navigation receiver warning (maybe invalid)
A = Data valid (OK)
Latitude ddmm.mmmmm 2457.81039
User datum latitude in degrees, minutes and thousandths
of minutes
South/
North
Capital letter
N
N= North latitude
S= South latitude
Longitude dddmm.mmmmm 12125.54004
User datum longitude in degrees, minutes and thousandths
of minutes
East/
West
Capital letter
E
E= East longitude
W= West longitude
Ground
Speed
numeric
0.634
knot Speed over ground in nautical miles per hour
Direction numeric
287.73
degree Course over ground, degrees true
Date ddmmyy
210111
Current Date in Date, Month and Year format:
,,,
N/A
N/A
Null field
Mode
Indicator
A
A=Autonomous
D=Differential
CS
hexadecimal
*62
Mandatory checksum. 8 bit exclusive OR of all data in the
2019.09.11
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