ZyCast
SG-289 User’s Manual v1.1
21
$GPRMC
This message transfers recommended minimum specific GNSS data. Following is an example.
$GPRMC,161229.487,A,3723.2475,N,12158.3416,W,0.13,309.62,120598, ,*10
The $GPRMC message format is shown below.
Field Example
Unit
Notes
Message ID
$GPRMC
RMC protocol header.
UTC Time
161229.487
hhmmss.sss
Status
A
A: Data valid or V: Data invalid.
Latitude 3723.2475
ddmm.mmmm
N/S Indicator
N
N=north or S=south.
Longitude 12158.3416
ddmm.mmmm
E/W indicator
W
E=east or W=west.
Speed over ground
0.13
knot
Speed over ground
Course over ground
309.62
degree
Course over ground
Date
120598
ddmmyy, current date.
Magnetic variation
(1)
degree Not
used.
Mode
(2)
A
A=Autonomous, D=DGPS, E=DR.
Checksum *10
<CR> <LF>
Message terminator.
(1) SiRF does not support magnetic declination. All “course over ground” data are geodetic WGS84 directions.
(2)
Fields marked in italic red apply only to NMEA version 2.3 (and later) in this NMEA message description.