Track Made Good And Ground Speed - NorthStar 2505 Installation Manual

Appendix C NMEA output protocol
Track made good and
ground speed
HEADER
$GPVTG,xxx.x,T,,,xxx.x,N,xxx.x,K*hh<CR><LF>
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Actual track made good and speed relative to the ground.
CONTENTS OF DATA FIELDS
km/hr
speed
knots
speed
degrees true
track
Example:
Track made good and ground speed data sentence.
$GPVTG,234.6,T,,,075.3,N,139.5,K*21<CR><LF>
Track
Speed
Speed
234.6 from North
75.3 knots
139.5 km/hr
2505 INSTALLATION MANUAL, Revision A