Header

Purpose

GPGGA

Global Positioning System Fix Data

GPRMC

Recommended minimum specific GPS/Transit data

GPGNS

GNSS capable receivers will always output this message with the GN talker ID

GPGLL

Geographic position, latitude/longitude

GPVTG

Track made good and ground speed

GPGSV

GPS Satellites in view

GPGSA

GPS DOP and active satellites

GPZDA

Date and time

GPHDT

Heading, True

HEHDT

Heading, True

IIXDR

Rudder sensor angle