Quote Originally Posted by stormcloud View Post
JP, tell us the difference in the functions of the GPS puck and the heading sensor.
Not JP but ...:

GPS is a function of the Earth's orbiting satellites relaying data to the GPS antenna to calculate where that GPS antenna is located on the Earth's surface (latitude and longitude) ... Then the unit plots that "location data" on the Chart view as "Position" ...or where you are ...

Heading is a function of a magnetic compass in the heading sensor puck that measures how many degrees from Magnetic North (of the Earth) the heading sensor (compass) is currently pointing ... Then the unit plots that "heading data" on the Chart view as "Orientation from North" ...or which direction you are pointing ...

Rickie