My Furuno gp1650wf chartplotter is showing the wrong speed in knots. It shows 20 knots when we are doing 28 knots. At an estimated 42 knots it says 32 knots. I have cleaned the GPS plug and the gps location works perfectly. Not sure what else it it could be. I have not checked it is using the wheel sensor rather than GPS in settings. (thought of this while typing). Any other ideas??
Boating - Furuno - 1650wf/Nt Gps/Chartplotter/Fishfinder
Answers & Comments
Congratulations the device is within functionality. As a matter of fact devices without shark lense are least impactful. For example, the device may least capture images or receive data in realtime however provides accurate flight resources.