JimC Posted October 26, 2019 Share Posted October 26, 2019 How is it possible for a running outboard to upset a gps compass? I went out with my mate in his new runabout. I opened the compass app on my phone and noticed the red end of the compass pointed nearly south. When he shut the motor down the red end swung around and pointed north' as it should. The only explanation I can come up with is that the electronics on the outboard generate a radio interference on the same frequency that the gps compass uses. Any other thoughts? Jim Link to comment Share on other sites More sharing options...
shakey55 Posted October 26, 2019 Share Posted October 26, 2019 Although it is an app, I have read that compasses in phones can be affected by those phone covers that have magnets in the back. how close was you phone to the motor? Link to comment Share on other sites More sharing options...
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