Garmin map 540s

[triumph]

I have had this unit two years with not a hitch. The other day after I went offshore I lost my positioning. I could not navigate to any waypoints. When I returned to shore the unit came back on and was normal. I had power the entire time just could not navigate. This unit has an internal antenna so their was no blockage in any way. I have never seen this before and I am confused. By the way upon returning I did an update on the software and brought it up to 5.0. I was at 4.0. Would this have anything to do with it. I plan on calling tech support at garmin Mon. Thanks for your time. Doug

[Kahi]

Did you check to see if the unit was searching for WAAS signal or other sat signal?

That has happened to me.

Kahi

[triumph]

I have to say searching for sat signal. It was acquiring the signal till we got offshore. Then lost the signal. As I have said upon returning it acquired the signal again. I have to ask I am not familiar with the waas signal. What would that be. Thanks for your answer, Doug

[Kahi]

http://www8.garmin.com/aboutGPS/waas.html

[triumph]

Thanks for the info on Waas. Something I did not know.