Jimbo wrote on Oct 25^th, 2016 at 9:18pm:

Hmmm... I covered the exact same stretch of water across Pickerel twice during that trip in late September a few weeks back.  On a clear & sunny Thursday afternoon I paddled the entire stretch (@13 miles) from Dawson campground to my camp (a couple miles southwest of Lookout Island).  I only lost my signal for about 45 seconds, tops, in three hours of paddling. Eight days later on what started as a fairly foggy morning it quickly became REAL foggy.  I traveled virtually the same stretch of water as before.  The GPS worked fine for the first 10 minutes... right until I got completely immersed in the soup.  The signal died and never did return.

Based on this, I'd say you have a defective unit.  Anytime I've had unobstructed sky overhead, my GPS has always accurately placed me on the map.  Weather has seemingly no impact on my unit (which I'd venture to say is older and less capable than the one you have).  It has only failed to provide a signal when I was under relatively thick foliage or in narrow valleys or slot canyons where there is limited sky overhead.

Sounds like you might have a screw wire loose.

dd