I think its usually a software problem. I've had various issues with
losing signal in different scenarios with my Garmin handhelds and
Garmin has always provided me a ROM update which appears to address the
issue.

-Robert


Jay Honeck wrote:
http://www.scn.org/~bk269/gps.html

This is an interesting site that explains why some pilots (seemingly
mostly running Garmin-brand portable GPS units) are having trouble with
losing satellite lock.

So far I've not had any trouble with our new 496 (and I've never had
any trouble with the Lowrance or AvMap units) -- but it's nice to find
an actual explanation for a problem that has struck several folks on
this group.