On Thu, 12 Oct 2006 10:27:13 GMT, Tom Francis
wrote:

Here's a couple of tings I picked up off of the sat/gps news group.

http://www.naval.com/help/emi.html

http://www.ccg-gcc.gc.ca/atn-aln/not...tc121602_e.htm

http://www.uscg.mil/hq/gm/moa/docs/11-02.htm

Kind of interesting.

Unfortunately, none of it pertains to me.

Try changing your engine RPM next time it happens. It's a long shot
but you could be experiencing alternator or ignition interference.
DGPS receivers are particularly prone to that sort of thing since the
differental transmitters operate in the long wave spectrum.