Thanks so much to all who responded to my FIFO inquiry. A lot of good ideas and info was presented. I got some very good ideas. By the way, I have an OEM Motorola GPS board and just received a Garmin GPS board and antenna as well. I'm going to incorporate a GPS into my project rather than provide only a NMEA-0183 port. If anyone has any experience or opinions on these I would like to hear it. >From all the units I found on the web, the Garmin seems to be far superior (from the data sheet anyway) and less expensive. When I opened the package I was amazed at how small it is. Thanks, Charles -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu