Most GPS receivers output some kind of latitude/longitude information via RS-232.  If you are dealing with GPS chip set instead of a receiver, I believe it still comes out as either RS-232 or TTL-level sync or async data.

Try:
http://www.trimble.com/       (Trimble is one of the big end-user and OEMs)
http://www.garmin.com/      (Garmin is also big into small GPS units <pun intended>).

----------
From:   Randie Ohtsji [4555]
Sent:   Tuesday, December 09, 1997 2:33 PM
To:     PICLIST@MITVMA.MIT.EDU
Subject:        gps

Hello,

I am interested in more information on GPS.  Does anyone have any good
links?

Questions:

        1) Has anyone interfaced a gps receiver with a pic before?
        2) Source of low-cost gps receivers?
        3) How accurate are they?
        4) How do you interpret the data and calculate your location?

Any information would be appreciated!

-Randie
                                    ________
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