The GPS Digest is a forum for the discussion of topics related to the USAF Global Positioning System (GPS) and other satellite navigation positioning systems. The GPS Digest is moderated and is not presently available via USENET newsgroup. Submissions should be made to firstname.lastname@example.org. Administrative requests should be made to email@example.com. Past issues of the GPS Digest can be found in the file archives of the Canadian Space Geodesy Forum on unbmvs1.csd.unb.ca (18.104.22.168) from where they may be anonymously ftp'ed. Immediately after connecting to unbmvs1, change the working directory to PUB.CANSPACE. You will find the digests in "directories" (actually partioned data sets) GPS.DIGEST.V1 and GPS.DIGEST.V2. Contact Richard Langley, firstname.lastname@example.org if you encounter any difficulties.