Lynn, There are predefined codes that correspond to shape files which can be downloaded. Sometimes the codes match up with county names and sometimes a NWS office has defined a more logical zone based on weather patterns for that area. Not sure if you have a GIS or mapping background but shape files are a semi standard map file format that have geometry information coded in to a database record. If an APRS program is able to work with shape files there is a way to create geographic information through a relational database table.
I am probably not explain it all that well as I work with mapping files all the time and it makes sense to me :-) Maybe this does a better job http://en.wikipedia.org/wiki/Shape_files Brian N2KGC -----Original Message----- From: xastir-boun...@lists.xastir.org [mailto:xastir-boun...@lists.xastir.org] On Behalf Of Lynn W. Deffenbaugh (Mr) Sent: Monday, January 17, 2011 5:02 PM To: Xastir - APRS client software discussion Subject: Re: [Xastir] Wx Alerts Just for my complete understanding, what is CW8048? I though the NWS office codes were 3 characters and that a b/XXX* filter would pick up what I need (for instance b/MLB* for my local (Melbourne, FL) weather service office? Lynn (D) - KJ4ERJ - Author of APRSISCE for Windows Mobile and Win32 PS. Realizing that we're getting pretty deep into an off-xastir-topic discussion and begging the indulgence of the list. Guy Story KC5GOI wrote: > I am still using aprsD on my igate and am able to specify specific alerts > for my CWA from the feed to go out RF. For example CW8048. I only send out > the ones for my county, not adjacent ones. The DFW area frequency is too > busy as it is. > > I have stuck with aprsD for various reasons. It is not a knock at Pete who > is a county away and a friend of mine. > > On Mon, Jan 17, 2011 at 3:31 PM, Tom Russo <ru...@bogodyn.org> wrote: > _______________________________________________ Xastir mailing list Xastir@lists.xastir.org http://lists.xastir.org/cgi-bin/mailman/listinfo/xastir _______________________________________________ Xastir mailing list Xastir@lists.xastir.org http://lists.xastir.org/cgi-bin/mailman/listinfo/xastir