THE AUTOMATIC PACKET REPORTING SYSTEM

By Tom Weeden, WJ9H

PART 8 - WinAPRS


This month we will take a look at another version of APRS which runs under Windows 95/98.  Up to this point, our discussion has been with the original version for DOS, which can run on a machine as simple as an 8088, as long as the computer has a color monitor.  The advantage of the DOS version is that just about any old PC gathering dust can be pressed into service on this interesting mode.

WinAPRS is actually a rewritten version of MacAPRS for the Macintosh.  (Mac users: most of this discussion also applies to you, but I write for the Windows users since there are many more of them!)  All APRS flavors are compatible on the air with each other for the most part, and they also allow you to see APRS activity on the internet.

The advantage of WinAPRS is that it can run simultaneously with other programs, such as your Dial-Up Networking routine.  To have a look at WinAPRS, you will need to get two files.  For the program itself, go to either:
 ftp://msproul.rutgers.edu:/pub/hamradio/APRS/WinAPRS
 http://www.tapr.org/tapr/html/sigf.html
...and look for WAPRS23x.ZIP.  [As of June 2000, the current version is WAPRS246.ZIP]

To download detailed maps of every Wisconsin county, go to either:
ftp://aprs.rutgers.edu/pub/hamradio/APRS/TIGER%20Maps/
ftp://aprs.rutgers.edu/pub/hamradio/APRS/maps
...and look for the file WISCONSN.ZIP (note one "I" is missing in the file name).  It's a large 21.8 MB file.  You don't need this file to run APRS, but the detail in the maps makes it worth the effort.

[As of June 2000, neither of the above links were still active.  Other Wisconsin maps can be found here.]

After you get the files, create an empty directory, and un-zip the WinAPRS file.  Next go to the newly created MAPS directory and un-zip the WISCONSN.ZIP file.  Finally, find the file APRSSERV.TXT, open it, and edit in a line at the end of the file as follows:

N9UUR.imc.mu.edu <tab> 14579 <tab> Milwaukee APRServe/N9UUR

Remember to use the TAB key instead of spaces between fields.  This entry will allow you to tap into the Milwaukee APRS internet gateway if you have internet access.

Now you're ready to run WinAPRS.  Start the program, click "OK" once, then "OK" again if you're running a TNC, or "Cancel" if you're going to connect to the internet.  (Disclaimer: I have never run WinAPRS on the air, only the internet.  You're on your own on 2 meters!)  You will now see a US map.  If you're dialed into the internet, select "Settings" and uncheck "Enable Sound", then "Settings" again and "TCP/IP Connections", then "Milwaukee APRServe/N9UUR".  You should now begin to see icons plotting around the Milwaukee area.
{winaprs1.jpg}

To zoom in on an area, go to "Maps" and select a new map.  I made a copy of my WISOUTH.MAP file from DosAPRS and moved it to the WinAPRS maps directory to show southern Wisconsin.
{winaprs2.jpg}

Now let's choose the map for Milwaukee County.  You can use the mouse and Page Down to zoom in as shown here.
{winaprs3.jpg}

In this example, you can see four Milwaukee-area stations that are on the air on 2 meters and have made it through the N9UUR I-gate (internet gateway).  I single-clicked on KB9RGD-9's car icon, and in the lower-left corner of the screen I can see that I have received 7 packets from that station.  If you double-click a station icon, you will get more detailed information.

Since APRS is great at reporting weather statistics in near-real time, WinAPRS allows you to see a page listing of just weather stations.  Click on "Lists" then "Weather Lists" to get a screen like this.
{winaprs4.jpg}

Clicking the title bars on these list pages sorts the data from all the stations.  I clicked on the bar labeled "Day/Time" to sort the data from newest to oldest.  You could also click the "rRain" column to see who had the most rain in the last hour or "pRain" for a sort of the last 24 hours' rainfall.  Several different lists are available, such as a list of all stations received, or just mobiles running GPS trackers.

Check the help files for more detail on how to set up your specific brand of TNC for use on air, or how to send one-line messages to other stations (on the air or on the internet).

So who is on the air on APRS in Wisconsin anyway?  I have a short list of stations heard on 2 meters at my location in Madison.  There are many more, I'm sure, but they were not heard here.  Recognize anyone?
N9MYK-7  WD9BBE  N9IDH-4  N9IDH  KA9VSZ  N9MYK-9  N9UUR-10  KB9RGD  N9LGD  W9CWD  N9UDO  WX9MKX  N9EAL-10  AE9A-10   N9UUR   K9ABC-10  N9UNR  N9UDO-15  N9MBG  N9MKX-10  KB9RGD-9  N9PQJ

I hope you'll join the list soon.  See you on 144.39!
 

More APRS information at: www.qsl.net/wj9h.
 

This article originally appeared in the October 1999 issue of Badger State Smoke Signals but was updated 2000 June 14.
Copyright 1999, 2000, Thomas C. Weeden, WJ9H