In 2001, I contacted Steve Dimse, K4HG, regarding taking over support of javAPRS as his focus had shifted to
findU.com.Steve passed along the source with the agreement that I would not convert the project to open-source. I cleaned up
many bugs and added a number of features. javAPRS remains freeware to the Amateur Radio community.
NOTICE: Due to limited bandwidth, do NOT use www.aprs-is.net, www.jfindu.net, or www.ae5pl.net as either the codebase or the
APRS-IS feed for your web pages. Upload the necessary .jar, .cab, and map files to YOUR web site and use YOUR web site for the codebase. Select a
server (or a rotate.domain.name server name) from the list at http://www.aprs-is.net/APRSServers.aspx for your data feed.
The menu above points to:
- License - License for use on personal web pages.
- Installation - Documentation on how to install and use javAPRS.
- Parameters - Applet parameter definitions.
- Map Types - javAPRS map type descriptions and examples.
- Public Functions - Functions callable from JavaScript.
- Compression - Compressed Format Preprocessor code.
- Mic-E Parser - Mic-E parser code.
- javAPRS Findu - Live data version of Findu
- javAPRS SIG - Mail list for people interested in javAPRS.
- APRSTextbox - Applet that displays the data stream in text format.
The current version is 2.9b03. To
upload all of the files (including maps), upload
javAPRSDirs.zip and
unzip it on your server. As of release 2.1, the applet is now signed by Analysis &
Management Enterprises Corp. (www.ametx.com).
It is released only as a signed archive in Sun/Netscape form (japrs.jar), in
Microsoft IE form (japrs.cab), and in Apple Macintosh compatible form
(japrsmac.jar).
Why issue it as a signed applet? This allows javAPRS to access remote
APRS-IS server! It also eliminates the need for image routing reflectors!
In short, it allows javAPRS to play outside of the Java applet "sandbox" which
restricts network access. See the
Installation tab for more information.
Note the change in jar/cab distribution described below...
There is also japrspng.cab, japrspng.jar, and japrspngmac.jar. These jars contain
support for PNG formatted images. If your map source is PNG type files, follow
the instructions for adding the jar to your archive and cabinets list on the PNG
map type page. Later versions of Java include PNG support making this special
support unnecessary if your users will only be using recent versions of Java.
japrsshp.cab, japrsshp.jar, and japrsshpmac.jar contain
support for ShapeFiles (ESRI). If your map source is shape files, follow the
instructions for adding the jar to your archive and cabinets list on the
shapefile map type page. If your web pages don't use javAPRS to display ShapeFile maps, these files are not needed.
japrsmac.jar, japrspngmac.jar, and japrsshpmac.jar have added Macintosh support. See the
Installation tab for more information.
I have very limited bandwidth to my web/server site and cannot
support many online connections. Please upload the javAPRS files to your
web server and use
another APRS server for the feed from APRS-IS. My APRS-IS feed port is read-only
and shows posits, objects, items, and weather reports only.
A list of available APRS Internet servers is at
APRS Servers.
It is not my intent to make javAPRS a robust application similar to the other
high quality APRS GUI applications that are available. I am making javAPRS
a complete (and accurate) web based application for people to use on their web
sites. It has the unique ability to display real-time data via a web
browser which is invaluable for demonstration purposes and for use by persons
who don't have APRS software on the computer they are accessing the Internet
with.
Click to join the javAPRS users group.