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RE: Graphical Satellite Tracking with Linux



Hello Jamie and everyone...

> I still haven't gotten xplanet to work with earthtrack2. It complains about
> needing some sort of switch. Maybe someday ...

Some of xplanet's options have changed slightly from what they were
in earlier versions, and some minor changes to earthtrack.c need to
be made.

Simply change the -proj occurrences to -projection in lines 621 and 623
of earthtrack.c.

The default fonts used by xplanet have also changed.  On line 463,
change the occurrence of FreeSans.ttf to FreeMonoBold.ttf

Then recompile (run the ./build and ./install scripts), and you're
ready to roll.

If you haven't done so already, don't forget to edit your /etc/services
file to include the line:

predict        1210/udp       #PREDICT Socket

This assigns port 1210 to PREDICT's UDP socket interface (used by
PREDICT in "server" mode (predict -s)), and the associated clients.

With PREDICT running in server mode, invoke earthtrack2, and within a
few seconds, you should be looking at the world centered on your QTH
with satellite footprints and sub-satellite points around your area.

NOTE: SOME window managers (KDE) won't allow a program such as xplanet
to control the "root" window.  xplanet documentation (and/or its web
site) explains how this problem can be alleviated.

This all compiles and runs without a hitch (including gsat) under
Slackware (10.1).


73, de John, KD2BD


Visit John on the Web at:

	http://kd2bd.ham.org/
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