ftp://ftp.swin.edu.au/slackware/slackware-9.0/extra/source/ham/satellite/  direct

[DIR]predict/  direct  1387+ twin directories
[DIR]phase3/  direct  167 twin directories
[DIR]pbpg/  direct  88 twin directories
[DIR]p3dtelem/  direct  85 twin directories
[DIR]mtrack/  direct  818+ twin directories