Put the Keps.exe file in the TLE folder for Orbitron. Keps.exe will download the new amateur keps and place new data in a window for your editing pleasure Next write the file by clicking on the Write button. Next time you load Orbitron it will read the new keps or update the keps in orbitron by clicking on the update keps button. To update the filter, edit the kepconfig.cfg found in the TLE folder. One sat name per line. If you click on the filter button, The list will be filtered to include only those in your kepconfig.cfg file. Have fun AD5JN