This is a new site for you to use to build your own custom satellites.xml files. it differs from the traditional sources as it allows you to build your satellites.xml files without the many many inactive transponders that you find on sites such as lyngsat. you can of course choose to keep these transponders in your files but by building a satellites.xml file without those "dead" transponders you will substantially speed up your scans as the box will not need to pause over those "dead" transponders.