CNN Crossfire March 19, 2014 22:41:00
Originating? we don't have any real answers with all of this, but we have a lot of ideas that are worth talking about here because it is such a mystery. every plane that's in the sky is emanating a tremendous amount of information about itself. largely through the acars system. most of the time that's going out through vhf radio when it's over land it goes through a radio tower. if it moves out over the water, if it's further out where it can't quite reach those land stations, then this plane will connect through a satellite and that satellite in turn will send that signal down to a ground sta...
Source: archive.org