PBS Satellite Service (Also known as PBS National or simply PBS Satellite. Formerly known as PBS Schedule X in Eastern Time, with the west coast delay signal designated PBS-XD) are feeds relayed from PBS by satellite. The service provides a mixed variety of programming selected from PBS's regular network services. In the X/XD years a satellite feed was multicast by some PBS member stations on an over-the-air DTV subchannel along with their regular programming, or during overnight hours on their main channel to provide a second opportunity for viewers to watch or record primetime programming.
As of 2018, the PBS satellite feeds can be received unscrambled using a free-to-air satellite receiver set to these coordinates:
Currently, select stations broadcast the feed, usually overnight, like KGTF (PBS Guam, broadcasts most of the channel as a localised feed). The channel is also available over satellite providers like DirecTV (Channel: 389). This channel is available to viewers of DirecTV (and other providers). PBS stations provide all of their channels free to TV providers who do not receive local channels.
Currently these channels are as follows (Lyngsat):
Currently, PBS Satellite uses the national PBS logo.
PBS Satellite Service is freely and nationally available from the designated Ku broadcast satellites using free-to-air satellite dishes as small as three feet, and from the designated C-band broadcast satellite.
http://www.popflock.com/video?id=Y0peKirF1SI (1995, 5-second indent saying, "Your watching PBS. Viewer supported public television.")