It was unclear what they were writing about. I could not find where they were talking about the old American NTSC channels or the new OTA HD channel space.
I'd find a better article next time.
The FCC is buying back radio spectrum from TV stations. Is the spectrum to valuable to waste on the few that still receive TV over the air. http://flatpaneldisplay.blogspot.com/2012/09/the-end-of-broadcast-tv.html