MPBN could soon have its own version of C-SPAN if lawmakers approve. The OTA version would air on a newly-created .4 subchannel, which will certainly put the squeeze on its existing channels (.2 is currently languishing as a SD feed of the main channel's programming.)
http://thebollard.com/2012/12/07/media-mutt-35/
http://thebollard.com/2012/12/07/media-mutt-35/