WTTW is one of three Public Broadcasting Service (PBS) member public television stations serving Chicago, Illinois. WTTW Prime was launched on 30th March 2008, replacing the original channel which repeated programmes from the analog version of the main channel, WTTW 11. It shows a mixture of locally produced and PBS primetime programming.

Doctor Who was first broadcast on the channel from the Christmas week of 2009, with Series Two [Season 28] (2006) repeatied weekly starting from The Christmas Invasion; this was then followed by the entire Series Three [Season 29] (2007) on 10th/11th July 2010. In more recent years the channel broacast repeats of the "new" stories being shown on WTTW 11.