Not only do they have cable (at
all levels--county, state, and fed) but they often have their own TVs in the cells, at least in many of the longer term state/fed settings where the offender has already been sentenced (usually about 2+ years or more to qualify for "prison.")
I'm not sure about that specific institution though, as every state is different, but I know the local state prison SCI facility here in Pittsburgh has both cable and private TVs in cells. Of course, the inmate has to pay some type of cost from their commissary account for the private TV in the cell. I believe they sell them at a reduced cost, and are somewhat smaller/moderate in size.
The cable is everywhere, although you'd have to sit in the main room where they often need to either use a headphones system, and/or have the scrolling script on the screen. That's your hard earned tax dollars at work