A:AnswerSome cable companies encrypt their signals that makes you get a small cable box. I know Comcast does in my area. I don't have twc so I don't know if they do. Do you have an old school antenna? I recommend trying that and see what you get. You would be surprised on what is out there just over the air. If you get a small digital box for basic cable it could be about $5 per month and you can get that HD picture you paid for when you bought the tv. Just make sure you use HDMI cable and change the input from coax to HDMI. Good luck!