Solution
You need to provide us with an exact model number for any of us to be sure, but my guess is that the HDTV you have does not have a digital TV tuner. You would need to purchase a Tuner Set Top Box (with or without DVR) that has a coaxial input and either an HDMI or DisplayPort output for your HDTV.

-Wolf sends
You need to provide us with an exact model number for any of us to be sure, but my guess is that the HDTV you have does not have a digital TV tuner. You would need to purchase a Tuner Set Top Box (with or without DVR) that has a coaxial input and either an HDMI or DisplayPort output for your HDTV.

-Wolf sends
 
Solution