If have have Comcast's cable service, and one TV already has Comcast HD with all of the other channels, yet the other TVs in the house lack the box for additional channels, do we still need the converter box?
A while ago, I saw that comcast commercial where a guy was getting all paranoid about loosing the channels on his regular TVs (or maybe I miss understood the commercial?), and yet his wife told him to stop worrying because they have Comcast.... but what I don't understand is how exactly that works.
In my house, we have cable on all TVs, except the one we have with the Comcast box has more and has HD. The second situation is with my grandmother's setup. She has a Comcast box downstairs, and upstairs she has everything coming in from antennas. Does this mean the TVs at my house will be fine, and hers won't be?
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