We've used TIVO for several years along with Comcast "full basic" service. We don't have the box or get HD. I think the box is now free with the subscription.
Are you asking whether TIVO would work with just an antenna and local channels? I don't know the answer to that question. TIVO calls somebody on the phone in the middle of the night to get the TV lineup for the next 10 days or two weeks. Is that how a DVR works also?
I love TIVO. A friend of ours upgraded his and gave us the old one with a lifetime subscription. Its storage capability is enough for our needs.
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