We got my parents-in-law a new (first) HDTV for Christmas and just hooked it up. It replaces a non-HD CRT, which had some sort of small, black box inline on the coax from the wall; I assumed this is digital-to-analog converter? Anyway, new TV has an internal HDTV tuner, but I'm wondering whether I still need some sort of box from Mediacom to be able to receive content accurately?
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