I believe cable companies are required to carry local channels in HD. Before I added an HD box to my kitchen TV I was able to get 4,5,7,9,11,25,38 and 56 in HD in the clear. You have to scan for channels and you should find them. When I first tried it the Comcast scan resulted in odd channels like 83.3. Now they use 7.1 for channel 7 in HD. The odd channels were the primary reason for adding the HD box.
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