digital non-reb refers to digital cable non-rebuild. It is just possibly a different order and listing of channels and of different channels. So you have non-rebuild and rebuild channel lineups. A lot of cable companies have already or will soon change their cable lineups. The change in channel lineup may have to do with a new way of adding more channel capasity. So it may be related to SDV (Switched Digital Cable) which allows the cable provider to make more channels available without having to broadcast the all down the coax cable....instead what happens is that when you tune to a channel the that channel gets transmited and the previous channe you were watching drops off from being broadcasted ....so the cable company saves bandwith. Now this happens on a larger scale so just because you change the channel it doesn't mean that perhaps your neighbor is also watching that channel so it is still broacasted for your neighbors sake.
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