I have had both cable and satellite before. In both cases a coax is run from the source to box that digitally decodes the signal, meaning that coax is transmitting a lot of data, often including high speed internet. Yet running a coax from the cable box to the tv only results in standard def picture. What gives?
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Coax is not HD compatible. When transporting a modulated signal, it’s fine. But when it comes time to “decode” that and display it in an HD format that the TV can understand, coax isn’t suited for that. The box is what decodes it and recombines it (it’s in pieces when it gets there to speed up transmission) and even sends it through the output to the TV. If that output is coax, there’s signal degradation.
In other words, prior to hitting the box, it’s not a TV signal at all
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