If the problem with the tether is signal degradation, couldn't repeaters be attached to the cable to boost the signal? I'm sure there are ways to deal with signal corruption as well. Off of the top of my head, maybe sending the signal in triplicate, and the comparing between them to determine the intended signal could work, though I'm sure there are much better methods that I'm not thinking of.
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Stand between the Silver Crystal and the Golden Sea.
"Youngsters these days just have no appreciation for the magnificence of the legendary cucumber." --Krityan Elder, Tales of Vesperia.
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Stand between the Silver Crystal and the Golden Sea.
"Youngsters these days just have no appreciation for the magnificence of the legendary cucumber." --Krityan Elder, Tales of Vesperia.