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- It's more the nature of the medium
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I don't have a pee-aitch-dee in phee-seecs, but
because the data stream is an analog signal (AC current) and because of resistance, capacitance, and inductance in the wire, there's a practical limit to the frequency.
Thinner wires (like cat5) help get around the capacitance and inductance issues, but those don't work very well at carrying 240V @ 20A to your clothes dryer.
And resistance will always be an issue, so repeaters of sorts to boost the signal must be used for long distances.
Marginal equipment upgrades will get them closer to the fundamental limitations of thick copper wire. To get past it they'd have to use wire that has better than conductance than copper e.g. silver gold etc. - too expensive.
But if it's faster than dial-up, what the heck, y not.....
In contrast, fiber is truly digital. Just boost your laser power until you get a bright enough signal out the other end.
:o) - Posted by: Jack-Booted EULA Posted on: 07/07/05 You are currently: a Guest | Members login | Terms of Use
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