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Re:10mbps over 1km on a single pair of wires by watersb on Saturday June 25, 2022 @04:37AM (#31873534)
Thanks, that explains it quite nicely.

1990s AppleTalk networks could work over a single pair. I ran a network with hundreds of Macs for a tech company. Ten buildings in a small campus.

Still remember the day the fire-alarm techs punched down over one of the Macs in the executive office. Not much of a network signal when there's 24 Volts on the same line.

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