10mbps over 1km on a single pair of wires

Re:10mbps over 1km on a single pair of wires by throw0101a on Wednesday June 22, 2022 @08:32AM (#31835200)

> It seems that single mode fiber is king for long distance cable runs now, nevermind that it can push gigabits.

Bandwidth isn't the only consideration: you can deliver power over copper:

* https://en.wikipedia.org/wiki/Power_over_Ethernet#PoDL

* https://www.ti.com.cn/cn/lit/an/snvaa25/snvaa25.pdf

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Re:10mbps over 1km on a single pair of wires by DannyBee on Wednesday June 22, 2022 @08:38AM (#31835272)

Main reason POE is useful is that it lets you deliver power over existing wires. If you are running new wires, you can already do what you want.

They make plenty of fiber+power in single cable, because the fiber is unaffected by the power.

Running 1km of slow, expensive, single-pair cable to run low-data rate + power, vs fiber+power cable saves you essentially one connector. For very high cost - in money and loss of bandwidth.

Plus 10base-t1l is not common, so the price of equipment is high as well.

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