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I was reading a similar question about cables here which claimed the max length you'd be able to use a CAT5 ethernet cable at would be 2.5km. Is there a rating of ethernet cable that would work well up to 5km? It looks as though fiber optic is used frequently for super long distance however I don't think that will work in my case as I'm unsure how the laser that produces the light impulse will fair under conditions. Additionally to communicate up to 5km would I need a special transmitter? And is the limiting factor noise, latency or something else?

I apologize if my questions are self evident but if I try to follow other sources from the initial link I quickly get lost.

Thanks for the help!

thansen0
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1 Answers1

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Some of the Ethernet over single-mode fiber optic cable standards can reach 10km (e.g. 1000BASE-LX10), and some nonstandard but multi-vendor interoperable conventions claim distances up to 70km (e.g. 1000BASE-ZX).

If you want to do Ethernet over more than 100m distance, you shouldn't use copper, you should use fiber. For in-building runs (say 300m) you can use multi-mode fiber, but for longer runs between buildings (or between cities) you should use single-mode fiber.

Spiff
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