What are the communication losses of a twisted pair cable at a distance of + -70 meters?

Question

Computer networks

I want to lay the Internet from an apartment building to a private house, the distance is about 50 meters, in fact it will be 70 meters. I would like to know the big losses will be in speed? Tariff 75 mb/s.

Answer 1

With the correct laying of a twisted pair cable of a correctly selected category (cat5 is enough for 100BASE-T), there will be no loss at a distance of up to 100 meters.
With the scheme that you drew, and with properly selected holy water, you will not have any losses either. Until the first thunderstorm, after which you will lose at best a couple of ports in the switches, at worst - everything that is connected to the network.

Answer 2

I would not throw a twisted pair cable between buildings, optics is better. Because everyone has already written about thunderstorms. Optics by cable will not be much more expensive, and in most cases it will be cheaper to operate.

Answer 3

if you already decide to pull along the street, then pull better optics, especially 70 meters, you can find a ready-made terminated cable 100 meters https://wifimag.ru/cat/komlektuyushchie/sfp_sfp_mo...
and given the distance, you can get by with the cheapest wifi bridges 2.4 GHz, the main thing is to make good lightning protection on buildings