Network extension over 100m

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24 Feb 2025
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2
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uk
I'd like to extend my network to my workshop using cat6 solid copper cable. I've paced the cable run out at 140m max.

I understand that the signal will begin to drop off after 100m, but my question is by how much? I haven't been able to find figures for this.

I'm starting with 145Mb at the router, how much am I likely to get at the workshop?

Yes, I could use a switch / signal booster / convert to fibre optic for the run etc, but I want a quick and easy solution to enable me use spotify / watch the odd youtube video on how to fix stuff etc. I'm not gaming or crypto mining and don't need a hugely fast connection. 10mb would be fine. The Openreach guy who installed the fibre seemed to think I'd have no bother, but just looking for some other opinions before I do it please.
 
I'm not completely sure, but I think I had around 120m at a previous property with no issues, and that was with a slow connection. I know all about the theory (and I can see that everyone else does too) as that what you find when you search (to be fair, usually on websites trying to sell you stuff). The Openreach guy who said it would be fine may have known what he was talking about. My instinct is that it will work, but I guess I'd really like to hear from someone who has done it to confirm that before shelling out on the cable...but someone like that probably wouldn't be reading these forums or they wouldn't have done it!

I'll look at costs again. Fibre cable seems to come in marginally cheaper than the more expensive cat6 and the media converters are about £25 each. I think expensive ethernet cable plus POE and a repeater that has to be pulled through the duct is going to add up to more or similar. The main issue with fibre I guess is that I either need to buy it pre-terminated and end up with extra cable in loops or I need to shell out for a terminating tool kit as well (I've already got the Ethernet tools..)
 
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