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Network cable for long-range connections

Network cable for long-range connections

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Fly_Fishball
Member
160
01-19-2026, 03:12 AM
#1
today i set up a long network cable in my new room. first I used a 25-meter one, then added an extender with ethernet ports on both sides, followed by another 10-meter cable, all using cat 6. currently it delivers 130/40 mbps, while the service plan is 250/100. when testing with my laptop and a 1-meter cable from the router, I got 230/80, which works fine for me. i’m wondering if the signal quality drops significantly at around 35 meters (about 35 yards). it seems unusual that the loss is so high. what should i do?
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Fly_Fishball
01-19-2026, 03:12 AM #1

today i set up a long network cable in my new room. first I used a 25-meter one, then added an extender with ethernet ports on both sides, followed by another 10-meter cable, all using cat 6. currently it delivers 130/40 mbps, while the service plan is 250/100. when testing with my laptop and a 1-meter cable from the router, I got 230/80, which works fine for me. i’m wondering if the signal quality drops significantly at around 35 meters (about 35 yards). it seems unusual that the loss is so high. what should i do?

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Aly_X
Junior Member
22
01-20-2026, 06:22 AM
#2
According to the electrical spec, it performs up to 100 meters. Below that range you should have no problems, and above it it typically won't function properly or may trigger many errors. You can connect the extender shown here: https://smile.amazon.com/Inline-Coupler-...B07DWPW5MJ
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Aly_X
01-20-2026, 06:22 AM #2

According to the electrical spec, it performs up to 100 meters. Below that range you should have no problems, and above it it typically won't function properly or may trigger many errors. You can connect the extender shown here: https://smile.amazon.com/Inline-Coupler-...B07DWPW5MJ

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NinjaTurtleNL
Member
207
01-20-2026, 10:31 AM
#3
It suggests the 130/40 outcome came from another device, not just your laptop. The laptop might have been used with a different cable.
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NinjaTurtleNL
01-20-2026, 10:31 AM #3

It suggests the 130/40 outcome came from another device, not just your laptop. The laptop might have been used with a different cable.

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puddles4
Junior Member
8
01-20-2026, 02:12 PM
#4
I would strongly exclude that particular coupler. Usually they aren't that problematic, but there seems to be an issue with the line. My approach would be: 1. Run each cable through the same PC and check if speeds match closely—no more than a few percent difference. You shouldn’t notice a big gap like before. 2. Then test the coupler using fresh cables and compare the results. In an ideal scenario, you could use Cat6 over 100 meters (~320 feet). If removing the coupler is feasible, I’d do that.
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puddles4
01-20-2026, 02:12 PM #4

I would strongly exclude that particular coupler. Usually they aren't that problematic, but there seems to be an issue with the line. My approach would be: 1. Run each cable through the same PC and check if speeds match closely—no more than a few percent difference. You shouldn’t notice a big gap like before. 2. Then test the coupler using fresh cables and compare the results. In an ideal scenario, you could use Cat6 over 100 meters (~320 feet). If removing the coupler is feasible, I’d do that.