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10mbps over 1km on a single pair of wires

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Re: 10mbps over 1km on a single pair of wires

#4
post #3

So I built a tiny single pair Ethernet bridge (10BASE-T1L) that can transmit 10mbps over a kilometer on a single pair of twisted copper wires. Would love to get some feedback for the next iteration

Is this full duplex?

Yep full duplex

Re: 10mbps over 1km on a single pair of wires

#5
DSLs were capable of at least 8Mbit/s speeds close to 20 years ago. I worked for a small ISP and where were more than 100 meters (theoretical limit for cat5) between residential buildings, we were setting up 8 modems on a single UTP cable. With home internet speeds back then it wasn't a bottleneck.

Re: 10mbps over 1km on a single pair of wires

#7

So I built a tiny single pair Ethernet bridge (10BASE-T1L) that can transmit 10mbps over a kilometer on a single pair of twisted copper wires. Would love to get some feedback for the next iteration

> Any application requiring a simple, low cost, robust connection between physically disparate devices

At $195 it's definitely not low cost.

Re: 10mbps over 1km on a single pair of wires

#8
post #5

DSLs were capable of at least 8Mbit/s speeds close to 20 years ago. I worked for a small ISP and where were more than 100 meters (theoretical limit for cat5) between residential buildings, we were setting up 8 modems on a single UTP cable. With home internet speeds back then it wasn't a bottleneck.

Wait, can DSL modems talk to each other instead of a DSLAM line card?

Re: 10mbps over 1km on a single pair of wires

#9

Some questions: 1. Would you need two of them at a $430 cost for this? 2. If so would the person be much better with alternative solutions like fixed wireless or Ethernet-VDSL2 conversion that would deliver much better performance at this price point?

The economics in buying this is whether re-running the 1-km of copper with whatever media you want will cost $430 or less.

I think just rolling a telecom truck will cost you this.

Re: 10mbps over 1km on a single pair of wires

#10
It seems that single mode fiber is king for long distance cable runs now, nevermind that it can push gigabits. What kind of cable would this be and is it actually much cheaper? My impression is that most cost of cabling now is the labor to run it as opposed to the medium, but I'm a neophyte for sure.
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