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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

#41

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?

Further more, why would someone choose this over $59.69 a pair fiber ether net media converter, up to 20KM, 1000Mbps from TP-LINK? There are most likely cheaper options from other vendors.

https://www.aliexpress.com/item/1005001435649462.html

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

#46

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.

> It seems that single mode fiber is king for long distance cable runs now, nevermind that it can push gigabits.

Bandwidth isn't the only consideration: you can deliver power over copper:

* https://en.wikipedia.org/wiki/Power_over_Ethernet#PoDL

* https://www.ti.com.cn/cn/lit/an/snvaa25/snvaa25.pdf

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

#47

Earlier quoted context omitted.

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

Not a traditional dsl modem, but these work well using dsl technology: https://www.amazon.com/Tupavco-Ethernet-Extender-Kit-Repeate...

That's pretty cool. The specs look like this is both faster and cheaper than the main link of this thread, unless I'm missing something?

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

#48
post #21
post #7

Earlier quoted context omitted.

> Any application requiring a simple, low cost, robust connection between physically disparate devices At $195 it's definitely not low cost.

What's the difference in price between 1km of fiber vs 1km or single pair wire? It might play a role in this solution being cheaper than immediately apparent.

The fiber is much cheaper because it's so much more common.

For example: I/O fiber is about 0.10 cents a foot or less for 2 fiber cable. (12 fiber is only 20 cents a foot).

OSP gel-filled direct burial is 0.55 cents a foot or less for 2 fiber cable. (12 fiber is only 65 cents). This is micro-armored OSP cable, resistant to chewing/damage as well.

Basic 18 awg single pair shielded direct burial wire is about 0.80 cents a foot. Can't even find a non-expensive armored version

10km single fiber transceivers at 10gbps are 40 bucks.

10km dual fiber transceivers at 10gbps at 29 bucks.

It would be much cheaper, more effective, and a better result to just use fiber for 1km here.

You could easily bury 12 fiber cable and use it for the price you will pay to use single-twisted-pair.

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