101–110 of 250 posts
1. High-level, the post is all wrong. The point should be that you always need to make sure you can pull new cable . The poster illustrates this: single mode, multi mode, non-fiber, etc, etc. And if one "goes bad", you still can't run a new one, unless you have a pullstring. 2. The post cannot apply to fast/large networks - will be prohibitively expensive. 3. If running a few at home, I suggest to run MTP/MPO. It's b…
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Dont forget Powerline adapters - if you have it all on one loop they are surprisingly effective if you have extra power sockets!
If you go that route MOCA over your cable tv coax works very well too!
Yeah, we got a new house built 4 years ago and one of the biggest regrets is not enough ethernet outlets (running fibre in the house isn't practical yet) and power outlets in various places. It is really hard to think of all the places you would want them ahead of time unfortunately and as each has a cost you don't want to incur it unnecessarily. But my biggest regrets were: - Only a single ethernet port in the basem…
That's why pretty much every office space/building over here has cable trunking/channels on the walls instead of fixed wiring, eg: https://www.elba.si/izdelki/parapetni-kanali/ https://www.obo.si/izdelki/izdelkiinstalacije-v-zgradbah/bis... Need one more outlet? Remove the plastic cover, insert cable, insert outlet, cut the plastic cover to make space for outlet, and you're done.
There's a wood effect version, but I suspect it would make a home look like a 1980s office: https://homemaster.techinfus.com/en/kabel-kanaly-vidy-i-razm...
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It's interesting how long twisted-pair cabling has stuck around, to the point that it's associated as being the physical medium for Ethernet. Ethernet started with coaxial cables, but soon lost its association with those as twisted-pair was cheaper & easier to work with. And it's stayed that way for so long that a CAT-5 cable with RJ-45 (really RJ-38 but that's excessively pedantic) connectors is an "Ethernet cable",…
I've been in software for decades, and it was only right now that I realized that what I'm calling "ethernet cable" is maybe something else. Not that I understand the finer details of what you're saying.
Specifically these:
- https://en.wikipedia.org/wiki/10BASE5 (early 1980s)
- https://en.wikipedia.org/wiki/10BASE2 (mid 1980s, cheap installations like my high school in the early 1990s).
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Though if it is on or under the surface of the earth, “straight” will be a bend radius of around 6,370km. We don’t make a lot of buildings that deal with this but transcontinental or transoceanic cables certainly do. If someone designed a fiber that required absolutely no bend in order to work you’d have to use it in buildings or dig much deeper holes. There was an encoding mechanism proposed about 10-15 years ago th…
If you’re using the planet as your “flat surface” then sure. If, however, you’re willing to deal with exiting the atmosphere at each end, you can use Real Straightness. But I don’t know anyone running a single segment for that distance.
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It's interesting how long twisted-pair cabling has stuck around, to the point that it's associated as being the physical medium for Ethernet. Ethernet started with coaxial cables, but soon lost its association with those as twisted-pair was cheaper & easier to work with. And it's stayed that way for so long that a CAT-5 cable with RJ-45 (really RJ-38 but that's excessively pedantic) connectors is an "Ethernet cable",…
I've been in software for decades, and it was only right now that I realized that what I'm calling "ethernet cable" is maybe something else. Not that I understand the finer details of what you're saying.
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> You can also get baseboards (that look nice in a home) then double as cable runs. Interesting. That would be great in the basement. I will look into it.
Dont forget Powerline adapters - if you have it all on one loop they are surprisingly effective if you have extra power sockets!
In my small apartment in Denmark, with new wiring, they are terrible. I get about 30-50Mb/s rather than the advertised 1200Mb/s. I assume the signal has to go back to the distribution board to get between my adapters.
— Joseph Bazalgette, on doubling the pipe diameter when building the London sewer system
(though I don't have an original source for that quote)
Yup, always run extra everything. At least you can splice fiber now. And be careful of the minimum bend radius. Once, in the 90s, we were having intermittent network failures in our data center. I kept trying to troubleshoot it with the fluke, but the problem kept moving. When I pulled up the raised floor, I discovered that rats were eating the exterior sheath of the network cables. That was some fun troubleshooting!
_minimum_ bend?
I guess you could call it "the maximum sharpness tangency" or something like that, but that's not the standard verbiage.
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If you’re using the planet as your “flat surface” then sure. If, however, you’re willing to deal with exiting the atmosphere at each end, you can use Real Straightness. But I don’t know anyone running a single segment for that distance.
I’m sure there are some microwave antennas still out there doing the Lord’s Work. At least in the Plains states where hills are low and putting antennas on two of them gives you some extra distance. How far do microwaves bend over the horizon?
that depends on the weather and frequency among other things