Wiring a CAT5e home network

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Hi The Natural Philosopher In you wrote:

You can get a whole lot more than that in one fibre! 100x 2.5Gbps channels (wavelength division multiplexing). Way over the top for home use. 10Gbps is probably more in the DIYer's range.
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Fishter
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Fishter wrote:

I wasn't going to complicate things with WDM. :-)
AND the MUX gear is not cheap for that. Last time I checked a single SDH circuit was up to about 8Gbps. That's expensive enough!
BTW I think you meant 10Mbps for d-i-y, not 10Gbps. 10 GBPs is probably the total UK internet bandwidth ;-)
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wrote:

It's a touch more than that. ;-)
There is considerable fibre capacity under the Atlantic that was built during the .com boom and has never been lit.
Under some London streets, especially around Docklands, there is so much fibre, that if it ever were lit, the paving slabs would glow.
.andy
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Andy Hall wrote:

You misunderstand. I didn;t say maxiumum fiber bandwidth, I said maximum uK internet bandwidth.
Last time I talked to the ISP's it was a couble of 100Mbps peering links between ISP's in Telehouse etc. I think its getting to be fibers now, but they aren't running their internationals much more than a few hundred Mbps at the moment AFAIK.

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wrote:

No I knew what you meant .
The operational internet bandwidth is also considerably more than 10G today for direct transAtlantic links, and if you count bandwidth accessible via peerings to locations elswhere in Europe, even more than that.
Of course the effect that an individual user might see will depend on the destination addresses of given accesses. It will also depend on the transit and peering agreements that the ISP has. In the earlier days of the internet when most capacity was provided by research and academic organisations, routes were determined predominantly on technical "cost" and merit of the routes. Nowadays there is a considerable commercial factor based on peering and transit agreements that determines which routes and capacity are available to given ISPs.
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Hi The Natural Philosopher In you wrote:

Fingers faster than brain ;-)
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Hi Fishter In you wrote:

And Again! I meant to write 1Gbps (with Gigabit Ethernet).
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As explained in another post, there's always more effective capacity for shifting signals around if you actively guide them (through cable) than if you radiate them through free space (even if you try to do it directionally). There'll always be an economic tradeoff between fixed wiring (higher up-front cost, larger ultimate capacity, cheaper interfaces, longer-lasting infrastructure) and wireless stuff (less up-front cost, incremental cost greater, data rate limited to whatever you buy first time round). It's naive to suggest that fixed copper/fibre is going away any time soon. For home use, many may find wireless more convenient; but it's kinda self-limiting, as more and more devices crowd into that little bit of "no-license-needed" spectrum around 2.4GHz.
Stefek
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for
before)?
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Haven't come across this before. Can you say a little more about video via Cat 5, please? What adaptors? Where / price? Or a URL?
TIA
-- Martin
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via
Eh !!!! You haven't heard of it ? You want to buy a system ? :-))
Seriuosly though, it's been available for many years.
http://www.scene-double.co.uk/sdlink.htm
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Will think about that, thanks, but by all means send me one for "field trials". I'll then report back in a couple of years ;-)

Thanks, Pillow Bag and Stephen.
I hadn't stopped to think about the word "video". Have I understood the links correctly in thinking that squirting the (analogue) video o/p from my VCR to a tv via Cat5E is not really feasible?
-- Martin
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It's feasible technically, but the price of the necessary kit is (well) over the top. There's nothing deeply, inherently exotic about the kit, it's little more than a couple of well-built specialist miniature transformers. But they're made in small quantities and used only in "professional"/commerical/industrial situations (where there happens to be a ton of Cat5e already installed) that it's much more cost-effective, for domestic video distribution, to put in a couple of lengths of decent-quality coax, which domestic kit is all set up to feed. If you already have the Cat5e in place, can't face recabling, and fancy a go - by all means spend the money...
Hope that helps - Stefek
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etc.
video
my
You can use UTP CAT5 Cable through the SCART connections to transfer video and sound from any other appropriate outputs on other appliances. It is more convenient than running separate coaxial and data cabling if you want to use remote switching of receiver boxes and things, but, as you have already quest, the appliances have to be compatible with each other to make it work fully.
It's also possible to take the output for the Audio and PC monitor, PS/2 or S-Video output to the SCART socket over UTP CAT5 Cable if you want to show DVD's from the PC and save yourself buying a separate player for under the Tele'.
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make
or
That's really helpful - as usual. Many thanks, BW (and since you were writing in the middle of the night, perhaps Pillow Bag should now be "Big Owl - Pal" ?!)
Have to embark on major re-wiring shortly - you've provided some great ideas, if I can face channelling all those walls :-(
-- Martin
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video
want
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That's the only bad thing about it. The cables, any cables, don't install themselves. Now if someone were to come up with an idea like a self installing system, it would make life a lot easier, Eh ?. :-))
Good luck with it.
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I had no idea this was possible - do you know where I can find more details about exactly how to do this? I'm interested in using my PC to record video, and play back on the TV in the next room (which is already connected by CAT5).
Cheers David
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or
show
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A web search for "SCART to PC" or "PC Monitor to SCART" and variations of, brings up a few sites with loads of information. Look out for a switching box that connects a mass of units together and can distribute them to each other and does loads of magic tricks with video and audio. And for the work it can do, I think is somewhere in the region of 100 GBP's, so it ain't to expensive really.
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Baluns, for feeding the 300MHz baseband video signal over twsited-pair. Canford Audio will happily add to your debt burden at about 80 quid a pop (you need a pair, so that's 160 quid; probably plus VAT). Canford Cat not to hand, so price is ballpark from memory. In the spirit of uk.d-i-y, someone (Mr Liquorice, mayhap) may soon be along to tell you exactly which pair of transformer-looking-affairs from the guts of a 45-quid Asda video recorder would perform almost as well ;-)
HTH, Stefek
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On 1 Oct 2003 08:58:04 GMT, snipped-for-privacy@hp.com wrote:

Not me squire. I can't see why a video recorder would need video baluns to start with. However on Canford...
They have a range available:
2 x audio 76.94 4 x audio 117.50 1 x video 36.63 3 x video 108.30 1 x video, 2 x audio 77.85 2 x video, 2 x audio 92.24 1 x S video, 2 x audio 130.70
All above sold as single units, two required to complete a link.
1 x VGA to 1 monitor 252.00 1 x VGA to 2 monitors 396.20
As a set of send and receive units, inc PSU for the 2 monitor version.
Distances & Bandwidth:
Audio: 750m (10Hz to 20kHz) Video, composite: 675m (DC to 60MHz) Video, Y/C: 600m (Flat to 60MHz) Video, RGB: 150m (Flat to 60MHz) Video, VGA: 105m (Flat to 60MHz) Video, Broadband: variable 200 to 55m (20MHz to 850MHz)
Prices plus delivery and VAT.
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Cheers snipped-for-privacy@howhill.com
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