Wired lan cable trouble.

threedee

threedee

threedee

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Joined
10 Oct 2006
Posts
348
Location
N.I.
Have a situation here.

About 120+m cable is laid, crimped straight, electrical connection is present and correct (according to cheap chinese lan tester), one end plugged into a router, other end in PC laptop - no connection.

Cable is of nondescript origin, solid copper core 10 pair, and now that i think about it its not twisted pair, its just 10 wire cable.

The whole cabley malarkey is not of my doing. I suspect the cable being not TP is way too long for 120+ meters.

Can someone advise me in this situation on how to rectify ?

P.S. Cable is in the ground... cant be replaced easily (or can it ? its in some sort of plastic duct/pipe...)
 
100m is the practical limit for 100Mb using proper UTP/STP, it will be substantially less using non twisted pair cable.

Replacing it would be "easy" - connect one end to a 250m piece of rope and start pulling from the other end. 120m later you'll have the old cable out and rope in the pipe. Connect CAT5 or Cat6 to the rope and continue pulling the rope until both the rope & CAT5/6 appears.

Disconnect the rope and pull the remaining out.

With good quality cable (STP would be better than UTP) you may be able to get 100Mb, if not 10Mb may be the limit (if it works at all). The other option is to get a fibre tube pulled through instead of CAT5/6 and get multi mode fibre blown down the tube - coupled this to a couple of fibre to ethernet converters and you'll get 1Gb.
 
UPDATE: Cable is definitely not twisted pair and is 12 wire straight cable. No markings on outer sheath whatsoever. Checked some 5m of it, cut off 10in of sheath to make sure its not twisted - its not.

Fiber optics are out of the question.

The whole thing is a ballsy bodge job, will be needed replacing. Now i have to figure out what cable to buy and where to buy it. As cheap as possible (yeah, the owner is a bit conservative with his money...)...

At what length the cables on bobbins are sold ? What is the standard cut length i should be looking for ? I'll need 120+m x2 runs (2 locations apprx same distance away, but separate...)

owner is looking for services such as netflix pumped via them cables. So i suspect that its way under 100mbps...
 
The boxes are normally sold in 305 metre reels to my knowledge sometimes you can get more but a 305m box should sort you out.
 
And there i thought i'd get some insight on problem solving for long lan cables :D

On a serious note - any other cheap solutions for ~150m lan ?

Repeaters ? SOme cheap directional wifi ? some other bs to use to get tintertubes across ?
 
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Cant, no and no.

3 separate buildings. Power is very brown here so no it wont work and distance is to great for power thingies to work anyways...
 
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That's probably copper coated aluminium
Unfortunately the good stuff isn't the cheapest

Off the top of my head.. Belden, raydex, draka, pandit, nexans are all decent
 
Decent cat5e 'should' be good enough for 120m ish runs for 10/100
Cat6 is fine. Cat6e is overkill. I'm talking about good quality cable though
Why do you need it shielded?
 
Because at the place of installation MAY BE a large number of bodge electrical jobs, motors, **** old equipment, etc. The whole place is one big bodge job tbh...Long story.

I just want to eliminate all possible factors for failure (short or long term)...

Also, somehow i thought that cat6 would ne somehow better than cat5 in light of my previous statement :D Better materials ?

#Edit# Whats the diff between cat6 and 6e ?
 
The way the cabling guys at work explained it was :
Cat 6 has more twists per inch and a slightly higher copper content in the wire than Cat 5.
Cat 6e is shielded and intended for 50m+ runs of 10GigE.
 
if it's in an underground duct, you'll need duct grade cable, unless the duct is water tight. If it's a duct within a duct then it may well be water tight.

Imagine if you've pulled through shielded cable, terminated the shield properly either end to ground, then you've got a 120m long conductor underground getting wet.
 
Yes, clear line of sight. However the equipment and cable entry out of the supplying building is on the opposite side of where the cables need to go. Which means more cabling inside and some sort of equipment for wifi transmission, etc...
 
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