LAN split ?

ProAsm

Expert Member
Joined
Aug 31, 2003
Messages
2,191
Reaction score
106
Location
Hilton
My PC is 40 meters away from my ADSL Modem/Router connected via a LAN cable as I cannot use wireless.
I need a 2nd PC in my office connected to the LAN without running another 40 meter cable.
How can I do this without using any active device like a switcher/router or whatever, can I somehow split the current cable ?
 
I know you say you don't want to use an active device, but really I'd just buy the cheapest switch available.

You can find a cheap one for ~R150 if you search around.
 
Well you can always install another network card on PC 1 , and then link PC 2 and PC 1 together with a LAN cable and then bridge the connection on PC 1 and allow internet sharing and all that to PC 2. However there's so many things that can go wrong here , i would rather just do the 40m cable thing directly to the router or better yet, get a switch, i mean that is what a switch is for.

Actually what is the reason for not using Wifi ? You get these Wifi Usb sticks for cheap these days, plug it into your PC and off you go?
 
It might be possible. I know for 100Mbps ethernet you only use 4 cables ie. orange and green pairs, so you are still left with the brown and blue pairs. not sure if it will cause interference in the cable as I understand the idea of twisted pair is to reduce interference.
 
My PC is 40 meters away from my ADSL Modem/Router connected via a LAN cable as I cannot use wireless.
I need a 2nd PC in my office connected to the LAN without running another 40 meter cable.
How can I do this without using any active device like a switcher/router or whatever, can I somehow split the current cable ?


Powerline Networking.

look around on google, or PM me if you need further information.


edit: my bad, you want to split the cat5 cable. yes, this can be done, I cant remember how to do this, sorry.

there are 8 wires in the cat5 cable, a connection only needs 4. you can have 2 x RJ-45 connections on both ends of one cable.

with a bit of research you will find a guide online, but I still do no recommend it. lately there are better ways to do this.


edit2: after some pondering, I remember that the 8 cables inside the cat5 are split into 2, 4 is used for data the other 4 for PoE. 1-2-3-6 is used for data. so that means 4-5-7-8 is still available.

you will need a crimping tool and a diagram(or some savvy) to do this, or hire an IT technician to do it for you, unless you are one...
 
Last edited:
While technically feasible to use one cable to do 2,i'd rather just use a hub at the one end and cable from it to the 2 devices
 
A switch will be the easiest R100.
With the splitter may be you will pick up interference.
 
Thanks for the replies.

@Deadmanza, thanks for the link, did not know such a thing was available.

Regarding using a switcher.
I used to have this but the harmonic interference on my radio's is unbearable.
This is also the reason I am 40 meters away from my modem and 20 meters away from my DSTV PVR Decoder :)
I had to try several power supply's for my PC before I found one with minimal interference.
http://www.proasm.com/zs5qm/
 
Thanks for the replies.

@Deadmanza, thanks for the link, did not know such a thing was available.

Regarding using a switcher.
I used to have this but the harmonic interference on my radio's is unbearable.
This is also the reason I am 40 meters away from my modem and 20 meters away from my DSTV PVR Decoder :)
I had to try several power supply's for my PC before I found one with minimal interference.
http://www.proasm.com/zs5qm/



aah well, then stay far away from powerline networking. not good for radio guys.
 
Thanks for the replies.

@Deadmanza, thanks for the link, did not know such a thing was available.

Regarding using a switcher.
I used to have this but the harmonic interference on my radio's is unbearable.
This is also the reason I am 40 meters away from my modem and 20 meters away from my DSTV PVR Decoder :)
I had to try several power supply's for my PC before I found one with minimal interference.
http://www.proasm.com/zs5qm/

Firstly, it's a Switch not a Switcher.

Secondly what kind of device did you have before because it sounds way too heavy duty if it causes interference. A normal el cheapo 5 port switch is so low power and so low output it shouldn't even register.
 
Quite some setup you have there ,i was an amateur many years ago ,Your whole setup looks very well laid out especially your antenna cabling .
You could also shield a switch with some tin foil if you pick up interference.
 
Unfortunately modern equipment all use switch mode power supply's these days and that's where the problem lies whereas older stuff used linear and that had no radiation at all.
Even a small cellphone charger these days causes havoc when near radio's.
I have a 8 port switch (CNet) which caused havoc here and had to remove it.
Basically I now have my Laptop next to the Modem (40 meters away) and connect to it using TeamViewer but would prefer it next to me.
 
Perhaps just get a better radio with the new switch :P

You will have much more issues using 1 cable for 2 computers, possible but noise/interference is much worse
 
eish guys.. lol


proper radio equipment is extremely sensitive



no use telling him to get this or get that, a long cable to the device is his best bet for lowest interference from switching equipment..


1 White/Orange
2 Orange
3 White/Green
4 Blue
5 White/Blue
6 Green
7 White/Brown
8 Brown


RJ45's flat side facing you. clip thingy facing down. wire numbers/colors from left to right


Plug 1 use 1-2-3-6 - make sure they are the same at both ends.

Plug 2 use wires 4-5-7-8 in RJ45 plug holes same as plug 1- make sure they are the same at both ends.

hope that makes sense


and bobs your uncle.
 
Last edited:
Will maybe try that, but maybe a 2nd 40 meter cable will probably be the final answer :)
Oh! btw, radios like mine average around R35k each these days.
 
Will maybe try that, but maybe a 2nd 40 meter cable will probably be the final answer :)
Oh! btw, radios like mine average around R35k each these days.

Hey Man,

I know you dont want to hear this - but I think the cause of your interference was not the power supply, but instead the ethernet cables :)

This is how I would set it up to avoid interference with your radio equipment.

ROUTER-----------1-------------SWITCH ---2-----


1: Cat5e Unshielded Cable
2: Cat5e Shielded Cable

The shielded cable will help get rid of the interference caused by the unshielded cable :)

This should work - as I know my friend who is in the amateur radio field had this exact issue when ADSL was installed- they had installed unshielded cables which let off high amounts of interference :)
 
Will maybe try that, but maybe a 2nd 40 meter cable will probably be the final answer :)
Oh! btw, radios like mine average around R35k each these days.


correct, another cable will be the best option for you.

and as Zertop said, make sure its shielded cabling.
 
Top
Sign up to the MyBroadband newsletter
X