Rj45

[GPR]

I have a 25m length on RJ45 cable from when my computer used to be some distance away, now my computer is only about 4m away and i have rolled up the rj45 like a coil because of the distance, will this make any difference to signal loss like electricity with voltage drop ?.
I did here 15m was really the max that rj45 cables should be run.

[xpod]

I`m no expert but i`m sure the max is about 100m
I run a 30 foot one to my sons room and use a 2 foot one myself and unless your chasing down every last ms i think you`ll be fine.

I certainly dont notice any great difference

EDIT:seems you can have up to 500m if you have the right kinda wire


http://www.homenethelp.com/web/expla...ble-length.asp

Originally Posted by GPR

I have a 25m length on RJ45 cable from when my computer used to be some distance away, now my computer is only about 4m away and i have rolled up the rj45 like a coil because of the distance, will this make any difference to signal loss like electricity with voltage drop ?.
I did here 15m was really the max that rj45 cables should be run.

15m is the recommended max for serial (RS232) leads. UTP (Ethernet 10-BaseT) is up to 100m as xpod says.

The run length of cable isn't the limiting factor as far as I remember. Its all to do with the size of a packet and the time it takes to travel to the furthest most point on the network without going through a switch or router. The NIC uses collision detection to see if there is any data on the network before transmitting. In order for a sending PC to detect that its packet has been transmitted correctly, the furthest most point on the network must have started to recieve the start of the packet before the sending point has finished sending. A switch or router buffers data so networks can be extended further outwards, but I think 200m is approx the distance for an MTU of 1500.
I've not explained that very well. Someone else want to try and word it better?

[GPR]

Thanks for the info.