cable limit

[Ronnie Gauthier]

On Mon, 15 Oct 2007 14:04:16 -0500
Vu Pham <vu at sivell.com> wrote:

> I need to connect two devices which are about 500 or more feet apart.
> Wireless is not possible in this environment. So I think I am going to
> use the RJ45 cable with T1 modules at two ends. I tried this with short
> distance for testing the T1 ( with one end provides the sync clock ) but
> I don't know how long I can extend the cable in this case ?
> 
> Any other option I can try ?
> 

It is said that ethernet can be used up to 100M. I have found that it 
is not really practical to go that far and that degradation occurs in 
as little as 25M depending on the interferences. The solutions are to 
eliminate interference and/or increase the power as increasing the wire 
size is not practical for ethernet. The URL below sells ethernet 
extenders, http://www.netsys-direct.com/products.php?cat=7

Ronnie