On 06/11/05, James Knott <james.knott@rogers.com> wrote:
Kevanf1 wrote:
On 05/11/05, James Knott <james.knott@rogers.com> wrote:
pelibali wrote:
Hi,
I found several unofficial values, how long can be the longest RJ45 network cable. Few sites listed about 12 meters, but I saw 20 meters and also 300ft as well; later being in fact around 90 meters (!).
Could someone pass me please to the correct direction, where some exact (~official) theoretical/practical details are listed?! The maximum copper cable distance is 100M. Fibre can go much further.
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Ypu also need to make sure any bends are just that and not acute kinks. If you have to go round a corner make sure the cable takes the longest possible route to do so. i.e make it a long sweeping curve rather than a 90 degree angle. cat5(e) cable can be very easily damaged yet you wouldn't know it by looking at it.
While the above is true, it's not relevant to the question.
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Why not? We don't know the full in's and out's of the question. We have been asked the maximum length of a network cable. Ok, but how many network cables actually run from point A to point B without any turns? Not many. So any bends really do need to be taken into account as they will cause a degradation of signal if they are not taken into account properly. It may seem silly but I have actually experienced a cable near to its theoretical maximum length that failed sending a signal. We took some rather sharp bends (not kinks or we would have changed the cable entirely) out and hey presto, full signal to a workstation. -- ============================================== I am only human, please forgive me if I make a mistake it is not deliberate. ============================================== Take care. Kevan Farmer 34 Hill Street Cheslyn Hay Staffordshire WS6 7HR