Hi Dave, Your logic seems correct on the surface, however the CAT5 standard also states the number of twist per pair, and the placement of the different twists, on the ends also contribute to the minimizing of "crosstalk". If you aren't attempting to be strict to the standards, then any wiring will work on the jacks.. understanding that signal attenuation, and crosstalk, and capacitance between pairs, and inductance between pairs, will be affected, such that the nominal signal attenuation, as stated for 100ft, will not be attained.
Have a great day, --... ...-- Dale - WC7S in Wy ________________________________________ From: Elecraft <elecraft-boun...@mailman.qth.net> on behalf of David Robertson <kd1na...@gmail.com> Sent: Monday, May 9, 2016 7:55 AM To: kenin.sto...@mediacombb.net; Elecraft Subject: [Elecraft] RJ45 Kevin, Thanks for the information on the RJ45 standards. what confuses me is there are 6 pair of wires in a CAT 5 cable. In the standards you list, the only difference is the placement of the Orange/Orange-White and Green/Green-White pair of wires. As long as you maintain the same standard or a standard you create on BOTH ends of the CAT 5 cable this cable could be used anywhere, regardless of the system used. I understand that maintaining a standard of wire color codes is important for tracing and troubleshooting purposes. From: Kevin Stover <kevin.sto...@mediacombb.net> To: elecraft@mailman.qth.net Cc: Date: Mon, 2 May 2016 18:50:46 -0500 Subject: Re: [Elecraft] K3S RJ-45 Pin Alignment The standards go thusly. TIA/EIA 568-A (T568A) Pin 1 - white / green stripe Pin 2 - green Pin 3 - white / orange stripe Pin 4 - blue Pin 5 - white / blue stripe pin 6 - orange pin 7 - white / brown stripe pin 8 - brown TIA/EIA 568-B (T568B) Pin 1 - white / orange stripe Pin 2 - orange Pin 3 - white / green stripe Pin 4 - blue Pin 5 - white / blue stripe Pin 6 - green Pin 7 - white / brown stripe Pin 8 - brown -- Dave Robertson KD1NA ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to daleput...@hotmail.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
