On Wednesday, February 18, 2015 09:32:42 PM Dan Purgert wrote: > On Wed, 18 Feb 2015 20:46:20 -0500, Gene Heskett wrote: > > On Wednesday, February 18, 2015 07:01:19 PM BUCH wrote: > >> [...] > > > > ...sure learned a lot about installing the plugs on a piece of cat5. > > > > Cheers, Gene Heskett > > Good stuff in the whole post. Point of contention -- if the BUCH is > only using cat5 in his install, the fact he's getting gbit for any > time at all is a miracle. Min requirement for gig over copper is 5e > (with cat6 being preferred). > > Not that anything you stated was wrong Gene. Just figure he might come > back saying he terminated his cat5 runs perfectly, so that they can't > be the problem. ;) > > -Dan
That has proven to be the case. Folks cannot seem to understand that how they have been doing it is wrong. Until they actually see one done right. Ideally, the twisted pair is still twisted inside the plug. We played with plug styles extensively and wound up using one that lets the surplus wire stick out the front of the plug, to then be shaved off flush, and a rear gripper crimp that was spaced at the correct space away from the IDC connection so it allowed one half twist from where it was gripped for strain relief to the IDC parts of the plug, in that manner the twist could continue clear to the IDC metalic contacts. That can't but help to alleviate the bump in the VSWR that you can see plain as day if you have a TDR. (Time Domain Reflectometer, Tek used to sell one for several thousand USD.) You can make a poor one for a $20 bill if you've a mind to and have a 100 mhz or better scope to look at the results. A gigahertz will give you better distance to damage results but I have used the $20 version to tell a tower crew where to take the line apart when looking for a burned up bullet in 1000' of line. I missed it by one joint, the tek scope was out of calibration at the 1 u-sec/division scan rates. :) That FWIW, is NOT anything new for Tek. I have a Hitachi v1065 that is after 25 years, as accurate as a new tek. And has more usable bandwidth, not to mention a heck of a lot sharper crt. And AIR the cable in question was cat5e. We went thru about a dozen 1000' spools/boxes of it by the time we had put the ladders away. What I have here is some of the left overs. I believe when Jim laid out the 10 Gb inhouse net, I believe I saw a 1000' box of cat6 under the workbench. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/201502190017.17754.ghesk...@wdtv.com
