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Article #1037Re: 10T and number of twists per foot.
From: Dan Pike
Date: Sun, 24 Jan 1993 22:45
Date: Sun, 24 Jan 1993 22:45
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In article <slendt.105.727652267@unomaha.edu> Steven Lendt, slendt@unomaha.edu writes: >How many twists per foot in solid core unshelded twisted pair wire are >needed to make it live up to level 3 10baseT spec? >Also, how many punch blocks (old 66 type) is it safe to go through if the >total wire length is not greater than 75 meters? I'm pretty sure the recommended number of twists per foot is 7tpf. As far as the punch block question goes, when I was working at Apple we figured out that each punch on a 66 block added the equivalent of about 20 feet of cabling. This wasn't any scientific testing though. I think we measured it with a TDR. -Dan
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Path: arc1-ca.pugleaf.net!sparky!uunet!olivea!charnel!dan-mac.csuchico.edu!dpike From: dpike@oavax.csuchico.edu (Dan Pike) Newsgroups: comp.dcom.lans.ethernet Subject: Re: 10T and number of twists per foot. Message-ID: <1jv672INNii6@charnel.ecst.csuchico.edu> Date: 24 Jan 93 22:45:54 GMT References: <slendt.105.727652267@unomaha.edu> Organization: California State University, Chico Lines: 15 NNTP-Posting-Host: dan-mac.csuchico.edu X-UserAgent: Nuntius v1.1.1d9 X-XXMessage-ID: <A7885DF4CA011014@dan-mac.csuchico.edu> X-XXDate: Sun, 24 Jan 93 21:53:40 GMT