Path: utzoo!attcan!utgpu!news-server.csri.toronto.edu!mailrus!accuvax.nwu.edu!nucsrl!telecom-request
From: steptech!wally@cse.ogi.edu
Newsgroups: comp.dcom.telecom
Subject: Re: Crosstalk on Two lines on One Four-Wire Cable
Message-ID: <12211@accuvax.nwu.edu>
Date: 16 Sep 90 05:21:50 GMT
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Reply-To: wally@steptech.UUCP (Wally Kramer)
Organization: Step Technology, Inc., Portland, Oregon
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X-Telecom-Digest: Volume 10, Issue 650, Message 6 of 10


In Telecom-Digest: Volume 10, Issue 643, Message 1 of 8)  carroll@
beaver.cs.washington.edu (Jeff Carroll) writes:

> ....  Just running four wires can cause all kinds of undesirable
> electromagnetic coupling between wires that aren't supposed to couple.
 ...

I remember asking a telephone lineman when I was 10 years old or so,
why open wire (in rural areas) sometimes criss-crossed.  He said it
was to prevent crosstalk and went on to explain how crosstalk occurs.

At that time, it was a new concept for me, and I began to notice
crosstalk EVERYWHERE!  (Anyone remember how bad crosstalk was for, say
a 200-mile toll call in 1966?)


   Wally Kramer  Step Technology, Inc.  +1 503 244 1239
 ...tektronix.tek.com!percy!steptech!wally