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Article #374

Re: running network cable through windows and walls?

#374
From: Smith and O'Halloran
Date: Sun, 30 Aug 1998 00:00
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In article <35e6319c.53011606@news.lakwod1.co.home.com>,
Aaron Blosser <blosser@home.com> wrote:
>On Fri, 21 Aug 1998 11:07:04 -0500, Daniel Erskine
>For short runs of cable, I highly doubt that using 50ohm vs. 75ohm would
>make a difference.  That measurement is a measure of the cable's
>impedance over some distance (1000 ft?), so for a short bit of maybe
>50-100 ft, the difference *may* be neglible.

Oh, it does make a difference.  Even a two-inch length of the wrong
cable causes reflections.  The characteristic impedance of a cable
is the same as value of the resistor that can terminate the cable without
causing reflections or anti-reflections; it has nothing to due
with the length of the cable.
	-Joe
-- 
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From: inwap@best.com (Smith and O'Halloran)
Subject: Re: running network cable through windows and walls?
Date: 1998/08/30
Message-ID: <6sdefd$jqn$1@shell3.ba.best.com>
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