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Article View: comp.dcom.modems.cable
Article #375

Re: running network cable through windows and walls?

#375
From: Daniel Erskine
Date: Wed, 19 Aug 1998 00:00
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Theron Hicks wrote:
> Dan,
>     You are _extremely_ lucky.  The "f" type connector is a 75 ohm connector.
> Coaxial ethernet (10 base-2) type connections are 50 ohm connections.  If you wire
> a 50 ohm ethernet connection with 75 ohm cable it should _not_ work.  If you are
> lucky it may function but not on a consistent basis.  I expect that you are
> dropping packets like crazy.  Lest someone claim that I am crazy I can state that I
> have had to trouble shoot networks where someone has used 75 ohm cable.  The
> problem is very difficult to locate as the 2 cables look quite similar.  In you
> case the section of your system which is 75 ohm may be short enough (in length)
> that it manages to work but this is _not_ a recomended practice.
> 
> Daniel Erskine wrote:
> > Greetings:

>>> <<< SNIP >>>

> > If you try this, you *might* want to use differing color CATV plates, so
> > that you want accidentally plug a TV, descrambler, VCR, etc. into it ;(
> > You will want this setup to NOT connect into your existing CATV lines, as
> > something will probably get FRIED!

>>> <<< SNIP >>>

> > Hope this helps,
> > Daniel W. Erskine            "mailto:erskined@gte.net"
> > (314) 515-1406       "mailto:netsup75@edwardjones.com"

Greetings:
  I wouldn't think this (above) would make me "_extremely_ lucky", just
*VERY*
cautious!  I NEVER connected the 50ohm 10b2 into the 75ohm CATV network! 
Both
"networks" are self-contained, or atleast the PC network is ;)
  Based on your observation, YES combining both networks should not work at
all!
A friend of mine told me one of infamous "school-of-hard-knocks"
war-stories
about doing this exact same thing... Aaa-ack!

Sorry, I did not clarify this better!
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    THE PRECEDING REFLECTS THE VIEWS OF THE AUTHOR
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Daniel W. Erskine            "mailto:erskined@gte.net"
(314) 515-1406       "mailto:netsup75@edwardjones.com"
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From: Daniel Erskine <netsup75@edwardjones.com>
Subject: Re: running network cable through windows and walls?
Date: 1998/08/19
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