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Article #346

Re: running network cable through windows and walls?

#346
From: Daniel Erskine
Date: Mon, 31 Aug 1998 00:00
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Aaron Blosser wrote:
> On Fri, 21 Aug 1998 11:07:04 -0500, Daniel Erskine
> <netsup75@edwardjones.com> said:
> 
> >> Using existing 75ohm coax as if
> >> it was 50ohm coax (with F to BNC adapters) is asking for trouble.
> 
> >  I'll inquire with my network staff for more research material, as
> >I'm curious as to why 75ohm cable would be that much of a problem?!?
> 
> I wonder as well.
> 
> 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.
> 
> Of course, this all depends on how senstive the receiving equipment is,
> and I can't make any claims to know how it would really affect the
> performance.
> 
> The reason you *should* use properly rated cable is because with
> impedance matching you can achieve maximum power output.

Greetings:
  Here's another thought!  Is there a 50ohm-to-75ohm converter
or filter on the market?  If so, is it bi-directional?  Maybe
buying something like this would cut this news-thread short ;)

Thanx...
------------------------------------------------------
    THE PRECEDING REFLECTS THE VIEWS OF THE AUTHOR
   AND NOT, NECESSARILY, THE VIEWS OF EDWARD JONES.
------------------------------------------------------
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: 1998/08/31
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