Article View: comp.dcom.modems.cable
Article #346Re: running network cable through windows and walls?
From: Daniel Erskine
Date: Mon, 31 Aug 1998 00:00
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...
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THE PRECEDING REFLECTS THE VIEWS OF THE AUTHOR
AND NOT, NECESSARILY, THE VIEWS OF EDWARD JONES.
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Daniel W. Erskine "mailto:erskined@gte.net"
(314) 515-1406 "mailto:netsup75@edwardjones.com"
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: fa874,4e89f3904072fcfe X-Google-Attributes: gidfa874,public X-Google-Thread: 113850,4e89f3904072fcfe X-Google-Attributes: gid113850,public X-Google-Thread: 1159e3,4e89f3904072fcfe X-Google-Attributes: gid1159e3,public From: Daniel Erskine <netsup75@edwardjones.com> Subject: Re: running network cable through windows and walls? Date: 1998/08/31 Message-ID: <35EACDBE.237D36B8@edwardjones.com> X-Deja-AN: 386471197 References: <6rcoho$284$1@nnrp1.dejanews.com> <35DB30FF.579C273E@edwardjones.com> <35DBABFD.15FB7483@nojunk.net.crap> <slrn6tp9oi.em3.danco@pebble.org> <35DD9B28.4FC620A7@edwardjones.com> <35e6319c.53011606@news.lakwod1.co.home.com> Content-Type: multipart/mixed; boundary="------------46B17197B9E8D1930020AAFD" Organization: Edward Jones & Co. Mime-Version: 1.0 Newsgroups: comp.dcom.modems.cable,ba.internet,alt.home.repair