Path: utzoo!attcan!uunet!wa3wbu!john
From: john@wa3wbu.UUCP (John Gayman)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Maximum Length of a PC Serial Cable?
Summary: shielding reduces length
Message-ID: <608@wa3wbu.UUCP>
Date: 20 Jul 88 00:01:51 GMT
References: <1986@silver.bacs.indiana.edu> <2654@bgsuvax.UUCP>
Organization: WA3WBU, Marysville,PA
Lines: 21

In article <2654@bgsuvax.UUCP>, bear@bgsuvax.UUCP (Michael D. Bear) writes:
> 
> worked with no problem.  The only thing I might reccommend is that if it *is*
> longer than 50', you may want to use shielded cable.

      I beleive the maximum distance is reduced when using shielded cables.
I'm looking at the recent Black Box catalog and all of their distance
ratings are reduced substantually if using shielded cable. I beleive this
is due to the high capacitance per foot actually attenuating the 
signals. Anyone have any real specifics along these lines ?  I beleive there
is a tradeoff as far as using shielded cables to eliminate interferrence
and trying to sqeeze the maximum distance out of an interface.

					John



-- 
John Gayman, WA3WBU              |           UUCP: uunet!wa3wbu!john
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