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Posting-Version: version B 2.10.2 9/18/84; site watcgl.UUCP
Path: utzoo!watmath!watcgl!dmmartindale
From: dmmartindale@watcgl.UUCP (Dave Martindale)
Newsgroups: net.audio,net.video
Subject: Re: Video connecting Cables
Message-ID: <917@watcgl.UUCP>
Date: Wed, 9-Jan-85 12:18:41 EST
Article-I.D.: watcgl.917
Posted: Wed Jan  9 12:18:41 1985
Date-Received: Thu, 10-Jan-85 07:09:56 EST
References: <117@lcuxc.UUCP> <1466@ritcv.UUCP>
Reply-To: dmmartindale@watcgl.UUCP (Dave Martindale)
Organization: U of Waterloo, Ontario
Lines: 21
Xref: watmath net.audio:3753 net.video:870

In article <1466@ritcv.UUCP> jeh@ritcv.UUCP (Jim Heliotis) writes:
>I just had a surprising experience.  I bought a new TV, and saw that there was
>a slight duplicate shadow on each one of my local stations.
>
> [section describing diagnosis of problem]
>
>I then replaced my rather nice-looking 75ohm cable (I got it with my VCR; it
>has quick-disconnect F-connectors) with another shoddy-looking one that my
>cable company had given me, and voila', the problem disappeared!!

The "shadow" was an image due to a reflected copy of the signal reaching
the TV a bit delayed from the original.  The reflection was due to improper
termination of the signal somewhere.  Since the signal was getting through,
it must have been a poor ground connection at one end of your new cable.

The only thing that F-connectors have going for them is that they cost
so little.  They are awful connectors.  I wish that the industry had
standardized on something like BNC - they aren't that much more expensive,
are quick-connect, lock in place, and don't fall off the cable ends so
easily.  The "quick-connect" F-connectors give you convenience, but at
the expense of everything else.  Yechh.