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From: gnome@olivee.UUCP (Gary Traveis)
Newsgroups: net.video
Subject: Re: Re: Help! My VCR has gone into Orbit!
Message-ID: <316@olivee.UUCP>
Date: Wed, 10-Apr-85 17:18:08 EST
Article-I.D.: olivee.316
Posted: Wed Apr 10 17:18:08 1985
Date-Received: Sun, 14-Apr-85 02:42:17 EST
References: <1503@decwrl.UUCP> <627@vortex.UUCP>
Organization: Olivetti ATC; Cupertino, Ca
Lines: 20

> "Aging" of recordings (usually resulting in tracking noise) can
> be the result of several factors:
> 
> 1) Temperature variations that stretch/warp the tape over time.
> 2) Poor quality tape.
> 3) Use of very slow recording speeds (makes (1) and (2) much worse).
> 
> In all three cases, the real problem is that the timing track is being
> warped over time.  Generally, this problem comes up more frequently
> with VHS than Beta machines, since the VHS load/head pattern 
> puts much more stress on the tape than the Beta pattern.
> 
> --Lauren--

Don' forget plain-old tracking error!   Assuming the deck's tracking
has drifted, the older tapes will be skewed to either side of the
tracking adjustment "0" mark.  Too far, and they get noise no matter
how far you offset the tracking adjustment.

Gary