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From: lauren@vortex.UUCP (Lauren Weinstein)
Newsgroups: net.video
Subject: Re: Help! My VCR has gone into Orbit!
Message-ID: <627@vortex.UUCP>
Date: Sun, 7-Apr-85 17:55:40 EST
Article-I.D.: vortex.627
Posted: Sun Apr  7 17:55:40 1985
Date-Received: Wed, 10-Apr-85 06:11:47 EST
References: <1503@decwrl.UUCP>
Organization: Vortex Technology, Los Angeles
Lines: 13

"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--