--- You wrote:
You can actually see the ridges form on VCR tapes that have been
run over & over using the same portion of the tape (got kids?).
This was also true with Data Cartridge tapes (3M) that we used in
tape drive systems & the software actually did it (called "tensioning")
automatically prior to major/full copying.
--- end of quote ---
The sad thing about this particular tape is that it's been played maybe twice
since it was filmed in 1992.  I did a little more investigation last night and
found that tapes recorded at about the same time and stored in the same box as
the culprit played fine.  The difference seems to be the brand of tape.  I can
specify which seem bad and which are ok if anyone would be interested.   I may
also contact the manufacturerof the compromized tape.   I suspect they know
about the problem.  After all, apparently it was Ampex that developed 'tape
baking' to rescue some of their products.

Winding the tape back and forth a few times had no effect on the mechanical
"whistle"  it makes in some sections as it is played.

I've backed up what I can off the bad tape.  Next I'm going to borrow a food
dehydrator and try warming it up to 120F for ten hours as the authorities
specify.   We'll see.

True, this is a bit off topic, but it is real to those of us saving computer
media for a number of years.  What is the shelf life of a CD.  And which CDs or
DVDs are most archival.  And how do we rescue compromized media.

This may not be a joke for those of you who use tape backup systems.  Many of
them use 8mm cassettes like the Hi8 tape I'm concerned with.

Rich

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