[TUHS] unix v4 tape found

[steve jenkin via TUHS]

Links for those playing along at home on “What could possibly go wrong…”

CHM (and Al? ) as professional archivists / recovery will be more than aware of all this.

> On 7 Nov 2025, at 10:14, Al Kossow via TUHS <tuhs at tuhs.org> wrote:
> 
> early 80's Memorex, on the other hand (like Sun and UCB liked to use)

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Sticky-shed (hygroscopic binder)
	<https://en.wikipedia.org/wiki/Sticky-shed_syndrome>

Affected Tape

	Tapes affected by sticky-shed are those that were made by Ampex/Quantegy 
		such as 406/407, 456/457, 499, 
	and consumer/audiophile grade back coated tapes 
		such as Grand Master and 20-20+,[citation needed] 
	as well as those made by Scotch/3M 
		including professional tapes such as 206/207, 226/227, 262 (though not all 262 is backcoated and therefore isn't affected), 808, and 986 
	as well as audiophile tapes such as "Classic" and "Master-XS”.

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Magnetic Tape Binder Breakdown
	a.k.a. Polyurethane Binder Deterioration (Sticky Shed Syndrome / Soft Binder Syndrome)
	<https://psap.library.illinois.edu/collection-id-guide/softbindersyn>

	Test for Sticky Shed Syndrome BEFORE attempting playback.

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Council on Library and Information Resources

2. What Can Go Wrong with Magnetic Media?
	<https://www.clir.org/pubs/reports/pub54/2what_wrong/>

	2.5 Magnetic Tape Recorders
		This document is primarily concerned with tape media, not tape recorders. 
		However, in discussing what can go wrong with media, recorders must be mentioned. 

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--
Steve Jenkin, IT Systems and Design 
0412 786 915 (+61 412 786 915)
PO Box 38, Kippax ACT 2615, AUSTRALIA

mailto:sjenkin at canb.auug.org.au http://members.tip.net.au/~sjenkin