> On Jan 24, 2022, at 10:56 AM, Jon Elson via cctalk <cctalk@classiccmp.org> > wrote: > > Back in 1971 or so, we had a PDP-5 with DECTapes, and bought 3/4" analog > recorder tapes surplus to make up new tapes. It was much thinner than > DECTape, and we had print-through issues of tapes that were stored for a few > weeks. That seemed to clear up if the tapes were then used again. I guess > the permeability was not as high as real DECTapes. > Jon It may also be a case of wrong shape hysteresis loop. And standard tape isn't usually sandwich tape as DECtape is, so it would wear fast. paul
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