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