On 1/13/18 9:04 AM, Jon Elson via cctalk wrote:
I don't know what you are talking about with Mylar
on both sides. They were conventional magnetic tape, a clear mylar
film with oxide applied to one side.
the actual spec is here:
http://bitsavers.org/pdf/dec/dectape/3M_DECtape_Spec_Nov66.pdf