-----Oorspronkelijk bericht----- Van: Paul Koning via cctalk <[email protected]> Verzonden: zondag 2 november 2025 20:44 Aan: [email protected] CC: Paul Koning <[email protected]> Onderwerp: [cctalk] Re: How hard would it be to make new dec tape media?
> On Nov 2, 2025, at 10:46 AM, Jon Elson via cctalk <[email protected]> > wrote: > > On 11/1/25 20:49, ben via cctalk wrote: >> How hard would it be to make new dec tape media? >> 60 year tape could use a replacement. >> Ben. >> > DecTape is laminated, ie. it has Mylar on both sides of the oxide. 50 years > ago, we made working replacements from 3/4" instrumentation tape, but it was > NOT laminated. It had a print-through issue where if left sitting for a few > months, it would start getting errors. I have no idea if there is anywhere > you can buy 3/4" instrumentation tape. Maybe you can get 3/4" video tape. Bitsavers has the 3M spec for 480 and 481 sandwich tape, I'm not sure which of these two is what DEC used. It seems crazy, but it can't hurt to ask 3M if they still make that stuff. paul Getting the tape is one, but who can record the preformatted blocks on the "virgin" tape? Henk, PA8PDP
