At 10:50 PM 3/16/99 -0000, you wrote:
      They're
made for the old 3M DC-1000 tapes, DEC tapes work great. 
No, I've tried DECtapes.  It takes a lot of force to get them into the
slot, and they don't seem to work.  :-)
For the uninitiated, DECtapes are six-inch reels of 3/4 inch (?) tape.
I think Joe is saying that the 85 needs the same cartridge tapes as the DEC
TU58 "DECtape II" drive, as commonly found on the PDP-11/44, VAX-11/750, and
other early-80s DEC machines.  Despite the moniker, there is almost 
 nothing in
 common between DECtape and DECtape II. 
  You may be right about the DEC stuff but the tapes that I have (about 20
of them) only say DECtape and they definitely fit the 9815, 9825, 9915, 85,
etc.
   Joe