I am pretty sure, though that this drive is not QIC11
(I did wonder about
coverting it to that format once many years ago as I needed a QIC11 drive
for the PERQ).
--
Archive developed the movable head serpentine recording techinique that
begat QIC11 (and the 9 and 15 track formats) MANY years after 3M developed
FWiW, the Penny and Giles drive I mentioned doesn't have a moveable head
(it's got 4 separate windings, for the 4 tracks, in one fixed head). And
it deosn't appear to use serpentine recording -- it implies it rewinds
the tape at the end of each track. I have no idea how much of this is
related to ECMA 46...
-tony