Calibration tapes have nothing to do with track count. MRLs are recorded as single track (full width) of what ever the tape stock is, in this case 2".

I know they were as rare as hen's teeth. It's not really much of a stretch track wise though because 16-track on 1-inch was easy enough, and even 16 on half-inch. As head design got better tracks could be moved closer with no worse crosstalk than older heads of greater track width. Tascam was a leader in head design to make that all possible.


