> On Jun 16, 2015, at 11:22 , Johnny Billquist <b...@update.uu.se> wrote: >> >> Pretty much the standard CDC vacuum-column design since the 1960s. The >> TU80 is, after all, a CDC product. Two counter-rotating capstans--tape >> movement is determined by applying positive or negative pressure to >> ether or both (i.e. positive pressure on both results in the tape >> "floating" > > Uh... The TU80/TU81 do not have vacuum columns...
Or rotating capstans... -- Mark J. Blair, NF6X <n...@nf6x.net> http://www.nf6x.net/
