I bought this giant GCR tape drive on eBay five years ago,
http://www.bitsavers.org/pdf/fujitsu/_brochures/M244X_Brochure_1984.pdf
hoping to be able to use it to extract analog signals from 6250 BPI
tapes to feed into my decoding program.
https://github.com/LenShustek/readtape
I failed to figure out how to get the right signals out, and
eventually abandoned the project. I now need the space it takes, so
I'm offering it for free before consigning it to the landfill. It's
big (20" x 24" x 30" on the wheeled stand I built) and heavy (160
lbs) so I won't ship it. Pickup only, on the San Francisco peninsula.