Chuck Guzis wrote: Really great (7 track) drives; substantially over-engineered as compared to, say, a 65x drive. The 604 wasn't quite as fast as the look=alike 607, but nothing to sneeze at. If you've got 160A, 3000-series or 6000-series machine (and associated controller), it'd be a really great drive to have. --Chuck ____________________________________________________________ These were great tape drives. The 604 was 75ips versus 150ips for the 607. Both drives were 200/556/800 bpi 7 track units. The weight was a killer. But they were extremely reliable, easy to work on and easy to interface. Al has manuals on them (I know because I loaned them to him) and I have a lot spare parts if someone wanted to try to get them working. These would be a good choice for recovering old 7 track tapes. They used vacuum tensioning columns and vacuum capstans. So very little contact with the magnetic slurry side of the tape. Billy Pettit