[cctalk] tape duplicator program for pdp11

Hi, Just got a real (Cipher M990 on TS05-emulating controller) tape drive running and would like to make exact copies of some [9-track] tapes "to guard against disaster." Probably will also do some imaging, so bonus if the candidate program can handle that too. This is on an 11/34; I don't have a good q-bus tape controller yet or I'd try it on uVAX with NetBSD or something less "exciting" :) Anyone know of good programs to do this with only one tape drive? Don't care which operating system. Been looking through DECUS archives but have found nothing yet (manually reading thru - 1/3 of the way done, maybe there's a better way to scan these?). thx jake