Tom Fine wrote:
Dave Lennick brings up OTR collections. Most of what I've been paid to transfer are quarter-track
(ie 4 separate programs), 3.75IPS, usually dubbed from an equally bad tape sources, dubbed a few
generations back from scratched transcriptions or off-air with a weak signal. And they're usually
recorded on scrap Signal Corps tape, typically old Audiotape or Ampex 641 type, usually 1 mil. It's
amazing anything audible is there but voice recordings can have surprisingly limited frequency range
and be full of dropouts and still be audible if not enjoyable.
Don't forget all the crosstalk. Most of the OTR tapes I've had have been Shamrock 1800' or
equivalent..Ampex 641 is the GOOD stuff! Incidentally, that surplus 641 that was sold by a guy in
Alexandria VA 20 years ago was decent stuff, and well-erased (if it was even used at all).
dl
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