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At 07:09 PM 2009-11-03, you wrote: >From: Patent Tactics, George Brock-Nannestad >....SNIP..... >The story continues. I would not be surprised to learn that northern Italian >records were cut with machines run off 14 Hz or 16 2/3 Hz, which were in use >for traction purposes. Let us see if a type-wri-toon will work here: ;-) - >yes, it did. Hi, George, One thing that intrigued me is that the Tonschreiber version of the Magnetophon which was analyzed in depth after WWII by some Army Engineers who appeared to do a good job apparently could work from 25-60 Hz. Cheers, Richard Richard L. Hess email: [log in to unmask] Aurora, Ontario, Canada (905) 713 6733 1-877-TAPE-FIX Detailed contact information: http://www.richardhess.com/tape/contact.htm Quality tape transfers -- even from hard-to-play tapes.