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<DIV>This machine illustrates one of the major design differences between RCA
and Ampex. Because all of the Ampex subsystems were basically
self-contained, all of their machines in the VR-1000/1100/1200/2000 series could
be upgraded with interchangeable parts. Of course that ended with the
AVR-1, but up until then, any frame could be upgraded as desired, and that
wasn't possible between models with RCA. You couldn't turn a TRT-1 into
the equivalent of a TR-70. Now which design approach was better is a
matter for much debate..............</DIV>
<DIV> </DIV>
<DIV>Don Norwood<BR>Digitrak Communications, Inc.<BR><A
href="http://www.digitrakcom.com">www.digitrakcom.com</A></DIV></BODY></HTML>