Mystery system

Jon Elson elson at
Thu Feb 4 22:25:54 CST 2016

On 02/04/2016 08:57 PM, William Donzelli wrote:
> Some models of 3420s were 7 track.
Yes, I suppose there was a need in some installations to 
handle old, archival tapes.  But, I certainly never saw 
one.  Most sites got rid of their 7-tk stuff as soon as they 


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