[QuadList] VR-3000 History

[Don Norwood]

I've been restoring another VR-3000, and this one is diffeent from any of 
the others that I've done in the past.  From component date codes, it 
appears to have been made in early '76.  The unusual aspect of this machine 
is that it includes many of the features of a VR-3000B.  It does not have 
the additional audio circuitry of the "B", but it does have dual speed 
operation and the connector for the external TBC-900.  All of this, 
including the TBC interface card, appears to be original factory assembly.

I'm hoping Bill Carpenter or others can detail the evolution of the 3000.  I 
didn't realize that the external processing was available prior to the "B". 
The VR-3000B manual I have is dated '77, so I assume this machine may have 
been made just prior to the B's introduction.

Always good to learn more about the history of these amazing machines!

Don Norwood
Digitrak Communications, Inc.
www.digitrakcom.com