[QuadList] VR-3000 History

[chill315 at aol.com]

There were update kits available that did things like compliance arms and other stuff.  Maybe we can get a history of the changes.

Chris Hill

On Aug 13, 2012, at 12:25 PM, "Don Norwood" <dwnorwood at embarqmail.com> wrote:

> 
> 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 
> 
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