[QuadList] Ampex AST heads and CMC DPT heads--what's different?

[Ted Langdell]

Yes... AST was an Ampex trademark, and DPT "Dynamic Parallell  
Tracking" was apparently a TM of CMC.

I'm just curious to know what's different... and the story behind it.

Ted

On May 7, 2010, at 7:58 PM, Don Norwood wrote:

> Hi Ted:
>
> I have some of the CMC heads, and I thought it was just a different  
> trade name.  Wasn't AST registered to Ampex?
>
> Don
> ----- Original Message -----
> From: Ted Langdell
>
> Side question: Can anyone tell what CMC Technology's "D.P.T.  
> (Dynamic Parallel Tracking)" heads for Ampex machines differed from  
> Ampex's AST (Automatic Scan Tracking) heads for 1" Type C?
>
> Ted
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Ted Langdell
Secretary

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