we have a  A   and  a B   
the  A  we need  has the domed  top.
that is the earliest one.....
here is  some  readings  off our  site..
 
 
 
http://www.smecc.org/the_200-a_hewlett-packard's_first_product.htm
 
 
 
In a message dated 11/17/2017 1:11:18 P.M. US Mountain Standard Time,  
[log in to unmask] writes:

If  anyone were to ever get their hands on one of these, they would be very 
lucky.  It was HP’s first commercial product…  

Fantasia StarDisney  studios wanted an audio oscillator that could go down 
to 20 Hz for recording  and testing for their Fantasound sound system for 
the animated movie Fantasia  which pioneered multi-channel theater sound. 
Hewlett and Packard modified  their oscillator to handle the lower frequency, 
hence the model HP-200B.  Disney ordered eight of the 200B oscillators as part 
of the requirements for  recording Fantasia.

Fantasound was Disney's name for a sound system  contracted with RCA that 
recorded eight different music tracks resulting in  the first true stereo 
"surround sound" with full separation in motion  pictures. Fantasound was not 
only a unique recording system but required an  expensive eight discrete 
channel sound system for theater playback. The  Fantasia premiere took place in 
New York in 1940 to enthusiastic reviews  especially for the sound. Fantasia 
music conductor Leopold Stokowski received  a special Oscar for "widening 
the scope of the motion picture as entertainment  and as an art form".

Larry Kaufman
Engineering & Support 
620  East Smith Rd.
Enterprise center ‘D’ 
Medina, OH  44139

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On 11/17/17, 2:16 PM, "HP-3000  Systems Discussion on behalf of Bob J." <H
[log in to unmask] on behalf  of [log in to unmask]> wrote:

Maybe Tesla built the 200  but Bill & Dave took credit for it like Edison 
took  credit for Tesla's work.

;)

Bob J. -- Ideal Computer Services


Ed Sharpe wrote:

> 
>I saw a segment Mysteries at the  Museum showing  Tesla...   why  is there 
a 
>HP 200 ( 200 A, B or C) SERIES  AUDIO OSCILATOR  .   behind him?
> 
>I think threw is also  a Heathkit power supply  on another self as  well...
> 
> 
>Ed#
>
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