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Re: A bipolar vacuum Tesla coil ??



Subject:  Re: A bipolar vacuum Tesla coil ??
  Date:  Thu, 12 Jun 1997 22:15:48 -0700
  From: "Norman F. Stanley" <nfs-at-midcoast-dot-com>
    To:  Tesla List <tesla-at-pupman-dot-com>


At 11:15 PM 6/11/97 -0500, you wrote:
        <snip>

>Hi young coilers,
>
>  I remember ...
>
>Exposition de Paris , 1937-  not my earliest recollection  : ' (
>Palais des lumières , Paris , France , Europe ; -)
>
>A bipolar vacuum Tesla coil ??
>Components
>
>HF generator : 250 kW radio broadcast .
>  Lenght of wave : 187 m ( 1,62 Mhz)
>  Vacuum tubes : 400 W oscillator  , 2 x 20 kW water cooled triodes , 
>
                    
>2 x 120 kW final triodes.
>      Plate voltage : 5000 V (/ Hg kenotron )
>      Heater : 30 V -at- 600 A ( / dynamo 1 )
>      Control grid  700 V     ( / dynamo 2 )
>
>2 x 1/4 wave magnifiers  ( 2 towers without terminal but 
>with a horizontal adjustable carbon electrode ) , standed near
>an ornemental lake ( for an optical effect and triodes cooling).
>
>Lightning sparks 7 m ( 23 ' )
>
>Amicalement votre ,
>
>Lyonel
>
>Dr Lyonel BAUM  ( MD ) , Macon , France , Europe.
>
>Ref : L.D. Fourcault.- La Science et la Vie , Dec 1937 ,n° 246, 438-439
>( 2 photos )

Seems like this is the sort of thing Hugo Gernsback would have picked up
and reported in his radio magazines.  He was always in close touch with
European developments.  I used to newsstand browse Radio-Craft back
then,
but don't recall ever seeing anything along that line.  Anyone else
recall
anything or have access to files of those old magazines?  

Norm