deforest: Friendly Service from De Forest

ID: 204727
deforest: Friendly Service from De Forest 
10.Nov.09 17:29
0

Wolfram Zylka (D)
Editor
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Wolfram Zylka

 

Friendly Service from De Forest
 
During my Holiday in Ireland, I was successful and got a set of De Forest coils.
The Label on those coils is very useful.
There is a Diagram were you can easily read what will be the wave length in relation
to the related Capacity between 0 and 1000 pF.
 
Nice also: What are the wild Waves saying
 
Best wishes
Wolfram Zylka

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 2
Igranic 
10.Nov.09 19:45

Konrad Birkner † 12.08.2014 (D)
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Konrad Birkner † 12.08.2014

Sorry, but I doubt deForest. such coils were made by Igranic.

The DeForest Honeycomb Coils with their typical pin/jack base are an invention made in 1919 by Robert F.Gowen, Chief Engineer at DeForest.

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