FF33 German field telephone pre 1939 circuit
By Dag S Karlsen, ; posted October 24, 2016; hits 2120
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| This circuit was used in German field telephones 1933-1939. |
By Dag S Karlsen, ; posted October 24, 2016; hits 2120
|
| This circuit was used in German field telephones 1933-1939. |