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A4DD2

Information - Help 
ID = 22644
       
Country:
Spain
Brand: Castilla; Madrid
Tube type:  Double Diode 
Identical to A4DD2 = AB2

Filament
Information source - - -   de Darkness, Radio Válvulas, 1952
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A4DD2: Telefunken Werkstattbuch
Wolfgang Bauer

 

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