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Pen3520

Information - Help 
ID = 3604
       
Country:
Great Britain (UK)
Brand: Mazda = Valve (Tube) brand GB (see also France)
Tube type:  Vacuum Pentode   Power/Output 
Identical to Pen3520

Base British-7-Pin, old (M7A) (Codex=Ndo)
Was used by Radio/TV-reception etc.
Filament Vf 35 Volts / If 0.2 Ampere / Indirect / Series, AC/DC
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
pen3520_111111.jpeg
Pen3520: Photo of tube from my collection - TS
Tomasz Szczesniak

 
161_12.png
Pen3520: Telefunken Werkstattbuch
Wolfgang Bauer

 
pen3520.png
Pen3520: own collection
Peter den Boer


Usage in Models 1= 1934? ; 3= 1934 ; 1= 1935? ; 12= 1935 ; 3= 1936 ; 1= 1938

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):21



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