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Pen3520

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ID = 3604
       
Country:
Great Britain (UK)
Brand: Mazda = Valve (Tube) brand GB (see also France)
Developer: 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 / Specified current AC/DC ~ = (Series working)
Information source History of the British Radio Valve to 1940   p. 148 & 190
Babani, International Radio Tube Encyclopaedia   p. 126 & 127
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
Taschenbuch zum Röhren-Codex 1948/49

161_12.png Pen3520: Telefunken Werkstattbuch
Wolfgang Bauer


Just Qvigstad
pen3520.png
Pen3520: own collection
Peter den Boer

Usage in Models 1= 1934? ; 4= 1934 ; 1= 1935? ; 16= 1935 ; 3= 1936 ; 1= 1938

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):26


Collection of

 
pen3520_111111.jpeg

Pen3520
 

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