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402Pen

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ID = 10815
       
Country:
Great Britain (UK)
Brand: Cossor, A.C.; London
Tube type:  Vacuum Pentode   Power/Output 
Identical to 402Pen
First Source (s)
1936 : History of the British Radio Valve to 1940 p.189
Base British-7-Pin, old (M7A) (Codex=Nfo) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 40 Volts / If 0.2 Ampere / Indirect / Specified current AC/DC ~ = (Series working)
Information source Taschenbuch zum Röhren-Codex 1948/49   p.189
162.png 402Pen: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad 		402pen_characteristics.png
402Pen: My schematic collection.
Pier Antonio Aluffi
Usage in Models 1= 1936? ; 1= 1937 ; 1= 1938
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3
 
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