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402OT

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ID = 12443
       
Country:
Great Britain (UK)
Brand: Cossor, A.C.; London
Tube type:  Beam Power Tube   Power/Output 
Identical to 402OT
First Source (s)
1938 : History of the British Radio Valve to 1940 p.191
Base British-7-Pin, old (M7A) (Codex=Na)
Was used by Radio/TV-reception etc.
Filament Vf 40 Volts / If 0.2 Ampere / Indirect / Specified voltage AC/DC
Information source Taschenbuch zum Röhren-Codex 1948/49   
536.png 402OT: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad 		402_ot_characteristics.png
402OT: My schematic collection.
Pier Antonio Aluffi
Usage in Models 1= 1937 ; 5= 1938
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):6

Collection of

Armand Verboven (B)
 
402ot.jpg

 
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