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220OT

Information - Help 
ID = 12426
       
Country:
Great Britain (UK)
Brand: Cossor, A.C.; London
Tube type:  Screen-grid Tetrode   Power/Output 
Identical to 220OT

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Fo)
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.2 Ampere / Direct / Battery =
Information source Taschenbuch zum Röhren-Codex 1948/49   
 
220ot.jpg
220OT: own collection
John Koster

 
180_1.png
220OT: Telefunken Werkstattbuch
Wolfgang Bauer

 

Usage in Models 1= 1937? ; 1= 1937 ; 1= 1938? ; 4= 1938 ; 4= 1939 ; 2= 1940 ; 2= 1947 ; 1= 1948??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):16


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