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220OT

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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   
History of the British Radio Valve to 1940   p.186
180_1.png 220OT: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad 		220ot_characteristics.png
220OT: My schematic collection.
Pier Antonio Aluffi
Usage in Models 1= 1937? ; 1= 1937 ; 2= 1938? ; 6= 1938 ; 4= 1939 ; 2= 1940 ; 2= 1947 ; 1= 1948??
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):19

Collection of

Robert Gillespie (USA)
John Koster (NL)
Gwyn Griffiths (GB)
 
220ot.jpg

220OT
 
Forum contributions about this tube
220OT
Threads: 1 | Posts: 2
Hits: 706     Replies: 1
"Top connection" = ?? "Obenanschluss" = ??
Wilhelm Siepe
26.Oct.22 		  1
"Top connection" = ?? "Obenanschluss" = ?? 

I cannot see any top connection" as mentioned! = ??  /  Ich sehe keinen "Obenanschluss" wie verzeichnet = ??
Harald Giese
26.Oct.22 		  2
"Top connection" = ?? "Obenanschluss" = ?? 

Hallo Herr Siepe,

vielen Dank für Ihren Hinweis! Der Eintrag wurde korrigiert.

Mit freundlichen Grüßen,

Harald Giese
 
220OT
End of forum contributions about this tube
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