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ID = 3935
Brand: Tungsram; Budapest (see also British T.)
Tube type:  Double Triode   Power/Output 
Identical to CB220
Similar Tubes
Other base:
Other base and data slightly different:

Base Europe 7-Pin C7A (Hx C, C7, C) 1933 (Codex=Ls)
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.25 Ampere / Direct / Battery =

2W output in class B.

Tube prices 1 Tube prices (visible for members only)
Information source History of the British Radio Valve to 1940   p. 151
Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature

145_2.png CB220: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad
CB220: Tungsram prospekt in Juli. 1934.
Sándor Selyem-Tóth

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Usage in Models 1= 1934 ; 1= 1935 ; 1= 1938? ; 1= 1941 ; 1= 1943?

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):5

Collection of



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