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Pen220

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ID = 11469
       
Country:
Great Britain (UK)
Brand: Mazda = Valve (Tube) brand GB (see also France)
Tube type:  Vacuum Pentode   Power/Output 
Identical to Pen220 = 220Pen
Similar Tubes
Other base:
  Pen220_4pin
Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Foo)
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.2 Ampere / Direct / Battery =
Description

Anode and screen voltages = 150v. gm 2.2 mA/V RL optimum load is 14,000 Ohms Power output 0.6W

 
Information source History of the British Radio Valve to 1940   p. 148 & 186
- - Manufacturers Literature   1937
Babani, International Radio Tube Encyclopaedia
Taschenbuch zum Röhren-Codex 1948/49
606_4.png Pen220: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad 		pen220_220a_1.png
Pen220: own collection
Peter den Boer
More ...
Usage in Models 1= 1931 ; 2= 1932? ; 4= 1932 ; 2= 1933 ; 2= 1934 ; 2= 1935 ; 3= 1936 ; 2= 1937
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):18

Collection of

Robert Gillespie (USA)
Roy Johnson (GB)
Yaroslav Voronov (GB)
 
pen220.jpg

Pen220
 
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