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Pen220A

Information - Help 
ID = 11470
       
Country:
Great Britain (UK)
Brand: Mazda = Valve (Tube) brand GB (see also France)
Developer: Mazda = Valve (Tube) brand GB (see also France) 
Tube type:  Vacuum Pentode   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to Pen220A = VT51
Similar Tubes
Normally replaceable-slightly different:
  CV1051
Successor Tubes CV1051  

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 =
Dimensions (WHD)
incl. pins / tip
45 x 112 x mm / 1.77 x 4.41 x inch
Information source Taschenbuch zum Röhren-Codex 1948/49   
Babani, International Radio Tube Encyclopaedia   Pages 126 & 127
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
- - Manufacturers Literature
 
pen220a_1.jpg
Pen220A: Frank Cuffe
Frank Cuffe

 
pen220a_sock.png
Pen220A: Tabu Röhren-Codex, 1948
Anonymous 15 Collector

 
pen220_220a_1~~1.png
Pen220A: own collection
Peter den Boer


from Just Qvigstad

Usage in Models 1= 1933

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1


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