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L21DD

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ID = 31764
       
Country:
Great Britain (UK)
Brand: Mazda = Valve (Tube) brand GB (see also France)
Tube type:  LOCKED OFF PART (CODE 9) - see in Notes 
Identical to L21DD

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928
Description

See L21/DD

 
Information source Taschenbuch zum Röhren-Codex 1948/49   

l21dd_pinout.png L21DD: From my schematic collection.
Pier Antonio Aluffi


Just Qvigstad
l21dd_characteristics.png
L21DD: My schematic collection.
Pier Antonio Aluffi

 

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