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42A_Marconi

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ID = 85308
       
Country:
Italy
Brand: Marconi Italiana (Marconifono), Officine / Ufficio Marconi; Genova, Roma
Developer: Marconi Italiana (Marconifono), Officine / Ufficio Marconi; Genova, Roma 
Tube type:  Transmitting Triode, air cooled   Power/Output 
  Ca. 1925 up to 1945 very rare. ***
Identical to 42A_Marconi
Similar Tubes
Differences not known by us:
  43B
Base SPECIAL TUBEBASE in general 2 Top contacts.
Was used by Radio/TV-reception etc.
Filament Direct
Description

Very rare small low power transmiting tube with two filament pins only, on a B4 base. Anode and grid from top caps. Same design as 43B

 
Information source -- Collector info (Sammler)   
 
italian_marconi_42a.jpg

 
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