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SM4

Information - Help 
ID = 13024
       
Country:
France
Brand: Grammont (Radiofotos, Fotos); Paris, Malakoff
Tube type:  Dual-Grid Tetrode   Frequency converter 
Identical to SM4

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Fa) Sidecontact.
Filament Vf 4 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC
Information source Taschenbuch zum Röhren-Codex 1948/49   


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