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4L15

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ID = 15232
       
Country:
Germany
Brand: TeKaDe (TKD), Süddeutsche Telefon-Apparate- Kabel- und Drahtwerke; Nürnberg
Tube type:  Triode, vacuum   Power/Output 
Identical to 4L15
Similar Tubes
Normally replaceable-slightly different:
  B409
First year 1928 Tube leaflet collection E.Erb Analysis by original leaflets

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Filament Vf 4 Volts / If 0.15 Ampere / Direct / Specified voltage AC/DC
Tube prices 1 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   

4l15_sock.png 4L15: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector


Just Qvigstad
4l15_spec.png
4L15: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

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d_tekade_4l15a.jpg

 

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