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U209D

Information - Help 
ID = 13106
       
Country:
Germany
Brand: Valvo GmbH, Radioröhrenfabrik; Hamburg
Tube type:  Space Charge Tetrode 
Identical to U209D
Similar Tubes
Normally replaceable-slightly different:
  D210_Triotron
First Source (s)
Jul.1928 : Funk Bastler 1928, Heft 34

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eu) Sidecontact.
Filament Vf 1.7 Volts / If 0.08 Ampere / Direct / Battery =
Information source Taschenbuch zum Röhren-Codex 1948/49   

u209d_sock.png U209D: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector


Just Qvigstad
u209d_spec.png
U209D: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

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