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Ultra-Micro

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ID = 14935
       
Country:
Czechoslovakia
Brand: Mars (tubes), Radioelektra; Praha
Tube type:  Triode, vacuum 
Identical to Ultra-Micro = Ultra-Mikro
First Source (s)
15.Mar.1927 : Funk Bastler #13

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 3.5 Volts / If 0.4 Ampere / Direct / Battery =
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   Katalog 1926

b4_base_pins~~808.png Ultra-Micro: Fin Stewart
Fin Stewart


Just Qvigstad
marsultramikro_kennli1.png
Ultra-Micro: Funk-Bastler 1927, Heft 14
Hartmut Völler

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