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4-07

Information - Help 
ID = 78990
       
Country:
Hungary
Brand: Orion; Budapest
Developer: Kremenezky, Johann (Sator); Wien,(Röhrenhersteller) 
Tube type:  Triode, vacuum   Universal 
Identical to 4-07

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.09 Ampere / Direct / Battery =
Description

Listed as being for RF, oscillator and detector use.

 
Information source - - Manufacturers Literature   

b4_base_pins~~793.png 4-07: Fin Stewart
Fin Stewart


Just Qvigstad

Collection of

 
407_tungsram~~1.jpg

4-07
 

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