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MR3D

Information - Help 
ID = 76928
       
Country:
Hungary
Brand: Tungsram; Budapest (see also British T.)
Tube type:  Triode, vacuum 
Identical to MR3D
Similar Tubes
Differences not known by us:
  MR3

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 3.5 Volts / Direct / Battery =
 
tungsram_mr3d_draw.png
MR3D: web
Sándor Perneky

 

Usage in Models 2= 1929

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2

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