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MR4

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ID = 14525
       
Country:
Hungary
Brand: Tungsram; Budapest (see also British T.)
Tube type:  Triode, vacuum   Power/Output 
Identical to MR4

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.1 Ampere / Direct / Parallel, (AC/DC)
Information source Taschenbuch zum Röhren-Codex 1948/49   
 
h_tungsram_mr4_front.jpg
MR4: Original Egyesült Izzólámpa és Villamossági Rt. katalógus (Tungsram) 1928.
Sandor Selyem-Tóth

 
1925_12tungsrammr4_mr41.png
MR4: Typenkarten Audionröhren Dez. 1925
Thomas Lebeth


Usage in Models 1= 1926

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1

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