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MR51

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ID = 12815
       
Country:
Hungary
Brand: Tungsram; Budapest (see also British T.)
Tube type:  Space Charge Tetrode   Audio Frequency 
Identical to MR51
First Source (s)
Apr.1927 : Funk Bastler #14

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eu) Sidecontact.
Was used by Radio/TV-reception etc.
Filament Vf 3.2 Volts / If 0.06 Ampere / Direct / Battery =
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   Undated data sheet

sockel_raumladungsr.gif MR51: RTT
Wolfgang Holtmann


Just Qvigstad
1925_12tungsrammr5_mr51_1.png
MR51: Typenkarten Audionröhren Dez. 1925
Thomas Lebeth

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Usage in Models 1= 1925??

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

Collection of

 
tungsram_mr51_bild1.jpg

MR51
 

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