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MD4

Information - Help 
ID = 12802
       
Country:
Austria
Brand: Triotron (tubes) = Brand of Schrack, Austria
Tube type:  Screen-grid Tetrode 
Identical to MD4

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Fa)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1 Ampere / Direct / Battery =
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   1931 tube data booklet

2_2.png MD4: Telefunken Werkstattbuch
Wolfgang Bauer


Just Qvigstad
 

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