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EW120

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ID = 18170
       
Country:
Europe
Brand: Common type Europe tube/semicond.
Tube type:  Current Regulator, Iron in Hydrogen 
Identical to EW120
Similar Tubes
Normally replaceable-slightly different:
  WE44_Rectron
Multiple differences or of other kind:
  329
First year 1928 -- Collector info (Sammler) by model types
Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=E)
Filament
Information source Taschenbuch zum Röhren-Codex 1948/49   
183a_1.png EW120: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad
Usage in Models 4= 1927 ; 1= 1928? ; 2= 1928 ; 6= 1929? ; 1= 1929
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):14
 
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