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YD4

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ID = 16624
       
Country:
Austria
Brand: Triotron (tubes) = Brand of Schrack, Austria
Tube type:  Triode, vacuum   Power/Output 
Identical to YD4
Similar Tubes
Normally replaceable-slightly different:
  B409 ; E4_Kremenezky

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.15 Ampere / Direct / Specified voltage AC/DC
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   1931 tube data booklet

1_133.png YD4: Telefunken Werkstattbuch
Wolfgang Bauer


Just Qvigstad
yd4_daten_kennlinie.png
YD4: Triotron Radio Röhrenbroschüre 1928
Thomas Lebeth

Usage in Models 1= 1927??

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

Collection of

 
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