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SD4

Information - Help 
ID = 13004
       
Country:
Austria
Brand: Triotron (tubes) = Brand of Schrack, Austria
Tube type:  Triode, vacuum   Detector 
Identical to SD4 = RE064

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Le)
Was used by Radio/TV-reception etc.
Filament Vf 3.5 Volts / If 0.06 Ampere / Direct / Battery =
Description

Codex falsch erfasst!

 
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   1931 tube data booklet
 
triotron_sd4.jpg
SD4: g.h.
Gerhard Heigl

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1_185.png
SD4: Telefunken Werkstattbuch
Wolfgang Bauer

 
sd4_daten_kennlinie.png
SD4: Triotron Radio Röhrenbroschüre 1928
Thomas Lebeth

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from Just Qvigstad

Usage in Models 1= 1928?? ; 1= 9999

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2


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