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D418

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ID = 2885
       
Country:
Hungary
Brand: Tungsram; Budapest (see also British T.)
Developer: Tungsram; Budapest (see also British T.) 
Tube type:  Signal Diode - one single system   Detector 
  Ca. 1925 up to 1945 very rare. ***
Identical to D418 = CV1686 = CV1687
Similar Tubes
Other characteristic (electr. data):
  VT118A_GPO ; VT118B_GPO
First year 1934 -- Original prospect or advert For quite some given models for 1934

Base Europe 3-Pin B3 (Eu H) (Codex=Ecc) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.18 Ampere / Indirect / Specified voltage AND current AC/DC
Information source Babani, International Radio Tube Encyclopaedia   Page 92 & 93
Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Section 69, p. 94
Taschenbuch zum Röhren-Codex 1948/49

hp4105d418app4120_1.gif
D418: Eigentum
Egon Strampe

d418_so.png D418: Röhren Codex 1948
Anonymous 10 Collector

More ...

Just Qvigstad
d418_spec.png
D418: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

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Usage in Models 5= 1934? ; 17= 1934 ; 1= 1935? ; 2= 1935 ; 1= 1938?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):26

Collection of

 
d418_a.jpg

D418
 

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