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G409

Information - Help 
ID = 2512
       
Country:
Hungary
Brand: Tungsram; Budapest (see also British T.)
Tube type:  Triode, vacuum   Audio Frequency 
Identical to G409
Similar Tubes
Normally replaceable-slightly different:
  RE084
First Source (s)
21.Jun.1929 : Radio-Expres, Netherlands

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Filament Vf 4 Volts / If 0.08 Ampere / Direct / Battery =
Description gm=2.4, Ra=7k 
Information source Radio-Expres, Netherlands   
Taschenbuch zum Röhren-Codex 1948/49   
 
hu_tungsram_g409_front.png
G409: H.G.
Harald Giese

 
g409_sock.png
G409: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

 
g409_spec.png
G409: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector


from Just Qvigstad

Usage in Models 4= 1929 ; 1= 1930 ; 1= 1931

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):6


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