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G490

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ID = 2030
       
Country:
Germany
Brand: Valvo GmbH, Radioröhrenfabrik; Hamburg
Tube type:  Full-Wave Vacuum Rectifier   Power-supply 
Identical to G490 = VG240 = 506 = RGN1054
Similar Tubes
Normally replaceable-slightly different:
  1823 ; R0437
First year 1929 Tube leaflet collection E.Erb Analysis by original leaflets
Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Filament Vf 4 Volts / If 1 Ampere / Direct
Information source Taschenbuch zum Röhren-Codex 1948/49   
17_9.png G490: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad 		g490_spec.png
G490: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector
More ...
Usage in Models 4= 1929 ; 1= 1930 ; 2= 1931 ; 2= 1932 ; 1= 1934? ; 1= 1934 ; 1= 1935? ; 4= 1935 ; 1= 1936?? ; 1= 1936? ; 1= 1937
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):19

Collection of

Christian Schaufelberger (CH)
Christian ADAM (F)
Alberto Ammendola (I)
Georges Werts (B)
 
g490_a.jpg

G490
 
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