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L490D

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ID = 11321
       
Country:
Germany
Brand: Valvo GmbH, Radioröhrenfabrik; Hamburg
Tube type:  Vacuum Pentode   Power/Output 
Identical to L490D
First year 1929 Tube leaflet collection E.Erb Analysis by original leaflets

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Foo)
Filament Vf 4 Volts / If 1.1 Ampere / Direct / Specified voltage AC/DC
Information source Taschenbuch zum Röhren-Codex 1948/49   

l490d_so.png L490D: rtt
Anonymous 10 Collector


Just Qvigstad
l490d_daten_kennl.png
L490D: Valvo Daten Heft 1930
Trev Levick

 

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