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L490D

Information - Help 
ID = 11321
       
Country:
Germany
Brand: Valvo Radioröhrenfabrik GmbH; 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 (O5A, B5) (Codex=Foo)
Filament Vf 4 Volts / If 1.1 Ampere / Direct / Parallel, (AC/DC)
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
l490d_so.png
L490D: rtt
Michael Schlör

 
l490d_daten_kennl.png
L490D: Valvo Daten Heft 1930
Trev Levick


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