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L491D

Information - Help 
ID = 11322
       
Country:
Germany
Brand: Valvo Radioröhrenfabrik GmbH; Hamburg
Tube type:  Vacuum Pentode   Power/Output 
Identical to L491D = E443N
Similar Tubes
Heater different:
  RES664d
First year 1930 Tube leaflet collection E.Erb Analysis by original leaflets

Base Europe 5-Pin (O5A, B5) (Codex=Foo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1 Ampere / Direct / Parallel, (AC/DC)
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
l491d_valvo.jpg
L491D: own tube collection
Hannu Alho

 
4_20.png
L491D: Telefunken Werkstattbuch
Wolfgang Bauer

 
l491d_tech.png
L491D: Valvo Röhrendatenblatt
Martin Steyer


Usage in Models 1= 1934

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1


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