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L497D

Information - Help 
ID = 1794
       
Country:
Germany
Brand: Valvo Radioröhrenfabrik GmbH; Hamburg
Tube type:  Vacuum Pentode   Power/Output 
Identical to L497D = F443N
Similar Tubes
Normally replaceable-slightly different:
  F443 ; L495D ; P460_Triotron
Other class quality (otherwise equal):
  4650
Predecessor Tubes L495D  
Successor Tubes 1947   EL34   EL60  

Base Europe 5-Pin (O5A, B5) (Codex=Foo)
Filament Vf 4 Volts / If 2 Ampere / Direct / Parallel, (AC/DC)
Tube prices 1 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
l497d_valvo.jpg
L497D: Sammlung
Anonymous 557 Collector

 
4_23.png
L497D: Telefunken Werkstattbuch
Wolfgang Bauer

 
l497d_tech.png
L497D: Valvo Röhrendatenblatt
Martin Steyer


Usage in Models 1= 1934 ; 1= 1936 ; 1= 1937

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):3

Collection of a member from D
Collection of a member from D

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