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L497D

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

Base Europe 5-Pin (O5A, B5) (Codex=Foo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If: 2 Ampere / -: Direct / -: Parallel, (AC/DC) /
Literature Taschenbuch zum Röhren-Codex 1948/49   

l497d_valvo.jpg
Sammlung
Ingo Moll

 
4_23.png
Telefunken Werkstattbuch
Wolfgang Bauer

 
l497d_tech.png
Valvo Röhrendatenblatt
Martin Steyer

Usage in Models (calculation each 25th of the month)   1= 1936 ; 1= 1937 ;
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):   2
No further Information for

L497D    

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