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W509

Information - Help 
ID = 10456
       
Country:
Netherlands
Brand: Marathon (tubes), Radio-Marathon, N.V. Rave; Amsterdam, Eindhoven
Tube type:  Vacuum Pentode   RF/IF-Stage 
  Ca. 1925 up to 1945 rare.
Identical to W509
Similar Tubes
Normally replaceable-slightly different:
  E446 ; HP4100 ; RENS1284

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Fco) Top contact screw type.
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1 Ampere / Indirect / Parallel, (AC/DC)
Dimensions (WHD)
incl. pins / tip
60 x 146 x 35 mm / 2.36 x 5.75 x 1.38 inch
Weight 61 g / 2.15 oz
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   1935
 
w509_1.jpg
W509
Peter den Boer

 
13_5~~3.png
W509: Telefunken Werkstattbuch
Wolfgang Bauer

 
w509data.png
W509: own collection
Peter den Boer


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