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F109

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ID = 25620
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Triode, vacuum   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to F109 = F109G
Similar Tubes
Normally replaceable-slightly different:
  26

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Was used by Radio/TV-reception etc.
Filament Vf 1.5 Volts / If 1.25 Ampere / Direct / Specified voltage AND current AC/DC
Description

HF amplification.

 
Information source - - Manufacturers Literature   R650DU 10-1-1929

171_11~~1.png F109: Telefunken Werkstattbuch
Wolfgang Bauer


Just Qvigstad
f109data.png
F109: own collection
Peter den Boer

Collection of

 
f109_1.jpeg

 

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