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F209

Information - Help 
ID = 19805
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Triode, vacuum   Universal 
  Ca. 1925 up to 1945 very rare. ***
Identical to F209 = 27 = UY227 = F209N
Similar Tubes
Normally replaceable-slightly different:
  F209A

Base UY-Base, 5 Pins (USA, April 1927)
Was used by Radio/TV-reception etc.
Filament Vf 2.5 Volts / If 1.75 Ampere / Indirect / Parallel, (AC/DC)
Information source - - Manufacturers Literature   R650Du 10-1-1929
 
f209miniwatt.jpg
F209: K.H.Fischer
Karlheinz Fischer

 
er227_so~~3.png
F209: ARRL Handbook 1972
Michael Schlör

 
f209data.png
F209: own collection
Peter den Boer


from Just Qvigstad


Forum contributions about this tube
F209
Threads: 1 | Posts: 2
Hits: 2093     Replies: 1
F209 (F209)
Peter Hughes
10.Oct.10
  1

 Surely this tube is an indirectly heated triode rather than a tetrode.

Peter

Jacob Roschy
11.Oct.10
  2

Hello Peter,

thanks for the hint, I've fixed that in between,

Regards, Jacob

 
F209
End of forum contributions about this tube

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