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B509

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ID = 85383
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: RCA (RCA Victor Co. Inc.); New York (NY) 
Tube type:  Triode, vacuum   Audio Frequency 
Identical to B509
Similar Tubes
Other base:
  CX301A ; UX201A

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 5 Volts / If 0.25 Ampere / Direct
Description

This tube probably also made with the American UX base, because of its equivalent.

 
Information source L'ABCDaire des lampes de TSF des jeunes années   p. 11

b4_base_pins~~844.png B509: Fin Stewart
Fin Stewart


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