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W499

Information - Help 
ID = 15052
       
Country:
Netherlands
Brand: Longlife, the Hague
Tube type:  Triode, vacuum   Audio Frequency 
  Ca. 1925 up to 1945 rare.
Identical to W499
Similar Tubes
Normally replaceable-slightly different:
  E499
Production stop Feb.1938

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=F)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.9 Ampere / Indirect / Parallel, (AC/DC)
Description

The "Röhren-codex" lists this tube as a Thermion tube, but the brand is Longlife.

 
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   1-2-1935
 
w499_so.png
W499: rtt
Michael Schlör

 

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