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6R4

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ID = 19383
       
 
   
Tube type:  Triode, vacuum   UHF 
Identical to 6R4 = EC81
First Source (s)
15.Jul.1949 : Electron Tube Registration List 766

Base Noval, 9 pin miniature (USA pico-9) B9A
Filament Vf 6.3 Volts / If 0.175 Ampere / Indirect / Parallel, (AC/DC)
Description UHF triode intended as oscillator up to 750MHz.
RMA registation code for Philips EC81. 
Text in other languages (may differ)
Tube prices 1 Tube prices (visible for members only)
  6r4.png
  6R4: Internet
Miguel Angel Trujillo-Rodriguez
 
nl_philips_6r4.jpg
6R4: Eigene Sammlung
Siegfried Neumann

 
no2_g.gif
6R4: RTT Schwandt
Günther Stabe † 19.8.20

 

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