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4DL4

Information - Help 
ID = 21712
       
 
   
Tube type:  Triode, vacuum   UHF 
Identical to 4DL4 = PC88

Base Noval, 9 pin miniature (USA pico-9) B9A
Filament Vf 3.8 Volts / If 0.3 Ampere / Indirect / Specified current AC/DC ~ = (Series working)
Information source Röhren-Taschen-Tabelle, (Franzis RTT)   
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d_siemens_4dl4.jpg
4DL4: O.F.
Otto Frosinn

 
no201_g_2.gif
4DL4: RTT Schwandt
Günther Stabe † 19.8.20

 

from Just Qvigstad


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