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NR23

Information - Help 
ID = 12845
       
Country:
Great Britain (UK)
Brand: Common type Great Britain tube/semicond.
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to NR23 = CV1159 = 7412
Predecessor Tubes S410   PM14  

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Er) Top contact screw type.
Filament Vf 3.6 Volts / If 0.09 Ampere / Direct / Battery =
Information source Taschenbuch zum Röhren-Codex 1948/49   

pm14_1.png NR23: Manufacturer's Literature
Emilio Ciardiello


Just Qvigstad

Collection of

 
marconi_nr23_bild1.jpg

NR23
 

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