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ID = 13958
Great Britain (UK)
Brand: Common type Great Britain tube/semicond.
Tube type:  Triode, vacuum 
Identical to CV1152 = 7404A = NR15A
Similar Tubes
Normally replaceable-slightly different:
  410LF ; PM4DX
Predecessor Tubes CV1151  

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Filament Vf 3.8 Volts / If 0.1 Ampere / Direct
Description Improved NR15/CV1151 with anode impedance reduced from 20 to 6 kohms and anode current raised from 1.6 to 4.5 mA. 
Information source Taschenbuch zum Röhren-Codex 1948/49   
-- Original-techn. papers.   

pm3_2.png CV1152: Manufacturer's Literature
Emilio Ciardiello

Just Qvigstad
CV1152: Manufacturer's Literature
Emilio Ciardiello

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