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ATP75

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ID = 11964
       
Country:
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Developer: Marconi-Osram - (Valves/Tubes); GB 
Tube type:  Transmitting Tube, Pentode, air cooled   Power/Output 
  Ca. 1925 up to 1945 rare.
Identical to ATP75 = NT38 = CV1371 = VT144_GPO
Similar Tubes
Normally replaceable-slightly different:
  PZ1-75 ; SW75Pen

Base SPECIAL TUBEBASE in general (Codex=Bz) Top contact with a cap.
Was used by Transmittertube (Radio)
Filament Vf 10 Volts / If 2 Ampere / Direct / Specified voltage AC/DC
Description

4 pin base similar to US 50 watt transmitting tube base. 75 watts dissipation.

 
Information source Taschenbuch zum Röhren-Codex 1948/49   
Babani, International Radio Tube Encyclopaedia   Pages 234-235
 
pt6_2.png
ATP75: Manufacturer's Literature
Emilio Ciardiello

 
cv1371atp75vt144_1_1.png
ATP75: Manufacturer's Literature
Emilio Ciardiello

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