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ID = 47811
Great Britain (UK)
Brand: Common type Great Britain tube/semicond.
Developer: Western Electric Company Inc.; New York (NY) 
Tube type:  Transmitting Tetrode, air cooled 
  Ca. 1925 up to 1945 rare.
Identical to CV1365 = ATS70 = 4282BZ

Base L4 British large 4 pin (1922, LG4) Top contact with a cap.
Was used by Transmittertube (Radio)
Filament Vf 10 Volts / If 3 Ampere / Direct / Parallel, (AC/DC)

Special 4-pin low-loss base. 70W plate dissipation, 1000V max plate voltage.

Dimensions (WHD)
incl. pins / tip
61 x 175 x mm / 2.40 x 6.89 x inch
Information source -- Original-techn. papers.   
- - Manufacturers Literature   
CV1365: Manufacturer's Literature
Emilio Ciardiello

CV1365: Manufacturer's Literature
Emilio Ciardiello

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