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4045A

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ID = 18447
       
Country:
Great Britain (UK)
Brand: Standard Telephones and Cables Ltd. (STC); London, Foots Cray
Developer: Standard Telephones and Cables Ltd. (STC); London, Foots Cray 
Tube type:  Screen-grid Tetrode   Audio Frequency 
  Ca. 1925 up to 1945 very rare. ***
Identical to 4045A = VT145_GPO = CV243

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928
Was used by Telephony
Filament Vf 5 Volts / If 1.6 Ampere / Direct / Specified voltage AND current AC/DC
Information source Taschenbuch zum Röhren-Codex 1948/49   
-- Original-techn. papers.   
- - Manufacturers Literature
Universal Vade-Mecum, Electron Valves and Semiconductor Devices
 
stc_cv243_4045_e920.jpg
4045A: Ebay item September 2020
Fin Stewart

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4045A: STC Catalog 1947
Oskar Elm

 
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4045A: STC Catalog 1947
Oskar Elm

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