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DET21

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ID = 29815
       
Country:
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Tube type:  Transmitting Triode, air cooled   Power/Output 
Identical to DET21

Base Jumbo 4-pin bayonet (1918) Top contact with a cap.
Was used by Transmittertube (Radio)
Filament Vf 10 Volts / If 5.5 Ampere / Direct / Specified voltage AC/DC
Dimensions (WHD)
incl. pins / tip
x 230 x 65 mm / x 9.06 x 2.56 inch
Information source Universal Vade-Mecum, Electron Valves and Semiconductor Devices   group 373. p. 848 & 849
Babani, International Radio Tube Encyclopaedia   p. 198 & 199

jumbo_4_pin_transmitting_base~~3.png DET21: Fin Stewart
Fin Stewart


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