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DQ77

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ID = 29835
       
Country:
Great Britain (UK)
Brand: Marconi's Wireless Telegraph Co. Ltd.
Tube type:  Double Diode   Detector 
Identical to DQ77

Base Miniatur-7-Pin-Base B7G, USA 1940
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect
Information source Universal Vade-Mecum, Electron Valves and Semiconductor Devices   group 77
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