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ID = 47279
Tube type:  Vacuum Pentode   RF/IF-Stage 
Identical to CV1777 = 7C7 = VT-193

Base Loctal-8, B8G (Sylvania, 1938)
Filament Vf 6.3 Volts / If 0.16 Ampere / Indirect / Specified voltage AC/DC
Information source -- Original-techn. papers.   
CV1777: Manufacturer's Literature
Emilio Ciardiello


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