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ID = 2
Brand: Telefunken Deutschland (TFK), (Gesellschaft für drahtlose Telegraphie Telefunken mbH
Tube type:  Triode, vacuum   Universal 
Identical to RE78
First year 1924 Tube leaflet collection E.Erb Analysis by original leaflets

Base Telefunken base 4 pin (Codex=Byy)
Filament Vf 2.3 Volts / If 0.06 Ampere / Direct / Battery =
Description Thorium-Heizfaden 
Tube prices 9 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   
RE78: K.H.S
Karlheinz Schneider

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RE78: Rundfunkprakt.,Dt.Lit.Inst,Berlin 1926
Anonymous 15 Collector

RE78: Rundfunkprakt.,Dt.Lit.Inst,Berlin 1926
Anonymous 15 Collector

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from Just Qvigstad

Usage in Models 2= 1924? ; 8= 1924 ; 1= 1925? ; 7= 1925 ; 2= 1926

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):20

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