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U550

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ID = 16841
       
Country:
Germany
Brand: Radioröhren-Laboratorium-GmbH, Gerd Nickel, (Ultra); Berlin
Tube type:  Gas Triode   Audio Frequency 
Identical to U550

Filament Vf 1 Volts / If 0.55 Ampere
Literature Taschenbuch zum Röhren-Codex 1948/49   
 

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