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R681

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ID = 25350
       
Country:
France
Brand: Dario (tubes) - voir aussi La Radiotechnique
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
Identical to R681

Filament Vf 0.6 Volts / If 1.2 Ampere / Direct / Specified voltage AC/DC

 
f_rt_lampes1929~~2.jpg

 

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