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ID = 20286
Brand: Common type Europe tube/semicond.
Tube type:  High-vacuum Rectifier 
Identical to 3BH2 = GY501

Base Magnoval (9-Pins), B9D Top contact with a cap.
Filament Vf 3.15 Volts / If 0.37 Ampere / Half indirect / Specified voltage AC/DC
Information source Röhren-Taschen-Tabelle, (Franzis RTT)   

gy501~~1.png 3BH2: Telefunken Röhrenhandbuch
Wolfgang Bauer

Just Qvigstad

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