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ID = 19232
Brand: Niggl Hochvakuum-Röhren GmbH, München.
Tube type:  TRIODE (Detail uncertain) 
Identical to NA406

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Filament Vf 3.5 Volts / If 0.06 Ampere / Direct / Battery =
Description Audion, Hoch- und Niederfrequenz; Durchgriff: 14%; Steilheit: 0,5 mA/V; Innenwiderstand: 18 kOhm 
NA406: Eigenes Bild
Anonymous 971 Collector


from Just Qvigstad

Collection of a member from D

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