Antique radios, Old Time Radios

BK1

Country:	Germany	Brand:	Telefunken Deutschland (TFK)
		Developer:	Philips; - Eindhoven; Netherlands
		Tube type:	OCTODE Frequency converter Controlling (mu)
			Late but no serial production. For instance only development samples. *****

Tube ID = 25263


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Identical to	BK1
Similar Tubes	Heater different: AK1
First Series	Mar.1934 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)	Feb.1934 : -- Original-techn. papers.
Successor Tubes	1934 CK1

Base	Europe 7-Pin (C7A, C, 1933) Top contact with a cap
Was used by	Radio/TV-reception etc.
Filament	Vf 15 Volts / If: 0.18 Ampere / -: Indirect / -: Series, DC /
Description	Diese Röhre war bei Telefunken nur geplant. Ob Prototypen exististieren, ist nicht bekannt. Quelle: Internes Material von Telefunken, Berlin 1934. Text in other languages (may differ)

RTT 1974 (Franzis) 13. Auflage
Martin Renz

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BK1

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