Antique radios, Old Time Radios

1679

Country:	United States of America (USA)	Brand:	RCA (RCA Victor Co. Inc.); New York (NY)
		Developer:	RCA (RCA Victor Co. Inc.); New York (NY)
		Tube type:	Double Triode

Tube ID = 25481


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Identical to	1679
Similar Tubes	Other class quality (otherwise equal): 6J6
First Source (s)	1949 : Tube Lore, Sibley, USA 1996
Production stop	1952
Successor Tubes	1684

Was used by	Technology / Measurement
Filament	Vf 6.3 Volts / If: 0.6 Ampere / -: Indirect / -: Parallel, (AC/DC) /
Description	Min. Duotriode, 6J6 selected for improved cutoff and high zero-bias plate current, sold only to IBM for computer use. Tubes failing the selection became regular 6J6. Intro. 1949; superseded 1952 by type 1684. Bulbs were to be etched „6J6,“ not „1679“ and branded with „IBM“ and their part nos. 6J3000 and 300703. [Information by L. Sibley]

Telefunken Werkstattbuch
Wolfgang Bauer

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1679

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