Antique radios, Old Time Radios
1684
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Country:
United States of America (USA)
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| Identical to |
1684
= 2033
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| Similar
Tubes |
Differences not known by us:
6J6
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| First Source
(s) |
1951 : Tube Lore (I)
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| Production stop |
1964 |
| Predecessor Tubes |
1679
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Successor Tubes
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6211
5844
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| Filament |
Vf 6.3 Volts / If 0.3 Ampere / Indirect / Specified voltage AND current AC/DC |
| Description |
Min. Medium- µ duotriode, 1679 w/ heater current cut to 300 mA and improved plate-current characteristics; repl. 1679. Sold only to IBM and branded w/ "IBM" and part no. 304994. Intro. 1951; withdrawn 1964. Superceded by 6211, which had separate cathode leads. [Information by L. Sibley]
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1684: Telefunken Werkstattbuch
Wolfgang Bauer
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Collection of
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