Antique radios, Old Time Radios
7J7E
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| Tube type: |
Triode-Hexode Frequency converter |
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| Identical to |
7J7E
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| First Source
(s) |
12.Jul.1939 : Electron Tube Registration List rec. 202
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| Predecessor Tubes |
6J8G
6K8GT
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Successor Tubes
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7J7
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| Base |
Loctal-8, B8G (Sylvania, 1938)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 6.3 Volts / If 0.3 Ampere / Indirect / Specified voltage AND current AC/DC |
| Description |
Actually this code just identifies the early production of 7J7 by Philco. First registered in 1939 as triode-hexode, was re-registered to Sylvania Hygrade in June 1942, with the addition of a suppressor grid internally connected to cathode.
See also 7J7.
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Just Qvigstad
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7J7E: Manufacturer's Literature
Emilio Ciardiello
More ...
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):6
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