Antique radios, Old Time Radios
25Z4GT
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Country:
United States of America (USA)
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| Identical to |
25Z4GT
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| Similar
Tubes |
Other shape (e.g. bulb type):
25Z4
; 25Z4G
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| First Source
(s) |
06.Jun.1939 : Electron Tube Registration List
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| Base |
Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Ui)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 25 Volts / If 0.3 Ampere / Indirect / Specified current AC/DC ~ = (Series working) |
| Information source |
Taschenbuch zum Röhren-Codex 1948/49
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25Z4GT: ARRL Handbook 1972
Anonymous 10 Collector
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Just Qvigstad
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25Z4GT: https://frank.pocnet.net/sheets/201/2/25Z4GT.pdf
Tim Küpper
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