Antique radios, Old Time Radios
520B
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Country:
United States of America (USA)
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| Identical to |
520B
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| Similar
Tubes |
Differences not known by us:
820B
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| Was used by |
Transmittertube (Radio) |
| Filament |
Vf 22 Volts / If 34 Ampere / Direct |
| Description |
5000 watt Oscillator, RF amplifier and modulator, water cooled.
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| Information source |
Taschenbuch zum Röhren-Codex 1948/49 August 1930, page 17
Radio Engineering
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| Data Compliance |
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