Antique radios, Old Time Radios
504
| Base |
Pin-and-blade jumbo (3 contacts)
Top contact with a cap.
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| Was used by |
Transmittertube (Radio) |
| Filament |
Vf 11 Volts / If 14.75 Ampere / Direct / Specified voltage AC/DC |
| Description |
Heavy duty 250 watt oscillator or power amplifier. Same as 504A but filament amps considerably higher. (504A - 3.85, 504 - 14.75)
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| Information source |
Radio Engineering
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504: Fin Stewart
Fin Stewart
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Just Qvigstad
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