Antique radios, Old Time Radios
278A
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Country:
United States of America (USA)
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| Identical to |
278A
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| Similar
Tubes |
Normally replaceable-slightly different:
4278A
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| Filament |
Vf 10 Volts / If 16 Ampere / Direct |
| Description |
Tetrode variant of 251A. Thoriated tungsten filament. 1KW plate dissipation; 30MHz operation. Three pin base.
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| Information source |
Tube Lore (I)
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line up.
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