Antique radios, Old Time Radios
31BX7
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| Identical to |
31BX7
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| Similar
Tubes |
Normally replaceable-slightly different:
6BX7
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| Base |
Octal (Int.Octal, IO) K8A, USA 1935
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| Filament |
Vf 6.3 Volts / Indirect |
| Information source |
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31BX7: rttt
Anonymous 10 Collector
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Just Qvigstad
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