Antique radios, Old Time Radios
NB-3
Country:
United States of America (USA)
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Identical to |
NB-3
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Base |
Octal (Int.Octal, IO) K8A, USA 1935
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Filament |
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Description |
420mA, 1.8 to 3.2V. Used in 2V filament battery operated sets.
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Information source |
Ballast Tube Handbook, The
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Just Qvigstad
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NB-3: Raytheon Databook 1937
Emilio Ciardiello
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