Antique radios, Old Time Radios
NB-4
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Country:
United States of America (USA)
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| Identical to |
NB-4
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| Base |
Octal (Int.Octal, IO) K8A, USA 1935
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| Filament |
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| Description |
480mA, 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-4: Raytheon Databook 1937
Emilio Ciardiello
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on a radio model page. You will find thousands
of tubes or valves with interesting links. You
even can look up radio models with a certain tube
line up.
[rmxtube-en]
| Data Compliance |
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