Antique radios, Old Time Radios
538-B
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Country:
United States of America (USA)
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| Identical to |
538-B
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| Similar
Tubes |
Other class quality (otherwise equal):
12AT7
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| Base |
Noval, 9 pin miniature (USA pico-9) B9A
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| Was used by |
Technology / Measurement |
| Filament |
Vf 12.6 Volts / If 0.15 Ampere / Indirect |
| Description |
This tube mae by RCA for Boonton. It is a special quality tube for the Boonton 232A and 232B signal generators
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| Information source |
Tube Lore (II) p. 71 & 150
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538-B: Fin Stewart
Fin Stewart
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Just Qvigstad
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