Antique radios, Old Time Radios
Spiralventil
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Country:
Germany
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| Identical to |
Spiralventil
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| Similar
Tubes |
Differences not known by us:
x-ray-rectifier
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| First Source
(s) |
1909 : -- Collector info (Sammler)
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| Base |
Other combinations of connections.
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| Was used by |
Technology / Measurement |
| Filament |
--/-- |
| Description |
X-ray rectifier tube.
Triple valve tube with spiral aluminum cathode for high electrical charge and short exposure time.
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