Antique radios, Old Time Radios
DS1_Thermion
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Country:
Netherlands
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| Identical to |
DS1_Thermion
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| Similar
Tubes |
Normally replaceable-slightly different:
B442
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| Production stop |
Feb.1938 |
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Successor Tubes
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2-442
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| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
Top contact screw type.
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| Filament |
Vf 4 Volts / If 0.085 Ampere / Direct / Battery = |
| Information source |
- - Manufacturers Literature 1931
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DS1_Thermion: rtt
Anonymous 10 Collector
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Just Qvigstad
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DS1_Thermion: own collection
Peter den Boer † 2025
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