Antique radios, Old Time Radios
ST21_Tekade
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| Tube type: |
Triode, vacuum |
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<1925 very rare. *** |
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| Identical to |
ST21_Tekade
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| Filament |
Vf 9 Volts / If 1.8 Ampere / Direct |
| Information source |
- - Manufacturers Literature june 1924
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ST21_Tekade: own collection
Peter den Boer † 2025
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