Antique radios, Old Time Radios
RT643
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Country:
France
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| Identical to |
RT643
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| Similar
Tubes |
Heater different:
R43
Other base:
RT643_7pin
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| First year |
1927
Saga of the Vacuum Tube, Tyne pp 404-406
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| Base |
French Bigrille 5 pin (D)
2 Sidecontacts.
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 0.6 Volts / If 1.5 Ampere / Direct / Specified voltage AC/DC |
| Description |
The brand is RT-Dario. This is an early AC tube, dated 1927.
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| Information source |
- - Manufacturers Literature not dated
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RT643: own collection
Peter den Boer † 2025
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