Antique radios, Old Time Radios
D_Marconi
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Country:
United States of America (USA)
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| Identical to |
D_Marconi
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| First year |
1915
??
Saga of the Vacuum Tube, Tyne Seite 115
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| Base |
Edison (candelabra) 12 mm
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| Was used by |
Military and/or Government |
| Filament |
Direct / Specified current DC = (Series working) |
| Description |
Spherical valve made by American Marconi late in 1915. Identical in appearance to de Forest double wing Audion. Anode and grid connections from "flying leads"
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Dimensions (WHD)
incl. pins / tip |
x x 54 mm / x x 2.13 inch |
| Information source |
Saga of the Vacuum Tube, Tyne Page125
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D_Marconi: Page 125 Tyne's "Saga of the Vacuum Tube"
Fin Stewart
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Collection of
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