Antique radios, Old Time Radios
DR_deForest
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Country:
United States of America (USA)
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Brand:
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DeForest-Tubes |
| Tube type: |
Half-Wave Vacuum Rectifier Power-supply |
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| Identical to |
DR_deForest
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| Similar
Tubes |
Normally replaceable-slightly different:
1562
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| First year |
1927
??
Saga of the Vacuum Tube, Tyne Seite 301
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| First Source
(s) |
1927 : Saga of the Vacuum Tube, Tyne p.301-304
Aug.1930 : Philips Bulletin R1164, p. 33
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| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX)
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| Filament |
Vf 7.5 Volts / If 1.25 Ampere / Direct / Specified voltage AC/DC |
| Description |
Tube fitted with "Isolantite"ase (a type of ceramic) First made 1927
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| Information source |
Saga of the Vacuum Tube, Tyne p.301-304
-- Collector info (Sammler)
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DR_deForest: Fin Stewart
Fin Stewart
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Just Qvigstad
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