Antique radios, Old Time Radios
DL2_deForest
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Country:
United States of America (USA)
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| Identical to |
DL2_deForest
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| Similar
Tubes |
Normally replaceable-slightly different:
C509A
Other base and data slightly different:
DV2
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| First year |
1926
??
Saga of the Vacuum Tube, Tyne Seite 301
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| First Source
(s) |
Aug.1930 : Philips Bulletin R1164, p. 32
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| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 5 Volts / If 0.25 Ampere / Direct / Battery = |
| Description |
Plate voltage 150. First made in 1926 with a black bakelite base. This was changed to "Isolantite" (a type of ceramic) in 1927. Production discontinued 1928.
Text in other
languages (may
differ)
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Dimensions (WHD)
incl. pins / tip |
x 107 x 34 mm / x 4.21 x 1.34 inch |
| Tube prices |
5 Tube prices (visible for members
only)
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| Information source |
Saga of the Vacuum Tube, Tyne Page 301
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DL2_deForest: O.F.
Otto Frosinn
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Just Qvigstad
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Collection of
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Variants
Ceramic based
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