Antique radios, Old Time Radios
DL9_deForest
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Country:
United States of America (USA)
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Brand:
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DeForest-Tubes |
| Tube type: |
Triode, vacuum Text |
| |
Ca. 1925 up to 1945 rare. |
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| Identical to |
DL9_deForest
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| Similar
Tubes |
Normally replaceable-slightly different:
TB04/10
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| First year |
1927
??
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 |
Transmittertube (Radio) |
| Filament |
Vf 7.5 Volts / If 1.6 Ampere / Direct / Battery = |
| Description |
2 watt transmitting tube with plate voltage 500. Fitted with "Isolantite" base (a type of ceramic). The tube had a spherical bulb shape. First made 1927 and discontinued 1928 with the introduction of the RCA UX210 tube.
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Dimensions (WHD)
incl. pins / tip |
59 x 107 x mm / 2.32 x 4.21 x inch |
| Information source |
- - Manufacturers Literature
-- Collector info (Sammler)
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DL9_deForest: Fin Stewart
Fin Stewart
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Just Qvigstad
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