Antique radios, Old Time Radios
91
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Country:
United States of America (USA)
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| Identical to |
91
= FG37
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| Similar
Tubes |
Heater different:
1904_RCA
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| First Source
(s) |
1931 : - - Manufacturers Literature via Burnap
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| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX)
Top contact with a cap.
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 110 Volts / If 2 Ampere / Indirect |
| Description |
This tube was developed by GE in 1931 (Electronics, Oct. 1931, pp. 152-154). It had very limited production and was discontinued in 1952 by RCA.. Designed for DC to AC inverters mainly so consumers could in DC power supply areas could use large radios and phonographs.
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Dimensions (WHD)
incl. pins / tip |
x 203 x 58 mm / x 7.99 x 2.28 inch |
| Information source |
Tube Lore (II) page 29
Tube Lore (I) Page 11
-- Collector info (Sammler)
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91: Fin Stewart
Fin Stewart
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Just Qvigstad
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Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1
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