Antique radios, Old Time Radios
WR21
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Country:
United States of America (USA)
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| Identical to |
WR21
= WR21A
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| Similar
Tubes |
Other characteristic (electr. data):
WR21D
Differences not known by us:
WR11
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| First year |
Feb.1922
Radio Manufacturers of the 1920's, Vol. 3 page 9
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| First Source
(s) |
1920 : Antique Radio Classified L.A.Peckham, 1991
1922 : Saga of the Vacuum Tube, Tyne page 310+312
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| Production stop |
Sep.1922 |
| Base |
Europe 4-Pin B4 (Eu A, E, 4A) 1914
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 4 Volts / If 0.8 Ampere / Direct / Battery = |
| Description |
Aeriotron WR21. Initially for the Westinghouse DR (1921), later for the Aeriola Grand receiver of July 1922. The only known Radiola Grand can be seen in the Ford Museum (Douglas). The manufacturing of this tube was discontinued already in September 1922. Needs a ballast tube WB800. Two versions existed: The WR21A (for Amplifier) clear glass tip, and the WR21D (for Detector) with green lacquer tip.
This tube is fitted with a base made by the Shaw Insulator Company and was surplus stock acquired when the Westinghouse company bought the Moorhead inventory in 1920
Text in other
languages (may
differ)
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| Tube prices |
6 Tube prices (visible for members
only)
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| Information source |
-- Collector info (Sammler)
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WR21: 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
Collection of
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