Antique radios, Old Time Radios
KY21
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Country:
United States of America (USA)
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| Identical to |
KY21
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Successor Tubes
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RX21
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| Base |
UY-Base, 5 Pins (USA, April 1927) (Codex=sp)
Top contact with a cap.
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| Was used by |
Transmittertube (Radio) |
| Filament |
Vf 2.5 Volts / If 10 Ampere / Direct |
| Description |
Va <3000 mean. Ia <0.5A mean. 3500V at 1.5A, for a total controlled power of 5KW were claimed. 11KV PIV, 3A peak.
Introduced in 1938 by Eimac; advertised in Electronics, March 1938; also built by Hyvac.
Text in other
languages (may
differ)
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Dimensions (WHD)
incl. pins / tip |
x 184 x 73 mm / x 7.24 x 2.87 inch |
| Information source |
Taschenbuch zum Röhren-Codex 1948/49
Babani, International Radio Tube Encyclopaedia
-- Original-techn. papers.
Tube Lore (I)
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KY21: Tabu Röhren-Codex, 1948
Anonymous 15 Collector
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Just Qvigstad
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