Antique radios, Old Time Radios
RX21
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Country:
United States of America (USA)
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| Identical to |
RX21
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| Predecessor Tubes |
KY21
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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 |
Transmittertube (Radio) |
| Filament |
Vf 2.5 Volts / If 10 Ampere / Direct |
| Description |
Mercury rectifier, gridless KY21. 11KV PIV, 3A average.
Eimac and Hytron known manufacturers.
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Dimensions (WHD)
incl. pins / tip |
x 184 x 73 mm / x 7.24 x 2.87 inch |
| Information source |
Tube Lore (II) p. 209
-- Original-techn. papers. Electronics, March 1938
Tube Lore (I)
Taschenbuch zum Röhren-Codex 1948/49
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RX21: From my schematic collection.
Pier Antonio Aluffi
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Just Qvigstad
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