Antique radios, Old Time Radios
840
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Country:
United States of America (USA)
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| Identical to |
840
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| Base |
UY-Base, 5 Pins (USA, April 1927) (Codex=Hr)
Top contact with a cap.
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 2 Volts / If 0.14 Ampere / Direct / Battery = |
| Description |
This tube was introduced by RCA for use in the RCA Victor beat-frequency audio oscillator. It was not listed for distributor sales and was withdrawn in 1945.
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Dimensions (WHD)
incl. pins / tip |
x 116 x 38 mm / x 4.57 x 1.50 inch |
| Weight |
39 g / 1.38 oz |
| Information source |
Tube Lore (II) p. 78
-- Collector info (Sammler)
Babani, International Radio Tube Encyclopaedia
Taschenbuch zum Röhren-Codex 1948/49
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840: ARRL Handbook 1972
Anonymous 10 Collector
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Just Qvigstad
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