Antique radios, Old Time Radios
KR31
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Country:
United States of America (USA)
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| Identical to |
KR31
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| Base |
UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=B)
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| Was used by |
Radio/TV-reception etc. |
| Filament |
Vf 10 Volts / If 0.5 Ampere / Indirect |
| Description |
While Stokes (p.116) mentiones the KR31 together with KR1 and KR98 as mercury vapor rectifiers, other literature says high vacuum.
Sibley lists Ken-Rad KR31 as single diode mercury rectifier.
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Dimensions (WHD)
incl. pins / tip |
x 103 x 38 mm / x 4.06 x 1.50 inch |
| Weight |
34 g / 1.20 oz |
| Information source |
Tube Lore (II) p. 33
Babani, International Radio Tube Encyclopaedia Page 280
Tube Lore (I)
Taschenbuch zum Röhren-Codex 1948/49
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KR31: Tabu Röhren-Codex, 1948
Anonymous 15 Collector
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Just Qvigstad
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