Antique radios, Old Time Radios
HK257
Country:
United States of America (USA)
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Identical to |
HK257
= CV824
= 8001
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Similar
Tubes |
Normally replaceable-slightly different:
4E27
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Base |
(Codex=My)
Top contact with a cap.
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Was used by |
Transmittertube (Radio) |
Filament |
Vf 5 Volts / If 7.5 Ampere / Direct |
Description |
125W, 75MHz. Jumbo 7 pin base. Heintz & Kaufman coding for 4E27.
Note: Sibley gives 5 pin base for 4E27 and equivalent tubes (?).
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Dimensions (WHD) incl. pins / tip |
x 149 x 68 mm / x 5.87 x 2.68 inch |
Information source |
Taschenbuch zum Röhren-Codex 1948/49
Tube Lore (I) p. 217
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HK257: Tabu Röhren-Codex, 1948
Anonymous 15 Collector
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