Summary
Output pentode, used as a class A power output amplifier. Manufacturer: The Ken-Rad Corporation, Owensboro, Kentucky, USA.
This was the first type of output pentode to be widely used in the United States. This type number was later abbreviated to 47.
2.5 V directly heated cathode.
Physical Description
Conical bulb with five pin UY style base.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Donation from I. E. Morton, 10 Mar 1972
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Manufacturer
The Ken-Rad Corporation, Owensboro, Kentucky, United States of America, circa 1932
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Inscriptions
Base: KEN-RAD/UY-247
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Brand Names
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Classification
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Category
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Discipline
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Type of item
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Overall Dimensions
136 mm (Length), 54 mm (Outside Diameter)
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References
[Book] Stokes, John. 1982. 70 Years of Radio Tubes and Valves., 56 - 57 Pages
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Keywords
