Summary
SY227 triode equivalent to the RCA UY-227. The '227 was the first widely manufactured indirectly heated triode, used in many of the first AC mains operated radios made in the USA and Australia. Later renamed type 27. 2.5V indirectly heated cathode.
Manufacturer: Sylvania Products Company. Emporium, PA, USA.
Physical Description
Conical bulb on 5 pin UY style base.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Purchase
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Manufacturer
Sylvania Products Co., Emporium, Pennsylvania, United States of America, circa 1929
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Inscriptions
Bulb: (sticker)MADE IN U.S.A. Base: Sylvania/SY-227
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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
113 mm (Length), 45 mm (Outside Diameter)
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Keywords