Summary
Tetrode type UX222, the first type of screen grid (tetrode) valve introduced by RCA in 1927. This valve is the Sylvania equivalent. Used as a Class A R. F. amplifier.
Manufacturer: Sylvania Products Co., Emporium, PA, USA.
3.3 V directly heated cathode.
Physical Description
Conical bulb with 4 pin UX style base with top cap. Mounted on display block with ST 18226.
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 1928
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Inscriptions
Base: Sylvania/SX-222
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Brand Names
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Classification
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Category
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Type of item
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Overall Dimensions
123 mm (Length), 44 mm (Outside Diameter)
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Keywords