Summary
General purpose triode equivalent to UV201A. 5.0 volt directly heated cathode.
Physical Description
Conical glass bulb with American style 4 short pin (UV) Bakelite base mounted on display block with a sectioned example of a similar valve (ST 021606).
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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Manufactured For
S. S. Kresge & Co., United States of America, circa 1925
'OK' was a house brand of S. S. Kresge & Co. (K Mart in the U.S.A.) -
Inscriptions
Paper label on bulb: OK/1-A/TUBE Display block: Brief description
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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
103 mm (Length), 44 mm (Outside Diameter)
Not including display block.
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References
[Book] Tyne, Gerald F. 1987. Saga of the Vacuum Tube., 1987, 359 Pages
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Keywords
