Summary
Triode, designed for telephone repeaters. Manufactured by Western Electric (USA). Introduced in 1927. This valve is a low noise version of the Western Electric 205D.
4.5 volt directly heated cathode.
Physical Description
Spherical bulb with top tip and 4 pin American UV style base. Sticker partially removed.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Donation from Mrs F. Jeffery, 07 Jun 1976
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Manufacturer
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Inscriptions
Bulb: WESTERN ELECTRIC R205-E MADE IN CANADA/PATENTED 1917 1920 1921 1922 1923 1928
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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
114 mm (Length), 60 mm (Outside Diameter)
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References
Radio News, March 44, Page 92
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Keywords