Summary
Tetrode, used as class A power output amplifier. Manufactured by Western Electric, USA. This valve was designed for use in carrier telephone equipment. Data suggests that it was used connected as a triode. Similar to type 46.
5.0 volt directly heated cathode.
Physical Description
Five-pin 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
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Inscriptions
Base: Western Electric/USA/281A Nothing on bulb
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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
161 mm (Length), 65 mm (Outside Diameter)
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References
[Book] Babani, Bernard B. 1958. International Radio Tube Encyclopaedia., 1958, 30, 31 Pages
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Keywords