Summary
Triode, used as an output amplifier in radios, manufactured for: Radio Corporation of America, introduced in 1925-26.
This valve was intended for use in the output stage of radios. Its power consumption was rather high for use in battery powered radios but could be used when a mains powered high tension source was available. In late 1926 it was replaced by the UX 171A with an oxide coated cathode requiring half the filament power.
Technical details: 5.0 volt directly heated cathode. Filament was thoriated tungsten, maximum anode voltage was 180 volts, delivering 0.7 watt output.
Physical Description
Four pin American UX style base.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Donation from Mr Finlayson (Fin) Stewart, 14 Jun 1973
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Manufactured For
Radio Corporation of America, United States of America, 1926
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Inscriptions
Paper label on bulb: "USE IN LAST AUDIO STAGE ONLY" On base: RADIOTRON UX 171
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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
111 mm (Length), 44 mm (Outside Diameter)
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References
[Book] Tyne, Gerald F. 1987. Saga of the Vacuum Tube., 1987, 315 - 317 Pages
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Keywords