Summary
A tetrode (screen grid valve) designed for use as a radio frequency amplifier in battery powered radios.
2 volt directly heated cathode.
The date code on the base (E 4) indicates that this valve was manufactured in November 1932.
Manufactured by: RCA Radiotron Company, Harrison, NJ, USA.
Physical Description
Conical bulb on 4 pin UX base with top cap.
More Information
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Collecting Areas
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Manufacturer
RCA Radiotron Co., Inc., Harrison, New Jersey, United States of America, 1932
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Inscriptions
Bulb: 32 Base: e/RCA/4/Radiotron
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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
124 mm (Length), 45 mm (Outside Diameter)