Summary
This valve combined detector, first audio stage and output valve in the one envelope. It was intended for use in portable radios. It was popular with manufacturers because it saved a valve and the space it occupied.
1.4 volt directly heated cathode. Used as class A audio amplifier and class A power output amplifier.
Physical Description
Tubular bulb with octal base and top cap.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Donation from Arthur J. Veall Pty Ltd, 15 Feb 1943
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Manufacturer
Hygrade - Sylvania Corporation., United States of America, 1939-1945
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Inscriptions
Bulb: 1D8GT Base: Hygrade/MADE IN USA
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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
80 mm (Length), 32 mm (Outside Diameter)
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Keywords
