Summary
Expanse B Triode. Made by Amalgamated Wireless in Australia.
This was the type of valve produced by A. W. A. over the period 1921-1923.
Physical Description
Tubular bulb with ebonite caps at each end and exhaust tip on the side.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Unknown Acquisition Method from Unknown Source
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Manufacturer
Amalgamated Wireless (Australasia) Ltd., Australia, circa 1922
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Inscriptions
On plate inside bulb: EXPANSE/6534(serial number)
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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
88 mm (Length), 25 mm (Outside Diameter)
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References
[Book] Tyne, Gerald F. 1987. Saga of the Vacuum Tube., 1987, 273-275 Pages
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Keywords