Summary
Electronic valve used for detecting radio waves, circa1920; probably an Audiotron manufactured by Cunningham, U. S. A. One of the first electronic valves imported into Australia from America in 1920.
In view of the fact that the label has fallen off this valve and that Audiotron valves were marketed by AWA as "Expanse" valves in Australia, the valve could well be an "Expanse" as it was acquired from AWA.
Physical Description
Paper identifying label appears to have fallen off.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Donation from Amalgamated Wireless (Australasia) Ltd, 03 Feb 1941
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Inventor
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Manufacturer
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Inscriptions
Paper sticker: I & T Museum Melbourne 21479
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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
150 mm (Length), 24 mm (Outside Diameter)
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References
[Book] Tyne, Gerald F. 1987. Saga of the Vacuum Tube., 1987, 160 - 164 Pages
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Keywords
