Summary
Heptode (pentagrid) frequency changer (converter) designed for use in battery powered radios. Introduced in 1940 for military applications and for domestic radios after the war, it remained in use until the introduction of transistors around 1956.
1.4 V directly heated cathode.
"Radiotron" was the brand used by Amalgamated Wireless Valve Company (AWV), a subsidiary of AWA.
Manufacturer: AWV, Sydney, Australia
Physical Description
Tubular bulb with 7 pin glass base with exhaust tip on top.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Donation from J. C. Liddy, 21 Sep 1950
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Manufacturer
Australian Wireless Valve Co (AWV Co), Sydney, New South Wales, Australia, 1940-1956
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Inscriptions
Bulb: 1R5/AWV/Radiotron/Made in Australia/(illegible) Base: 1(over)4
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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
54 mm (Length), 18 mm (Outside Diameter)
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Keywords