Summary
Heptode or Pentagrid frequency changer designed for use in battery powered equipment. 2.0 volt directly heated cathode, manufactured by AWV Sydney, Australia.
Widely used in 'farm radios', mantel or console radios designed for operation from batteries in places without mains electricity.
Physical Description
Shouldered glass bulb on octal base with all pins present with top cap.
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 - Likely Donation, 1981
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Manufacturer
Australian Wireless Valve Co (AWV Co), Sydney, New South Wales, Australia, 1937-1952
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Inscriptions
Bulb: 1C7/G Base: Radiotron/MADE IN AUSTRALIA/(excise mark 1 over 4) Paper label on base: 1C7G
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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
113 mm (Length), 38 mm (Outside Diameter)
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Keywords