Summary
Valve # 1: Radiotron, Dual Diode Triode, Type 6B6G, circa 1938
Valve # 2: RCA, Diode Triode, Type 1H5G, circa 1940
Valve # 3: Radiotron, Dual Diode Triode, Type 6B6G, circa 1950
The diode sections in all three valves were used for the signal detector and automatic volume control (AVC) rectifier and the triode section was used for the first audio stage in radio receivers. All three valves are octal versions of earlier type 75, and have a 6.3 volt indirectly heated cathode.
Physical Description
Valve # 1: Shouldered glass bulb with top cap and octal base with 7 pins present. Mounted on display block with a sectioned example of the same type. Valve # 2: Tubular glass bulb with top cap and octal base with 7 pins present. Mounted on display block. Valve # 3: Shouldered glass bulb with top cap and octal base with 7 pins present. Contained in cardboard carton, probably the original one.
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, 19 Jan 1948
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Manufacturer
Australian Wireless Valve Co (AWV Co), Sydney, New South Wales, Australia, circa 1938
Valve # 1 -
Manufacturer
Radiotron (RCA), Australia, 1940
Valve # 2 -
Manufacturer
Australian Wireless Valve Co (AWV Co), Sydney, New South Wales, Australia, circa 1950
Valve # 3 -
Inscriptions
Bulb: 6B6/G Base: Radiotron (indistinct) Display block: Description and name of donor Bulb: 6B6/G Base: K5 AWA (in circle)/MADE IN AUSTRALIA/ (1 over 4 excise mark) Display block: Description and name of donor Bulb: 6B6/G Base (Printed): Radiotron AWV (wing logo) (1 over 4 Excise stamp) L9/6B6-G/MADE IN/AUSTRALIA Paper label on base: 6B6/G All 4 sides of carton: Radiotron/THE WORLDS STANDARD Two sides of carton: Manufactured &/Guaranteed by/AMALGAMATED WIRELESS/VALVE COMPANY/PTY. LTD. SYDNEY/AUSTRALIA Other two sides of carton: WARRANTY/(AWV winged shield logo)/THIS VALVE IS/CERTIFIED TO BE/SPECIALLY TESTED/By/Radiotron/LABORATORY Top flap of carton: A.W.V. 6B6-G (twice)/Licence notice/WARNING - SEE THAT/STAPLE HAS NOT BEEN/TAMPERED WITH Bottom end of carton: Torn, but part of the word: RADIOTRON is visible. Paper label on one side of carton: 6B6/G
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Brand Names
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Classification
Electronics, Vacuum technology, Amplification & rectification
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Category
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Discipline
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Type of item
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Other Dimensions
110 mm (Length), 38 mm (Outside Diameter)
Display block not included. Measurment for value #1.
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Other Dimensions
100 mm (Length), 39 mm (Outside Diameter)
Display block not included. Measurment for value #2.
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Keywords