Summary
Octode frequency changer for use in battery powered radios. Manufactured by: Mullard, England.
It has a 1.4 volt directly heated cathode.
Mullard appear to have been the only manufacturer to fit side contact bases to valves with 1.4 volt filaments.
Physical Description
Tubular glass bulb with top cap. Bulb has gold metallic coating. 8 pin side contact base with 7 pins present.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Donation from Mr David Turner, 11 Jan 1972
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Manufacturer
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Inscriptions
Bulb: BVA(logo)/PROTECTED/BY PATENTS/Mullard/DK1
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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
95 mm (Length), 30 mm (Outside Diameter)
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Keywords