Summary
Remote cut-off tetrode. Used in early mains powered radios in the period around 1930. 2.5 V indirectly heated cathode.
Physical Description
Conical glass bulb with top cap and 5 pin American style (UY) base.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Donation from Mr S. A. Pick, 03 Mar 1941
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Manufacturer
Bond Electric Corporation, United States of America, Circa 1930
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Inscriptions
On base (hot stamped): BOND (logo)/435/MADE IN U.S.A.
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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
125 mm (Length), 46 mm (Outside Diameter)
Not including display block
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Keywords
House Cleaning Equipment, Thermionic Electron Valves, Vacuum Equipment