Summary
Tetrode type 235. The internal workings are sectioned to display the variable pitch winding of the control grid. The variable pitch winding of the grid produces the remote cut-off or variable mu characteristic.
2.5 volt indirectly heated cathode.
Manufacturer: Cable Radio Tube Corp., 230 North Ninth Street, Brooklyn, NY, USA.
Physical Description
Valve without bulb on five pin UY style base with top cap, mounted on display block with ST 21579. The internal workings are sectioned to display the variable pitch winding of the control grid.
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
Cable Radio Tube Corp., Brooklyn, New York, New York State, United States of America, circa 1932
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Inscriptions
Base; SPEED/TYPE235
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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 (Height), 35 mm (Outside Diameter)
Dimensions of valve, excluding display block.
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Keywords