Summary
Directly heated triode designed for high frequency amplification and detection with 6 Volt filament; manufactured by Cossor, Great Britain. When this valve was first made, it was not given a type number; this came later.
Physical Description
Conical glass bulb with 4 pin European style base mounted on display block with sectioned valve (ST 021551). The stand has an exhibition label attached.
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
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Inscriptions
Bulb: paper label on bulb: Cossor POINT ONE/HF AND/DETECTOR/SPECIALLY DESIGNED FOR HIGH FREQUENCY/COUPLING AND RECTIFICATI0N/258B/COVERED BY PATENT
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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
115 mm (Length), 45 mm (Outside Diameter)
On a stand with ST 021551
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Keywords