Summary
6.3 V indirectly heated cathode, manufactured for the Royal Air Force (R.A.F.), England, 1940-1945.
VR53 is the Royal Air Force designation for the commercial EF39 valve. It is a remote cut-off pentode designed for use in radio and intermediate frequency amplifiers.
Physical Description
Small shouldered glass bulb with top cap on octal base. Sprayed metallic coating has almost completely fallen off the bulb (valve is kept in plastic bag).
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Unknown Acquisition Method from Unknown Source, 1981
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Manufactured For
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Inscriptions
Bulb: (illegible)E/11388/A(inverted broad arrow) Paper label on base: VR53
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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
100 mm (Length), 30 mm (Outside Diameter)
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Keywords