Summary
Four pin base with bulb known as DFA4 Triode. Made by Mullard in England circa 1924-26.
Other models such as DFA0 and DFA1 were introduced in 1925.
Physical Description
European style four pin base with bulb.
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, 26 Mar 1973
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Manufacturer
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Inscriptions
Bulb stamped with BBC license stamp: Mullard Valve/DFA4
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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
120 mm (Length), 45 mm (Outside Diameter)
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Keywords