Summary
High-mu triode intended for resistance coupled audio amplification (Class A). Manufacturer Raytheon.
The valve was designed for use in car radios, it was expensive. Bulb is made of steel, not glass, for rugged construction.
Metal valves were introduced in 1935 for use in car radios and other applications requiring rugged construction.
The octal base was introduced with metal tubes but soon appeared on glass tubes as well and remained the standard base for most American receiving tubes until the advent of miniature tubes in the 1940s.
6.3 volt indirectly heated cathode.
Physical Description
Octal base. Metal bulb with top cap.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Donation from G. H. Williams, 12 Jun 1973
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Manufacturer
Raytheon Mfg. Co., Newton, Massachusetts, United States of America, 1935-1945
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Inscriptions
Bulb: 6F5/Raytheon/Made in USA
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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
75 mm (Length), 33 mm (Outside Diameter)
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Overall Dimensions
75 mm (Length), 34 mm (Outside Diameter)
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Keywords