Summary
This valve contains two identical independent medium mu triode units in the one bulb. Mainly used for audio amplification (Class A amplifier). The base notice about replacement use only suggests production during World War II (1939-1945).
Manufacturer: Raytheon Manufacturing Co., Newton, Massachusetts, USA.
6.3 V indirectly heated cathode.
Physical Description
Small shouldered bulb (with top cap) on 8 pin octal style base.
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, 19 Apr 1972
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Manufacturer
Raytheon, Newton, Massachusetts, United States of America, circa 1944
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Inscriptions
Bulb: 6F8G Base: Raytheon/Made in USA/For replacement use only/M-R
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Brand Names
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Classification
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Category
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Type of item
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Overall Dimensions
108 mm (Length), 38 mm (Outside Diameter)
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Keywords