Summary
Triode-pentode used as a frequency changer in television receivers from circa 1965 until the end of the valve era in television, circa 1969.
6.3 V indirectly heated cathode.
Designed for use in VHF television tuners, the triode section was uses as the local oscillator, the pentode section as the mixer. Also known as ECF86 in Europe.
Physical Description
Tubular glass bulb with exhaust tip on top with nine pin miniature configuration.
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
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Manufacturer
Unknown Source, circa 1965
There is no indication of the manufacturer on the valve itself but the deleted object summary (see Notes) asserts that it was manufactured by Mullard in Australia. This must be based on information that is no longer in the record. If it was indeed branded Mullard and as being made in Australia (these markings having been subsequently rubbed off) then the actual manufacturer would have been Philips, Hendon, South Australia. -
Inscriptions
Yellow label: T42/6HS(torn off) Pink label: 6HG8
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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
54 mm (Length), 21 mm (Outside Diameter)
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Keywords