Summary
Transmitting triode consisting of four separate 75 watt triode structures connected in parallel to create a 300 watt device. Equivalent to the Eimac type 300TH.
The brand 'Gammatron' referred to a type of gridless triode pioneered by Heintz & Kaufman, mainly to avoid infringement of the triode patent and retained as a trademark long after they ceased making them.
Physical Description
Cylindrical glass bulb with a large 4 pin ceramic base, a metal ring around the bottom of the bulb carrying two grid connections and an anode pin at the top which still has its connector attached.
More Information
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Collection Names
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Collecting Areas
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Acquisition Information
Donation from Physics Department, Royal Melbourne Institute of Technology (RMIT), 22 Dec 1975
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Manufacturer
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Inscriptions
On bulb: GAMMATRON/304-H/ Heintz & Kaufman (logo)/842 (serial number)
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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
220 mm (Length), 89 mm (Outside Diameter)
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Keywords