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Description
Heintz and Kaufman Model 155 Gridless Gammatron. Although this model number was used on other models, this tube is clearly labeled on the glass as a 155, and is a rare example of this tube. The anode is like the model 55, with the gamma plate in the form of a cross, with two unused filaments. Anode plate 4 inches long, 1 5/8 inches wide; filament 5v, 9a (measured). Uses 204-A glass envelope.
Type
image
Identifier
04F6F848-27D3-434A-A4AA-415016825688 2003-1-6
Subject
Gammatrons Heintz and Kaufman Vacuum-tubes (LCSH) Heintz, Ralph M., Sr
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