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Daystrom-Heathkit Resistance Substitution Box

Abstract

Daystrom-Heathkit Resistance Substitution Box illustrated with photo of unit and diagrams. Resistor arrays were switched by knobs, the underside diagram looks like a DNA Double Helix.
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Daystrom-Heathkit. Daystrom-Heathkit Resistance Substitution Box. Daystrom-Heathkit. 1962.

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From the Experimental Television Center archive

ETC1495

Daystrom-Heathkit Resistance Substitution Box illustrated with photo of unit and diagrams. Resistor arrays were switched by knobs, the underside diagram looks like a DNA Double Helix.

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Last modified 22 June 2011