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Category:Cat's-whisker detector

This category is for an antique radio component also called a crystal detector, consisting of a mineral crystal with its surface touched by a fine wire, or two crystals touching, used as a detector in early crystal radios, or modern reproductions of this device. It is not for modern point-contact semiconductor diodes.

Media in category "Cat's-whisker detector"

The following 21 files are in this category, out of 21 total.