Crystal Radio
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The "Detector"

There are more detector types than what is on this page, but these two are the main types.

Old Catswisker Type Detector

The "Old Style" commonly called the "Catswisker" type detector. It has nothing to do with a cats wisker. It was called this because the tiny wire resembled a cats wisker. (see fig below)

It consists of a handle (black knob on the right), the boom (the rod from the handle to the "catswisker"), the "catswisker" (small wire on left end of the boom), and the galena crystal mounted in any of several ways (in this case mounted in woods metal. 


Modern Germanium Diode Detector


Crystal Radio
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