Crystal Radio Patent

Published on 2007-08-17 by Mark VandeWettering

I was reading one of my books about crystal radios the other day, and they mentioned this patent. It’s hard to imagine the time period where this radio was considered innovative, but crystal radios are still pretty amazing little bits of electronic fun to hack together with kids. Winding coils, tickling crystals of galena… good stuff.

MEANS FOR RECEIVING INTELLIGENCE COMMUNICATED … – Google Patents

[tags]Crystal Radio,Patents[/tags]