Crystal Radio Patent

August 17, 2007 | General | By: Mark VandeWettering

Crystal Radio Patent DiagramI 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

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Comments

Comment from Frank Makinson
Time 9/1/2011 at 2:09 pm

I began my venture into radio in the 1940s, and even built a crystal radio just to demonstrate I could do it, although my primary radio building interest was with vacuum tube. You will like the math in my one and only IEEE publication, which you can read/download from my website. I even worked worked part-time for Leo Meyerson of World Radio when I was in high school. WA6FRO