This book shows you how to make your own crystal radio using a beer can, toilet roll tube, cardboard, aluminium kitchen foil, wire and a few components. Full step by step instructions are given along with photographs to show you what to do. A crystal radio is a small simple radio receiver that enables you to listen to analogue AM radio using a crystal ear piece. The radio requires no batteries and is not plugged into the mains! Other books simply show you how to connect together purchased components; this book will show you how to make some of your own components (variable capacitor and coil). Please note that to build the radio you will need to purchase a diode, crystal earpiece, screw terminals and some wire form a suitable electronics component supplier or ebay :) . All other materials used are standard household items. Children should be supervised during construction due to the use of scissors and glue gun.
I'd love to see your finished radios! Please tweet them to me @bighead_org_uk
Most Helpful Customer Reviews
I would like to add that you can have home made diodes using galena or pyrite with wire contacts. Make your own diode with copper and aluminum strips of metal. In between them melt Rochelle salt mixing one part each graphite and molybdenum dioxide or maybe cerium oxide to make your crystal diode.
Easy to understand and much better than buying a kit with parts that were all plastic crap. I bought the stuff needed at radio shack and it works beautifully.
what a neat idea!!! a condenser or variable capacitor made from a beer can. this is one of those Ideas?? that I will keep in the same file bin as The voice of the crystal H, Peter Fredrichs and Instruments of Amplification same author.
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