HEATKEYS

The Society, founded in 1991, publishes a newsletter and several books about crystal radio. Content: crystal set projects, tips for crystal radio design, and crystal radio / antique radio history.

Over 100 Crystal radios and tube radio projects and plans made by Dave Schmarder are available on makearadio.com. I encourage all to make a little radio for yourself or build with your kids. This is a fun and relaxing hobby for people of all ages. I ...

Crystal Radio web site. Crystal radio plans, crystal radio circuits, crystal radio schematics are all right here. Sound powered headphones and how to use them on crystal radios. Crystal Radios, Crystal Set, Crystal Sets, Catswiskers, Science Fair Cry...

QRP ARCI - QRP Amateur Radio Club International The largest QRP club with nearly 14,000 members. Great magazine - QRP Quarterly. Contests, awards, projects, club forum, QRP ARCI SSB Hoot Owl Sprint, Status of the latest issue of QRP Quarterly magazi...

Make toys at home with common household materials, often in only a few minutes, that demonstrate fascinating scientific principles.

The American Radio Relay League (ARRL) is the national association for amateur radio, connecting to hams around the U.S. with news, information and resources.

YouTube is a place to discover, watch, upload and share videos.

Stone Vintage Radio describes early radio from Marconi to the 1960s. Its covers antique radio, wireless, tubes, valves, crystal sets, and battery radios. Included in the virtual museum are hundreds of pictures, images, and descriptions of antique rad...

Make toys at home with common household materials, often in only a few minutes, that demonstrate fascinating scientific principles.

Instructables is the Biggest How To and DIY community where people make and share inspiring, entertaining, and useful projects, recipes, and hacks.

Bestcrystals.com is the online Rock Shop of hundreds of crystals, minerals, fossils from around the world, from $1 to grade

WA?TP

music theory, composition, analysis