The Voice of the Crystal

By H. Peter Friedrichs

Chapters include the gallows headphone, the tin can headphone, the cigarette lighter headphone, the boom detector, the paper tube condenser, practical variable condensers, the roofing metal condenser,... This description may be from another edition of this product.

• Format: Paperback
• Language: English
• ISBN: 0967190509
• ISBN13: 9780967190501
• Release Date: January 1999
• Publisher: H Peter Friedrichs
• Length: 185 Pages
• Weight: 0.90 lbs.
• Dimensions: 5.5" x 8.5"

Customer Reviews

A fantastic book

This is a fantastic book. The author talks about building a working crystal radio including the basic physics/electronics. He then proceeds to build each of the necessary components (no store purchased diodes here) for the the detector, headphones, condenser and coil. If you like to make things, you will love this book.

An Historical Treasure

An amazing book! A real gem to own for anyone interested in understanding or building a radio from scraps. This simple little book is filled with illustrations and text that is worth more than 100 radio books put together. I bow to the author.

The Voice Of The Crystal by H. Peter Friedrichs

To many, crystal radio construction means purchasing electronic components to assemble into radios. The best tinkerers build their own! In The Voice Of The Crystal, author Friedrichs takes a step back in time to reveal the secrets of constructing all the necessary components "from scratch". Inside this volume you'll find 185 pages of practical information on the fabrication of electronic components suitable for use in building crystal radio sets. Basic theory and simple analysis are combined with dozens of examples of historical practice, work by contemporary experimenters, and construction details for many instruments fabricated by the author himself. Inside are discussions and plans for three different homemade headphones, (including one fabricated from cigarette lighter parts,) detectors, fixed capacitors, a rotary variable condenser, single layer, spider web and basket coils, and a precision double-slider coil. Throughout, the author shares his thinking and practical experience in the construction of these devices. The Voice Of The Crystal is profusely illustrated, containing well over 120 photos and hand-prepared illustrations.