Behind the Front Panel by David Rutland, an electronics engineer with over 25 years of experience in the design of vacuum tube circuits, explores the whys and wherefores of the components and circuits of the first broadcast radios. By using simplified descriptions and illustrations, supplemented by 25 photographs of actual radio component parts, he provides a readable explanation of what goes on inside the old battery radios. His story begins with the invention of the radio tube at the turn of the last century and concentrates on the engineering design and development through the 1920's. Design examples are taken from over 45 actual radios manufactured in the decade that saw broadcast radio start as a national pastime and end as a national necessity. This book is a classic in radio history. This edition is carefully re-mastered from the original and published by the California Historical Radio Society.

Step by Step Guide to making the most of your furniture.

Over 120 black and white photos and 175 patent drawing, charts, diagrams, and schematics trace a century's development of telephones, from Alexander Graham Bell's first box of 1877 to Trimline models from Western Electric. This valuable reference also provides technical information about their electrical circuitry and electrical measurements required to successfully repair, restore, and maintain a collection. Also included are a bibliography, an index, and a price guide for the telephones displayed. This reference is essential for every serious telephone collector, dealer, or restorer.

This excellent book focuses on restoring repairing, and refinishing those charming radios of the past. Discover basic, easy-to-follow techniques for repairing circuitry, troubleshooting, and cleaning up those radio treasures.

A page-turning novel that is also an exploration of the great philosophical concepts of Western thought, Jostein Gaarder's Sophie's World has fired the imagination of readers all over the world, with more than twenty million copies in print. One day fourteen-year-old Sophie Amundsen comes home from school to find in her mailbox two notes, with one question on each: "Who are you?" and "Where does the world come from?" From that irresistible beginning, Sophie becomes obsessed with questions that take her far beyond what she knows of her Norwegian village. Through those letters, she enrolls in a kind of correspondence course, covering Socrates to Sartre, with a mysterious philosopher, while receiving letters addressed to another girl. Who is Hilde? And why does her mail keep turning up? To unravel this riddle, Sophie must use the philosophy she is learning—but the truth turns out to be far more complicated than she could have imagined.