Experimenters notes on Vacuum Tube Substitutions, Inexpensive Tube Power Supply, Grid-Leak Detectors, Regenerative Receiver and more! Vacuum tubes are to the electronics industry what steam locomotives are to the railroading industry: hot, inefficient maintenance headaches. But like a steam locomotive, a tube has a simple fascinating charm that no high-tech chip can match. You must try building a simple radio with tubes!

By Harold Cones, Ph,D., John H. Bryant, FAIA The previously untold story of the Zenith Trans-Oceanic, the world's most romantic and expensive series of portable radios in a newly revised and expanded edition. With access to the Zenith corporate archives and the author's experience and knowledge of radio, Professors Bryant and Cones present the engrossing stories of the development and use of the Trans-Oceanic throughout its forty years of life. 159 pgs, 11 x 8.5

Edited by: Hugo Gernsback A reprint of Gernsback’s 1938 special issue of Radio-Craft magazine which commemorated the first 50 years of radio. Contains the reminiscences of radio pioneers DeForest, Sarnoff, Conrad, Crosley, McMurdo Silver and others, as well as the famous Gernsback predictions for the next 50 years. Also details the progression of the vacuum tube, mileposts in television and famous early radio circuits. 144 pages, hundreds of photos. 1.2 lbs.

by George J. Christ Radio Tube Fundamentals was originally published in 1951 and this a reprint of the original. This book is aptly tightled and lays out the basics of vacuum tubes from the physics involved to everything a person needs to understand triodes, tetrodes, pentodes, grid bias applications and other tube related fundamentals. This is a great book for your reference shelf and vital for those who want to know about the inner workings of vacuum tubes. 96 pages, softcover, 0.32 lbs, 5.5 x 8.5