By Richard McWhorter Understanding and restoring transformerless radios of the 1940’s, 1950’s and 1960’s. 92 pages. Begins with a description of the fundamentals of direct current and alternating current. Also included is some basic information about resisistors. Circuits are discussed in detail beginning with the simplest and progressing to those that are quite complex. When you finish this book, you should be able to read and understand all of the electronic symbols and the functionality of each radio circuit. 92 pages, 0.5 lb, 7 x 10

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!

Volume 5 in a series that contains tricks tips and secrets to help the builder of simple radios and electrical gear achieve high performance at minimal cost. This volume contains how to build a Superhet receiver, coil winding machine, simple alignment oscillator, IF Transformers and more. 48 pages, .25 lbs, 5.5 x 8.5"

The sixth book in this series of books for the economically minded radio experimenter, this edition features projects on building a loose-coupler, active wire antenna, and regenerative loop reciever as well as information on sigle tube transmitters and transmitter experiments. 48 pages, 5 2/3 x 8 1/2" booklet.