• #1 Vacuum Tube Substitutions, Inexpensive Tube Power Supply, Grid-Leak Detectors, Regenerative Receiver and more!  Highlights:  putting newer tubes into older circuits, low power-tube experimenter's power supply, there are tables reproduced from the Radio Construction and Repairing guide - original copyright 1927-1933 for radio receiving tube average characteristics and much more!
• #2  Build a Grid Dip Oscillator, a Shortwave Converter, a Slow-Motion Dial Drive, Space-wound coins & More!  Highlights:  the article on the Grid Dip Oscillator is reprinted from the Millen 90651 instruction manual, calibration chart for the Grid Dip Oscillator and how to create one and much more....
• #3  Build an Impedance Bridge, a One-Tube SW Receiver, a Headphone Amplifier, Old-Time Radio Cases and more!  Highlights:  Measuring unknown transformers and chokes, building a tuned amplifier.....More useful ideas for the radio builder. With schematics, drawings, and photos. Jam-packed like the first three volumes.
• #4 Build a TRF Regen Receiver, One-Tube Crystal Converter, Versatile Power Supply, Slide Rule Dial and....here you get tips, tricks and hints and details on building components and test equipment that will help you to put your radio on the shortwave frequencies you desire and carefully tune in the station you want.  There's more!
• #5  Build a Superhot Receiver!  Coil Winding Machine, Simple Alignment Oscillator, IF Transformers...Highlights:  excellent images and diagrams!
• #6   Loose-Coupler!  Active Long Wire Antenna, Regenerative Loop Receiver, Transmitter Experiments!  Construction of Receiving Apparatus for a Modern Wireless Station (reprinted from the Electrician and Mechanic Magazine July 1991)

Tricks, tips and secrets to help the builder of simple radios and electrical gear achieve high performance at minimal cost!  Heavily illustrated. More ideas than you'll be able to pursue in a month of Sundays. Order a gift set today - for yourself, a friend or your favorite ham radio operator!