The Impoverished Radio Experimenter Series (All 6 Volumes)
This series is intended mainly to show how you can substitute bits.
In Vol. 1 there are notes on Vacuum Tube Substitutions, Inexpensive Tube Power Supply, Grid-Leak Detectors, a Regenerative Receiver and more!
Vol. 2 subjects include a Grid Dip Oscillator, a Shortwave Converter, a Slow-Motion Dial Drive, Space-wound Coils.
Vol. 3 include Building an Impedance Bridge, a One-Tube SW Receiver, a Headphone Amplifier, Old-Time Radio Cases etc.
Vol. 4 includes: Building a TRF receiver, a One Tube Crystal Converter, Versatile Power supply and a Slide rule Dial.
Vol. 5 includes: building a Superhet Receiver, a Coil Winding Machine and a simple Alignment Oscillator, plus all sorts of tricks, tips and secrets.
Vol. 6 covers building a Loose-Coupler, an Active Long Wire Antenna, a Regenerative Loop Receiver, transmitter experiments and the like.
Useful stuff! Well produced 48 page booklets.
288 pages in total!!