Fifty years ago, the September 1972 issue of Electronics Illustrated carried this sampler of small projects for the electronic hobbyist. Of course, of special interest to our readers is the one-tube receiver shown at the upper left. The regenerative set, using a 1U4 tube tuned the broadcast band and 3-14 MHz in three bands. In addition to a flashlight battery to light the filament, it used a 45 volt B battery.

Also of interest was the two-transistor QRP transmitter that put out one watt on 80 meters. The author, Herb Cohen, pointed out that the little rig was “just the ticket for QRP contests, field trips and any other time you really want to pit your savvy against the vagarities of radio communications.” The set ran on 12 volts.