In this video I break out the Tektronix 2235 oscilloscope and the Heathkit IT 12 to take a close look at a crystal radio I picked up many years...
From his first long nose pliers, at the age of six, to his private use of the chemistry lab at his junior high-school, Pete Friedrichs, AC7ZL, has...
The crystal radio set was part of the history of amateur radio. These crystal sets were widely used in the 1920s and 1930s, ultimately being...