Custom Homebrew Crystal Radio (c. 1920) Models on Display:Homebrew Crystal Radio The Motorola MicroTAC DPC 550

The Motorola MicroTAC DPC 550

this clever "decision-tree" machine became a massive educational hit

and corporate boardrooms

CEO Roberto Goizueta took the radical step of discontinuing the original 99-year-old formula entirely

Max Headroom

Custom Homebrew Crystal Radio (c. 1920) Models on Display:Homebrew Crystal Radio The Motorola MicroTAC DPC 550Custom Homebrew Crystal Radio First Widely Adopted Consumer Radios The homebrew crystal radio boom of the early 1920s was a massive grassroots phenomenon that allowed millions of everyday people to pull voices and music straight out of thin air without ever plugging into a wall or buying an expensive battery. Because commercial radios were a luxury far out of reach for the working class, a generation of amateur builders and curious kids turned to DIY