Radio at its core is a technology. Therefore, anyone who has ever spoken into a microphone or sat before a radio receiver owes an immense debt of gratitude to the many technical innovators who made it possible. Guglielmo Marconi, a diminutive Italian with enormous genius, first used electromagnetic (radio) waves to send a message. Marconi made his historical transmission, and several others, in the last decade of the nineteenth century. Relying, at least in part, on the findings of two earlier scientists, James Clerk Maxwell and Heinrich Hertz, Marconi developed his wireless telegraph, thus revolutionizing the field of electronic communications.
Other wireless innovators made significant contributions to the ...