-
Heinrich Hertz
Detects and produces radio waves. -
Marchese Guglielmo Marconi
Builds his first radio equipment, a device that will ring a bell from 30 feet away -
American scientist R.A. Fessenden
Transmists human speech via radiowaves -
Marchese Guglielmo Marconi
Transmits telegraphic radio messages from Cornwall to Newfoundland -
Valdemar Poulsen
Patents an arc transmission that generates continuous radio waves, producing a frequency of 100 kHz and receivable over 150 miles. -
Marchese Guglielmo Marconi
Invents the directional radio antennae -
R.A. Fessenden
First radio program of voice and music broadcast in the U.S. -
R.A. Fessenden
Invents a high-frequency electric generator that produces radio waves with a frequency of 100 kHz. -
Edwin Armstrong
Patents a radio receiver circuit with positive feedback. Part of the amplified high-frequency signal is fed back to the tuning circuit to enhance selectivity and sensitivity. -
Edwin Armstrong
Develops the superheterodyne radio receiver. The principle for this receiver is the basis for all radio receivers now in use.
A 200 kW alternator starts operating at Station NFF, the Naval station in New Brunswick NJ, which was the most powerful radio transmitter of the time. -
WCBN
Hosts the first National Association of College Broadcasters. -
Ann Rebentisch
February: First WCBN fundraiser is organized, and raises $5,000.
