History of Radio

SPARK
1895 by Marconi
AM
1906 by Fessenden
SHORTWAVE
1921 by Conrad
FM
1931 by Armstrong
DIGITAL
2000 by XM

A. Scientists

B. Inventors

Marconi at his Instrument in the station on Signal Hill, St John's, Newfoundland, from Scientific American

C. Amateurs

D. Government

E. Corporations

from Sarnoff Corp.

F. Programs

Next - Radio's Golden Age 1935-50

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