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The Electric Telegraph
The electric telegraphs revolutionized long-distance communication, replacing earlier semaphore communication lines. In addition to its primary use for point-to-point messages, other applications were developed, including printing telegraphs ("tickers") used for distributing stock quotes and news reports -
maker of radio
•Guglielmo Marconi (1874-1937) is widely recognized as the father of radio as we know it. He received a patent for his "wireless telegraph" in 1896 in England. -
Broadcasting After World War One
Although still unfocused, scattered broadcasting activities, taking advantage of improvements in vacuum-tube technology, accelerated after the end of the Great War. Initially there was a shortage of equipment, especially vacuum-tubes, due to ongoing patent disputes, and many of the early efforts were government related or by persons who had access to surplus military equipment. But the experiments continued to expand, as the radio industry returned to civilian control. -
first radio station
•The first radio station in America, with the call letters 8XK, began operations in 1919—out of Frank Conrad's garage in Pittsburgh -
federal commission
The Federal Radio Commission
established to bring
order to chaotic airwaves. -
FM radio
•FM radio made its first appearance in 1939. -
quick catch up
1959 Radio signal from first human-made object to leave Earth, USSR probe Luna 1
Radio signal from first human-made object to reach another world, USSR probe Lunik 2 on the Moon
Radio-photos from first spacecraft to go behind the Moon, USSR probe Lunik 3
The integrated circuit (IC) is introduced
First communication satellite, Echo, launched by US -
DAB
late 1920s and the early 1950s is considered the Golden Age of Radio, in which comedies, dramas, variety shows, game shows, and popular music shows drew millions of listeners across America.
developments in radio is Digital Audio Broadcasting, or DAB. In the works since the late 1980s, it had not received FCC approval as of early 1999 -
Pcs services
The FCC permitted spread
spectrum, the technology of
choice for many of today’s
digital, commercial cellular
and PCS services. -
stailite radio
XM Satellite Radio -
internet radio Evolved
Internet radio broadcasting became more Prominent -
what it all lead up to
Since that time, there has been no looking back. Radio has now become a popular medium of portable entertainment. In 21stcentury, technological advancements have given birth to internet radio. Satellite radio is also recent development in the field. One can listen to various international radio stations without any hassles. -
FUN FACTS
174,034,091
The approximate number of people 12 and older in the U.S. and Puerto Rico who hear radio every day 30 The approximate number of different station formats. 1,100 The approximate number of hours the average listener 12 and older hears radio each year. 6,108 The number of new radio stations since 1970. 12,853 The approximate number of radio stations currently operating in the United States.
