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Unit-01: Growth of Radio
Lecture-01: What is Radio? Evolution of Radio
World History of Radio

Out come of the unit: Recall1 growth of Radio
Sub Topic:What is Radio? Evolution of Radio
Objective:At the end of this sub topic students will able to
-The concept of ‘Radio’
-History of of radio
-Need and importance of radio in human life

-The transmission and reception of electromagnetic waves of radio
frequency
- Radio, sound communication by radio waves.
- The radio receives electromagnetic waves from the air that
are sent by a radio transmitter.
- The radio receives electromagnetic waves from the air that
are sent by a radio transmitter.

-
-Electromagnetic waves are a combination of electrical and magnetic
fields that overlap.
-The radio converts these electromagnetic waves, called a signal
into sounds that humans can hear.
-The wireless transmission and reception of
electric impulses or signals by means of
electromagnetic waves
-The use of these waves for the wireless
transmission of electric impulses into which
sound is converted

-
-Electromagnetic waves are a combination of electrical and magnetic
fields that overlap.
-The radio converts these electromagnetic waves, called a signal
into sounds that humans can hear.
-The wireless transmission and reception of
electric impulses or signals by means of
electromagnetic waves
-The use of these waves for the wireless
transmission of electric impulses into which
sound is converted
Importance of Radio:
-Communication
-Entertainment
-Education
*Radio as a development agent
*Radio as a source of entertainment
*Political broadcaster for strengthen democracy
*Helps to promote Governmental policy
*Rural broadcasting for rural development

Department of J&MC 15
- 1901 - A radiotelegraph service was instituted between five hawaiian islands
- 1903 - A Marconi station located at Wellfleet, Massachusetts carries an
exchange between President Theodore Roosevelt and King Edward VII
-1905 - The naval battle of Port Arthur in the Russo-Japanese war was reported
by wireless
-1906 - The US Weather Bureau experiment with radiotelegraphy to speed up
notice of weather conditions
-1909 - Robert E. Peary, Arctic explorer, radio telegraphed : “I found the Pole”
-1912 - The first Transpacific radiotelegraph service is linked between San Francisco
and Hawaii

4/9/2023 Department of J&MC 16

First radio factory was established I Chelmsford
-Radio link between Britain and France was
discovered

First radio factory
Use of Radio at the beginning:
-Solders communication
-News on scientific topic(space,
planet, discoveries)
-NASA- Satellite information
-Communication in seniour authority in
USA

Radio’s Commercial Potential:
-After the World War I radio ban
lifted with the close of the conflict in 1919.
-A number of small stations began
operating using technologies that had
developed during the war.
- Many of these stations developed regular
- programming that included religious sermons,
- sports, and news.

- America and European countries collaborated
started the National Broadcasting Network (NBC)
in 1926
- . Groups of stations that carried syndicated
network programs along with a variety of local
shows soon formed its Red and Blue networks.

The Origins of Prime Time:
-During the evening, many
families listened to the radio
together, much as modern families
may gather for television’s prime
time.
-Popular evening comedy variety
shows such as George Burns and
Gracie Allen’s Burns and Allen,
the Jack Benny Show, and the Bob
Hope Show all began during the
1930s.

Instant News:
Radio news became even
more important during World
War II, when programs such
as Norman Corwin’s This Is
War!

- The Radio Act of 1927 established the Federal
Radio Commission (FRC) to oversee regulation of
the airwaves.
- Columbia Broadcasting System (CBS) and
National Broadcasting Network (NBC)

The Birth of the Federal Communications
Commission:
- The Communications Act of 1934 created the Federal
Communications Commission (FCC) and ushered in a new era
of government regulation.

The Golden Age of Radio:
-Golden Age of Radio occurred between 1930 and the mid-
1950s.

FM: The High-Fidelity Counterculture:
-Between the years 1960 and 1966, the number of
households capable of receiving FM transmissions
grew from about 6.5 million to some 40 million.
In 1974, FM radio accounted for one-third of all radio
listening but only 14 percent of radio profits

The Rise of Public Radio:
-Groups such as the Ford Foundation had funded
public media sources during the early 1960s.
-When the foundation decided to withdraw its
funding in the middle of the decade, the federal
government stepped in with the Public Broadcasting
Act of 1967.
-This act created the Corporation for Public
Broadcasting (CPB) and charged it with generating
funding for public television and radio outlets.

The Rise of Public Radio:
-Until 1982, in fact, the CPB entirely and exclusively
funded NPR(National Public Radio).
Public Radio International (PRI) and local public radio
stations such as ‘Wbez’ in Chicago have also created a
number of cultural and entertainment programs

Home work:
1. Do you think that radio could experience another golden age?
Explain your answer.
2. Explain the advantages that radio had over traditional print
media

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