Radio

RADIO

COMMUNICATIONS 20092653 Choi Mi Ri

01 World history of radio broadcasting

Marconi

Wireless telegraph invention

Decisive role in the emergence of ra-dio broadcasting

Marconi made the first wireless telegraph

01 World history of radio broadcasting

MorseThe first telegraph message trans-mission through wired telegraphy

Hertz Discovered the presence of high-fre-quency

Bell Telephone invention (1875)The likelihood of success of wireless telegraphy Preview

The rapid development of wireless communication technology

Triode since the invention of the United States de-Foret (1906)

02 History of radio usage

Of the First World War, the military use of wireless communication

After the war the United States through a radio receiver for sale bangtaek

Presidential election broadcast the first official broadcast of KDKA broadcasters

From established broadcasters throughout the 1920s

Broadcast nature of the entertainment increase

02 History of radio usage

Financial difficulties faced by advertising introduced an operating ap-proach adopted

The Great Depression of the 1930s, the radio activa-tion

By FM 1933 to Major Armstrong appeared

Radio's golden age from the mid-1930s until 1950,

Local broadcasters in the program itself, rather than a net-work program in the 1960s are beginning to focus

03 Radio development process step

Stages of the wireless transmission

1920 birth of the first radio broad-caster

Step of broadcasting net-work

Provide to local broadcasters nationwide broad-cast

with the advent of the radio network

Stages of local music and news

Reconfiguration was in the form of the music of non-broadcast local news and information pro-

grams that provide formatting

The era of digital technology

~ 1920

1930~1940

1940~1950

From the late 1950s

04 The history of radio broadcasting in Korea

* Broadcasting history, origin 5 set

1927,2,16JODK countries, First broadcast

1933,4,26Koihime transmitting station, Seogyo saenggim

1945,8,15U.S. military liberation, affective broadcast received - Koreans elected as a director

1947,9,3HL callsign grant

1948,8,15Publications under the Government of the Republic of Korea to establish, KBS entering

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