(1) Broadcasting has a wide range, fast propagation speed and strong penetration. This feature is the advantage of internal and external broadcasting. But in the external communication, this advantage of broadcasting is more prominent.
(2) Radio is more penetrating than newspapers and television. Therefore, the range it can reach and the speed of spreading information far exceed that of newspapers and television. The practice of international communication has proved this point.
(3) Radio is transmitted by sound. The charm of sound lies in that it not only spreads information, but also integrates information into the understanding of communicators, providing help and guidance for people to understand and accept information.
Extended data:
Precautions:
On Christmas Eve of 1906, Fessenden and Alexander set up a radio station near new york and broadcast it for the first time. The broadcast includes two jokes, a song and a violin solo. At that time, the scattered receivers clearly heard the broadcast.
1908, ABC made another broadcast on the Eiffel Tower in Paris, which was received by all local military stations and an engineer in Marseille.
19 16, forest broadcasted the news about the presidential election again in an experimental station of the Bronx Information Bureau, but few people could hear these early broadcasts.
References:
Baidu Encyclopedia-china national radio
Baidu encyclopedia-radio station