[DVD] RADIO

[DVD] RADIO

Age Rating: 12+

Runtime: 109 min

Language: English

Subtitle: Korean, English, Chinese, Thai

Aspect Ratio: 1.85:1 Widescreen

Synopsis:

Radio is the technology of communicating using radio waves. Radio waves are electromagnetic waves of frequency between 3 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmitter connected to an antenna which radiates the waves. They can be received by other antennas connected to a radio receiver; this is the fundamental principle of radio communication. In addition to communication, radio is used for radar, radio navigation, remote control, remote sensing, and other applications.