radiocommunikation
Radiocommunication is the transmission of information by means of radio waves. These waves are electromagnetic waves of a frequency below that of visible light and above those of electric power transmission. Radiocommunication is used for a vast array of purposes, including broadcasting, mobile telephony, navigation systems, and remote control.
The fundamental principle of radiocommunication involves a transmitter, which generates radio waves modulated with the information
The radio spectrum, the range of frequencies used for radiocommunication, is a finite resource that is carefully