RADIO COMMUNICATION SYSTEM
What is Radio Communication System?
A biometric system is a technological system that uses information about a person (or other biological organism) to identify that person. Biometric systems rely on specific data about unique biological traits in order to work effectively. A biometric system will involve running data through algorithms for a particular result, usually related to a positive identification of a user or other individual.
ABOUT TYPES OF RADIO COMMUNICATION
Radio for Audio
Amplitude modulation is used to transmit audio signals from one place to another through air or vacuum. There is a transmitter for transmitting signals and a receiver at receiving end to absorb signals.
Telephony
The cell phone communication uses radio signals. Earlier phones used frequency modulation; however some of the recent technologies are digital modulation of radio waves.
Video
The television signals are transmitted as radio signals. These signals are sent with amplitude modulation for video and FM or AM for sound. The frequency of video radio waves is 4.5 MHz
Navigation
Satellite navigation systems use radio signals to communicate. A satellite transmits the signals and based on the position of the satellite and the tangential line around each satellite, the computer that receives the signal calculates and determines the position.
Heating
Radio frequencies are used to generate heat inside generating equipment. Microwave ovens use radio waves for heating food. Surgery equipment diathermy uses radio frequency for sealing blood vessels. Several induction furnace use radio waves for melting metals.
Amateurradio
This radio offers several frequencies for amateurs who are licensed to communicate.