Showing posts with label Radio Communication. Show all posts
Showing posts with label Radio Communication. Show all posts

Thursday, December 27

Types of Radio Communication

Introduction to Types of radio communication

Radio communication is the transmission of radio signals. These signals are electromagnetic frequencies. The frequencies are modulated for communication and they are less than the frequency of visible light.

These electromagnetic radiations travel through air and vacuum. In order to carry the information, some of the properties are modulated, or changed. The properties of radio waves are amplitude, phase and frequency. I like to share this Wavelength Color Spectrum with you all through my article.

About Types of Radio Communication

Radio waves are non-ionizing radiation.  The frequency of the radio waves differs for different applications:

1. 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.

2. 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.

3. 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

4. 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.

5. Heating: radio frequencies are used to generate heat inside generatingequipment. 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.

6. Amateurradio: this radio offers several frequencies for amateurs who are licensed to communicate.

7. Radar for radio detection and ranging uses radio waves for detecting objects at a distance

8. The recent addition is the radio signals for transmission of digital data.

Conclusion for Types of Radio Communication

Radio waves are transmitted through air or vacuum for various purposes by modulation in the properties. They do not charge the particles of the medium they travel through. The frequency range of radio is between a few hertz to three hundred gigahertz. There are several types of radio communication used for all the above discussed purposes.