ADVANTAGES OF RADIO
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Uses of Radio
Design
Some advantages
- You can advertise your product on radio and the rate of advertisement is usually lower than other medium of communication.
- Important information or news can be easily spread on radio.
- For local market radio is one of the powerful medium of communication.
- Radio can be enjoyed at home, in office, while driving car and can be enjoyed any where.
- Radio channels varies from region to region, hence you can listen radio in your regional language.
- Like other entertainment media, Radio is also favourite of large number of population.
Radios consist of many specialized electronic circuits designed to perform specific tasks—radio frequency amplifier, mixer, variable frequency oscillator, intermediate frequency amplifier, detector, and audio amplifier.
The radio frequency amplifier is designed to amplify the signal from a radio broadcast transmitter.
The common uses of radio during earlier times were for communications and sending massages. Today, radio takes many forms which includes wireless networks as well as mobile communications of all kinds and also radio broadcasting. Commercial radio broadcasts includes news, music, dramas, comedies, variety shows and different other forms of entertainment.
History
In 1864 James Clerk Maxwell showed mathematically that electromagnetic waves could propagate through free space. The effects of electromagnetic waves (then-unexplained "action at a distance" sparking behavior) were actually observed before and after Maxwell's work by many inventors and experimenters
Etymology
The term "radio" is derived from the Latin word "radius", meaning "spoke of a wheel, beam of light, ray". It was first applied to communications in 1881 when, at the suggestion of French scientist Ernest Mercadier, Alexander Graham Bell adopted "radiophone" (meaning "radiated sound") as an alternate name for his photophone optical transmission system.
What is Radio?
Radio is the use of radio waves to carry information, such as sound, by systematically modulating some property of electromagnetic energy waves transmitted through space, such as their amplitude, frequency, phase, or pulse width.