TECHNOLOGY

                      Radio technology

      

              Radio has transformed the society about three times,not to mention giving birth to the entire field of electronics.At the end of 19th century ,when the radio was arrived few thoughts that 'wireless'communication .The early inventors studied the work of Scottish physicist James clerk Maxwell ,who has formulated a set of equations.Radio is the technology of using radio waves and to carry about the information may be as sound etc. Radio system needs a transmitter to modulate some properties of energy produced to impress a signal on it.example.angle modulation.Radio system also needs the antenna to convert the current into radio waves and radio waves into electric current.An antenna is a substance that can be used for transmitting and receiving.Radio frequency occupy the range from a 3 kHz to 300 GHz.Radio can be used as to pass o orders and communication between armies and navies on both sides Another important application is used for detecting and locating aircraft and ships by the use of radar. Radio can be taken in many forms such as wireless networks and mobile communication etc.It was an unique methods of dramatic presentation in that it used only as sound.