People always need to be informed about what is happening in your world, to which man has devised various means that have him result very useful to be always informed of the various events that occur in the world and among these media is the radio, which allows access to reported thanks to the radial locutions of diverse centers of reported or such a way more colloquial stations. The radio thanks to the different components that comprise it, manages to recover the signal of a radio station and thus the information; but the radio is not only used as a means of obtaining information, put that in in the various radio frequencies they can find to so different kinds of stations, will have stations dedicated to providing information, others to the fun for listeners, with youth programs and the transmission of music of different styles. In accordance with the above the radio, is an electronic device, thanks to which it manages to get the signal transmitted by many radio transmitters, signal that moves to through electromagnetic waves. Speaking of operation the radio in a way that is understandable ara worldwide, which makes the radio is to act as a receiver due to an electrical circuit that facilitates the recovery of the radio frequency signal, so with your design you can identify and separate small streams that are generated in the antenna as a result of electromagnetic wavesthus identifying and separates streams the radio can amplify selectively signal, then this amplified signal goes to an element of the radio which allows the signal to be heard and that element is an electromagnet, that would be the speakers, where is already passed electrical information to sound on the radio. In order to capture different signals and can tune in the radio receiver makes use of a variable capacitor, which in the majority of antique radios which was next to a button control or knob, so that by pressing the control button or knob will change the capacity of the condenser, which are filtering the currents of different frequencies and this be can hear different signals from the stations. The receiver initially turned out something very rudimentary and did not offer very good reception, since only received very strong frequency signal, more forward applied new components that made it possible to increase the capacity of reception of rays, thanks to the valve’s emptied. With transistors, will introduce smaller receivers that allowed radios had more capacity reception but on smaller proportions. But in the spokes not only have changed the components, Tambo applied new techniques to improve performance, such as frequency modulation, single sideband, digital modulation among many others, which aggregates new components and configurations of the radio have done that this device has excellent capacity of reception of the signal of radio transmitters..