~RADIO~

The first precedents of the radio are from the end of the XIX century, with the invention of the voltaic battery by Alessandro Volta. Since them, the first telegraph started to be built and they advanced thanks to Samuel Morse's invention: The Morse Code. 

In 1876 it was discovered that sound could be listened through a cable but it was at the end of the XX century when they achieved the transmission of human voice, causing a big change.

Marconi's knowledge let the signals to spread for 20 km, a big achievement for that period and for the evolution of the radio.

In Latin America the radio arrived on august 27th, in 1920 in Buenos Aires. The first transmission was a Richard Wagner's Opera. In Mexico it was in 1930 with the first commentator: Arturo de Córdoba.

Nowardays everybody can listen to the radio because it is much more accesible.


The actual radios are more moderns andhave more channels that sometimes have a spokeperson. The most famous channels now in Spain are:

1. Cadena 100














2. Los 40















3. Europa FM