Founded in 1928, under the name "LS5 Estación Rivadavia". In 1933, he aired the most successful and long-lasting program on Argentine radio: La Oral Deportiva, which was the first radio program dedicated to sport. Who had as his maximum reference to the Big Fat José María Muñoz, the most important sports journalist in the history of Argentine radio.

In 1958 “El Rotativo del Aire” began creating a new system of its own and permanent journalistic coverage that included external and local correspondents. It was covered from the studies, to the Government House to keep the listeners informed from different parts of Buenos Aires. Something new at that time.