By 1952 he was making frequent appearances at the Tibidabo cabaret and was often heard on Radio Belgrano.

The practice made the newly-christened "Radio Belgrano" the most coveted employer in Argentine radio and by the 1930s, it enjoyed the nation's highest ratings.

Allowing critical commentary of Perón's inaugural address following the event, Radio Belgrano was suspended by government order for one month.

The experience persuaded Yankelevich to sell Radio Belgrano to the state for US$1.5 million in 1947.

At age 18 he joined the cast of Radio Belgrano as a soloist and back-up musician.

Ortega also worked near Radio Belgrano, where many of the singers he met while selling coffee near the television station would recognize him and form a bond with the young star in the making.

As a radio journalist, he took part of 'Sport 80' programme (Radio Mitre) and as a host of 'Otro automovilismo' broadcast on Radio Belgrano.

In 1934, she was invited as a guest performer in Radio Belgrano in Buenos Aires.

In 1944, at the age of 18, he joined Raúl Kaplún's orchestra after winning a local contest and soon gave his live debut performance on Radio Belgrano.

In the 1950s, Antonio bought the media companies Radio Belgrano, Canal 7 and the Télam agency.