There was interest in radio almost from broadcasting's earliest days. Due to the proximity of Cuba to the U.S. state of Florida, some Cubans would try to listen to the American stations whose signals reached the island. But there was no radio station in Cuba until 1922.
The arrival of the first radio station, PWX, was greeted with enthusiasm. PWX, owned by the Cuban Telephone Company, was located in Havana. It was a joint venture with the International Telephone and Telegraph Company of New York.
PWX debuted on the air on October 10, 1922. PWX broadcast programs in both English and Spanish, and its signal was easily received at night in a number of American cities.
Another early station in Cuba was owned by Frank Jones, an American amateur radio operator and Chief Engineer of the Tuinucu Sugar Company. The station used amateur call letters, and went on the air as 6KW.
In late 1928, PWX began using the call letters CMC. Its slogan was "If you hear 'La Paloma,' you are in tune with CMC."
As with many other countries, interest in radio expanded, and by 1932, Cuba had more than thirty stations, spread out in cities all over the island.