In 1940, Amado Trinidad Velazco became the owner and various Cuban stations merged with CMHI, among which were CMCF and CMKO thus forming Radio Habana Cuba, with its offices at Prado #54, corner of Capdevila Street.
RHC Cadena Azul employed 40 singers, 34 actors, 18 announcers, 20 writers, 10 composers and 10 bands.
Some famous musicians of RHC Cadena Azul were Iris Burguet, Manolo Álvarez Mera, René Cabell, Vicentico Valdés, Miguelito Valdés, Joseíto Fernández and Barbarito Diez; actors like Rita Montaner, Jesús Alvariño, Rolando Ochoa, Leopoldo Fernández Salgado, Aníbal de Mar, Otto Sirgo and Rosendo Rosell.
Mexican artists who worked at the studios between 1942 and 1946 included Jorge Negrete, Tito Guizar and Pedro Vargas, and Argentine entertainer Libertad Lamarque.
In 1952, Trinidad sold the network to Bed Marving of the U.S., who changed its name to Cadena Azul de Cuba.