 In 1967 Unión Radio, a group of radio stations of Cali (Radio Uno, Radio el Sol), Pereira (La Voz Amiga, La Voz de Pereira), and Bogotá (La Voz de Bogotá, Emisora Monserrate), joined the network.De la Roche's brothers Jaime and Jairo, who also were part of the network, would leave and became executives of rival networks Caracol Radio and RCN Radio, respectively.Todelar had its golden era in the 1960s and 1970s, broadcasting live sports events such as the Vuelta a Colombia, and the 1966 FIFA World Cup, or radioplays like "La ley contra el hampa", a crime drama, or the Colombian version of the Mexican hit "Kalimán".