 Reuben Larson and D. Stuart Clark, along with Ecuadorian lawyer Luís Calisto, worked to procure the initial contract.On August 15, 1930, the Ecuadorian Congress approved a bill which granted Jones a 25-year contract to operate a radio station in the country.As with all countries having a governing body over broadcast operations, the call letters HCJB were obtained through the government of Ecuador, beginning with the internationally allocated prefix for Ecuador's broadcast stations (HC).