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The station unofficially began broadcasting during the Bay of Pigs Invasion in order to spread news of the attack, and the Cuban defence against it, internationally. The existence of the as-of-yet unnamed station was announced by Fidel Castro in a speech the next day on 17 April 1961, celebrating the invasion's defeat, with Castro announcing that Cuba had already in operation a short wave radio station, able to carry the "truth" about Cuba beyond its borders. The station was officially launched a few days later on 1 May 1961, with its name proclaimed as Radio Havana Cuba, during a mass rally at Plaza de la Revolución in Havana held to celebrate Cuba's victory over the US-sponsored invasion attempt.