Shortwave, but not quite broadcasting: America calling Juanita. "Juanita Castro, the younger sister of Cuban leaders Fidel and Raul Castro, worked for the CIA during some crucial years of the Cold War, she says in her new memoir. ... The CIA communicated through a short-wave radio. At an appointed hour daily, if the waltz 'Fascination' aired on the radio, Castro would know that a message would follow. An overture from 'Madame Butterfly' meant that no message was coming, according to the book. A special code was made up of numbers, which Castro would decode with a manual, she wrote." CNN, 27 October 2009. This was from 1961 until she left Cuba for the United States in 1964.
(Kim Elliott)
(Kim Elliott)
Castro's sister: She helped CIA against Cuban leaders
http://edition.cnn.com/2009/WORLD/americas/10/27/castro.sister.cia/