Many thanks to SWLing Post contributor Rich Cuff for this tip: EBC has released Parque do Rodeador: Half a Century of Transmissions, a five-part radio documentary (in English) exploring the history of Brazil’s Rodeador Transmission Park—one of Latin America’s most powerful broadcast centers. Launched in 1974 during the Cold War, it enabled Rádio Nacional’s shortwave and medium wave signals to reach across continents. The series covers its political and technical legacy, including Brazil’s international broadcasting efforts, the challenges of aging infrastructure, and the future of digital shortwave. Listen here.