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A invenção da torre de rádio AM teve um impacto profundo na radiodifusão. Mas surgiu durante o final do século 19, quando os cientistas buscaram maneiras de transmitir sinais sem fio a longas distâncias. Guglielmo Marconi, um inventor italiano, tinha conseguido comunicação sem fio de longa distância, mas a qualidade e o alcance eram limitados, levando à necessidade de melhores métodos de transmissão. Nascido em 1906, Reginald Fessenden transmitiu com sucesso o primeiro programa de áudio usando ...
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