March 7, 1924 (on February JiaZi third), the radio broadcast of 7000 miles. On the evening of March 7


1924, the New York banquet speech on the table after six radio stations broadcast 7,000 miles, covering two continents, and establish a milestone in the history of radio. The signal emitted by the radio station from New York flew over the nationwide spread to San Francisco, then British radio broadcast to Manchester. cheering
landmark broadcast radio connected to a model of the world's people. Recent figures show that nearly 800 radio stations in the United States, 15 million American households now have a radio receiver, and that number is growing rapidly.