In 1919, after World War I had ended, the United States House of Representatives directed the U.S. Navy to lift the prohibition on amateur radio operations. This ban had been in place during the war as a national security measure to prevent potential espionage and interference with military communications. The lifting of the prohibition allowed amateur radio operators, often referred to as “hams,” to resume their activities. This decision marked the resurgence of amateur radio in the U.S., allowing operators to experiment with and advance radio technology, thereby contributing to the growth and development of the hobby and the broader field of radio communications.
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