In April 1899, Professor Jerome Green and his electrical engineering assistants were experimenting with wireless telegraphy. Green is thought to be the first to send wireless transmissions in America and the first to use homemade equipment, as opposed to using a foreign-made apparatus.
After a series of experiments in Science Hall, Green transmitted a message a mile away to Saint Mary’s College. Scholastic reported: “This is the farthest distance a message has been sent in this country as far as we know and the boys in the scientific department feel highly elated over their success.”
Newspaper reporters were so impressed that The Chicago Tribune invited Green to test his equipment in the big city. After six hours of trial, he was able to prove the Marconi system of wireless transmission worked.