 After three years with the military, however, he left to study mechanical engineering and electro-technology in the technical university in Charlottenburg, Berlin, from 1893.There he became acquainted with Professor Adolf Slaby, who had participated in Guglielmo Marconi's transmission experiments on the coast of the English Channel.Building on these attempts, Arco and Slaby in the summer of 1897 used the free-standing bell tower of the Church of the Redeemer, Potsdam, as an antenna, to verify and understand Marconi's experiments.