In $1901,$ the first transatlantic wireless signal was broadcast. Developed and marketed by Italian inventor and engineer Guglielmo Marconi, Marconi radios $($wireless telegraph technology$)$ had many benefits, including ending the isolation of ocean travel and, for example, saving the lives of the approximately $700$ Titanic survivors $($more lifeboats would have saved the other $1,500$ passengers, but that$$s another issue$).$

The wireless telegraph brought its own set of problems, however. Which of the following statements identifies the major issue faced with the advent of the wireless telegraph?