This is a radio receiver used at WCC. Without a Receiver, none of the wireless messages could be read. Nobody would even know they had been sent.
This is an enigma machine. It was used to encrypt secret Nazi radio messages to keep the allies from discovering them. They were used extensively during World War II to keep wireless messages secret.
This is a model of the South Chatham Transmitting Station. At its peak, it was the largest U.S. Coast Station in the marine service.
This is an old transistor. It is much bigger than the ones used today, but it was the start of modern computing. Any modern smartphone has millions or billions of transistors inside of it.
These are various wireless phones from the past 30 years. They show how wireless communication has become much smaller, cheaper, and easier to use over time.
This is a remote-controlled drone. It uses radio to connect to a controller on the ground.