ELI5: Explain Like I'm 5

Two-way radio

Two-way radios are special types of radios that allow you to talk to someone else in a different place. They use special antennas to send and receive messages back and forth between two people. The messages travel through the air and through your radio so that the person you're talking to can hear you. Two-way radios allow you to have a conversation with someone in a different place without needing a phone or an internet connection.