duplexers

/ˈduːplɛksərz/
noun
  1. Devices that allow a communication system to send and receive signals simultaneously over the same channel.
    • The radio technician installed duplexers so the tower could transmit and receive at the same time.
    • Modern walkie-talkies use duplexers to enable full-duplex communication.
    • The engineer explained how duplexers separate incoming and outgoing signals in a satellite link.