What is the main characteristic of simplex channels?

Simplex channels are designed for communication that occurs in one direction only. This means that they operate on a single frequency for transmitting information but do not allow for simultaneous sending and receiving of messages. As a result, when using a simplex channel, one party can send information while the other party must wait for their turn to respond, which is a key characteristic of simplex communication systems.

This one-way communication is commonly utilized in various applications, including certain radio communications and some types of remote control systems, where feedback from the receiver is not required at the same time as transmission occurs. Understanding simplex channels is crucial, especially in scenarios where clarity and order in communication need to be maintained without the complications of simultaneous dialogue.