One of the most significant areas where relays are used is in telecommunications and networking. Relays in this field help to extend the reach of communication signals, ensuring data can travel over long distances and through various obstacles. In wireless communication networks, relay stations improve coverage, especially in remote or hard-to-reach areas. This technology is especially crucial for cellular networks, such as 5G, where signal strength and reliability are essential for smooth data transfer.

    Relays also play a pivotal role in satellite communications. Communication satellites act as relay stations in space, forwarding signals from one ground station to another. These systems enable global connectivity, facilitating services like television broadcasting, internet access, and secure military communications.