👉 Relay engineering is the specialized field focused on designing, developing, and optimizing communication networks that enable data transmission over long distances using relay nodes. These nodes act as intermediaries, receiving signals from a source and retransmitting them to extend the network's reach and improve signal strength, particularly in scenarios where direct line-of-sight is not feasible, such as in wireless communication systems or satellite networks. Relay engineers work on various aspects, including signal amplification, error correction, routing protocols, and network topology optimization to ensure efficient, reliable, and high-capacity data transfer. Their expertise is crucial in creating robust communication infrastructures that support modern applications like mobile networks, the Internet of Things (IoT), and global satellite communications.