Uudelleenlähettimet

Uudelleenlähettimet, often referred to as repeaters in English, are electronic devices used to regenerate and retransmit a signal. Their primary function is to extend the range of a signal, whether it be radio waves, data signals in a network, or other forms of communication. By receiving a weak or degraded signal, a repeater amplifies and cleans it up before sending it onward. This process allows signals to travel much further than they would be able to on their own.

In telecommunications, repeaters are crucial for long-distance communication systems. For instance, in early telegraphy, repeaters were used to boost the signal strength along long cables. Similarly, in modern cellular networks, repeaters are deployed in areas with poor reception to improve coverage. They receive the signal from a base station or a mobile device, amplify it, and retransmit it, ensuring a stronger connection.

In computer networking, repeaters operate at the physical layer of the OSI model. They are simple devices that connect two network segments and regenerate digital signals. When a signal traveling through a network cable becomes too weak due to distance or interference, a repeater receives the weakened signal, cleans it up, and broadcasts a fresh, strong copy of the signal on the other side. This helps maintain data integrity over longer cable runs. However, repeaters do not perform any intelligent traffic management or routing; they simply amplify and retransmit whatever signal they receive.