uudelleenlähetin

Uudelleenlähetin is a Finnish term that translates to "repeater" in English, commonly used in the context of radio communication and networking. It refers to a device that receives a signal, regenerates it, and then retransmits it at a higher level or on a different frequency. The primary purpose of a repeater is to extend the range of a signal, overcoming limitations caused by distance, terrain, or obstructions.

In radio communications, such as for amateur radio operators or public safety services, repeaters are strategically placed on high ground or in elevated locations. They receive weak signals from mobile or handheld transceivers and retransmit them with greater power, allowing users to communicate over much longer distances than would otherwise be possible. This is particularly useful in areas with poor propagation conditions.

In the realm of computer networking, a network repeater functions similarly by regenerating and retransmitting data signals. It connects two or more network segments, effectively extending the network's physical reach. However, modern networking often employs more sophisticated devices like switches and routers, which offer intelligent data handling and routing capabilities, making standalone repeaters less common in wired Ethernet networks. The term "wireless repeater" is still widely used for devices that extend the range of Wi-Fi networks.