This is a great project for ham radio.

An APRS digipeater is a device used in the Automatic Packet Reporting System (APRS) network, a type of amateur (ham) radio network used for real-time communication and location sharing. The term "digipeater" comes from "digital repeater." A digipeater receives digital data packets, such as location information or messages, and retransmits them, usually at a higher power or from a location with better coverage, to extend the range of the original transmission.

APRS is commonly used for sharing the location of moving objects (like cars, boats, or individuals), weather station reports, and for text messaging between amateur radio operators. Digipeaters are crucial for the APRS network to function over larger areas, as they help in bridging the gaps between stations that are too far apart to communicate directly. They operate automatically, picking up signals from nearby stations and rebroadcasting them to others, often improving the reliability and reach of the network.