Have you heard about a “Amateur radio” station with IP based network? I don’t know for sure, if you need some information about radio project, this project gives us a good reference.
According to this project, NPR (New Packet Radio) is a custom radio protocol, designed to transport bidirectional IP traffic over 430MHz radio links (ham radio). This protocol is optimized for “point to multipoint” topology, with the help of managed-TDMA. The below link explains about this project in detail.
Let’s see the demo clip and please visit the below Hackaday project page for more details.