I came across this Hackaday project that looks interesting. So I thought I’d share it 🙂
NPR (New Packet Radio) is a custom radio protocol, designed to transport bidirectional IP trafic over 430MHz radio links (ham radio). This protocol is optimized for “point to multipoint” topology, with the help of managed-TDMA. Bitrate is up to 500kbps (net, effective bitrate). The radio modem is cheap (~80$) and home-made, with a 433MHz ISM module inside. The modem is connected locally with Ethernet, therefore no specific software is needed on PC. The modem is easy to build and reproduce.
More info can be found at Hackaday.io