So, something like AX.25 [0][1] on the amateur radio VHF and UHF bands, which is free (once you have an appropriate license) and there is widespread citizen mai

So, something like AX.25 [0][1] on the amateur radio VHF and UHF bands, which is free (once you have an appropriate license) and there is widespread citizen maintained and managed infrastructure, such as repeaters. [2] 0. http://www.ax25.net/ http://www.ax25.net/ 1. https://en.wikipedia.org/wiki/AX.25 https://en.wikipedia.org/wiki/AX.25 2. https://ukrepeater.net/ https://ukrepeater.net/