That and possibly the Western intelligence/military has been training and providing hardware to the Ukrainians to set up redundancy in their network. The threat

That and possibly the Western intelligence/military has been training and providing hardware to the Ukrainians to set up redundancy in their network. The threat of invasion has been there since 2014. Which made me wonder whether an open-source kit to create an inexpensive 4G connection tower with an ethernet plug at the other end exists? Such a project would be _invaluable_ in areas hit by war or other disasters in the modern age of information. I'm thinking something as cheap as possible with an open-source firmware that can be flashed onto cheap hardware such as a Raspberry Pi: build it, flash it, plug it in. Is anybody working on this already?