[SystematyK]

Here is some info about it:  https://meshtastic.org/
Here is a subreddit for it:  https://www.reddit.com/r/meshtastic/

Meshtastic is essentially good for localized communications, the more nodes there are around you, the further your able to reach.  Many people set up solar based nodes around their area so they can reach further without needing external power.

Local listings for nodes:  https://meshtastic.org/docs/community/lo...ups/#texas