Beartooth was a bust from the start. They came out with a firmware update that sounds like it works better now. There original plan was never going to work. What they came out with was about 50% of what they promised. Their support sucked.

goTenna is fantastic. Tons of Mesh Nodes out there for public to use. There is no voice with it. There is a company making a self contained goTenna Mesh system like a repeater for a radio. Battery, Solar, Antenna, everything for like $1500. There are quite a few SAR teams using the Pro version of goTenna with ATAK. Pricey stuff but pretty cool.

If you are looking for this off grid comm capability goTenna is kicking ass