Setup's Sharp Edges Don't Mar TinCan's Network-Free Messaging Potential

One lesson that's easy to learn if you've been through any natural disaster is that you shouldn't rely on classic means of communications like land lines, cellphones or Internet. Capacity gets challenged; infrastructure gets destroyed. Where I live, in brush-fire and earthquake-prone Southern California, neighbors have developed ham radio-based communications plans over the years that are geared solely towards communicating in a disaster. One area that I'm working on is text-over-radio.