In your daily life, you probably enjoy uninterrupted access to mobile networks, allowing you to place calls, send messages, and browse the web from your phone. We all tend to take this luxury for granted, but you will face times when this connectivity is unavailable. Perhaps you're embarking on a camping expedition in a remote area lacking mobile network coverage. Or you might be with your friends at a crowded festival where the mobile network becomes unreliable. In worst-case scenarios, you might find yourself in a disaster where the mobile network is completely down.

What if you could set up your own mobile network in such scenarios? It turns out you can. Meshtastic [1] lets you to establish your own local wireless mesh network using affordable, low-power devices. The mesh network allows you to stay connected with friends or family and send text messages to each other in areas without an existing or reliable communications infrastructure.

Meshtastic is not a complete replacement for a mobile network. You can't place phone calls or download massive amounts of data, and the range depends on your environment and the location of other devices in the mesh network. However, Meshtastic offers connectivity where other options fail. In most situations, the direct range is up to a few kilometers, but Meshtastic devices have the capability to relay messages from others, thereby extending the range. To better understand these bandwidth and range limitations, it is important to start with a look at the underlying technology.

[...]