Learning + Tutorials

For most of us, having access to electrical power has become so second nature that we hardly give it a thought. It's so abundant to be almost free, and there are lots of places all around to plug in your cell phone when it runs out of juice.

But if the grid goes down for a long period of time, or you need to charge your devices on the move, then you need to consider sources of portable power if you are serious about prepping.

If you don't always carry a compass around with you (who typically does?) then having the knowledge of how to find out your direction and where you want to go could be lifesaving.  

Editor’s note: The following excerpt was taken from FM 21-76: Survival Evasion and Escape, an Army field manual published in 1968.

As you probably know you can use radio waves to talk to people over the air. But did you know you could also send digital signals as well?