Communication Devices – Radios, Signal Mirrors, And Whistles For Emergency Communication
Radios, Signal Mirrors, And Whistles For Emergency Communication Imagine you’re lost in the wilderness, your cell phone’s dead and you’re miles away from any known civilization. You’d probably think you’re doomed, right? Not necessarily. In an age of smartphones and satellites, it’s easy to forget about the old-school communication devices like radios, signal mirrors, and … Read more