Radios are pretty awesome.
If you’re interested in how things work in general, the radio will impress you. You can instantly send and receive information. This might not seem like much with today’s technology and the Internet, but radio is used for so many tasks, especially with airplanes.
Radio signals are so important for various industries, especially the military. Throughout history, the radio played a huge role in the military.
The video above gives a great explanation of how a radio works.