Hey guys, been trying to Google tons of things but am striking out. I'm curious how the process of sending and receiving radio waves works. What I'm looking for, more specifically, is how do you send specific wavelengths and amplitudes and then once those waves are airborne, how do you create something to receive them? Everything I was finding on Google was just telling me to buy X piece of equipment to send and buy X piece of equipment to receive, but nothing really told or showed me HOW the process actually works. If anyone knows of a guide, tutorial, or maybe even the correct keywords to search for, I'd appreciate it. Thanks.