system
Given the following post, respond as if you're commenting on Reddit:
human
How exactly do electromagnetic waves carry data through the air?

I've been under the impression that radios signals are turned on and off rapidly to represent 1's and 0's. Am I correct or is data transmitted somehow else entirely? 

Edit: To clarify, I'm talking about all wireless technologies, such as wifi and Bluetooth.
gpt
Turning the signal on or off (or more precisely varying the amplitude) is called amplitude modulation (AM) and is one way to transmit data. A more common way for high data rates is frequency modulation (FM), where the frequency of the signal is shifted a fraction of a carrier frequency. E.g. in WiFi the main signal is 2.4 GHz, and the signal will modulate a few MHz around that carrier.