What range of frequencies do Radio Frequencies (RF) encompass?

The range of frequencies that Radio Frequencies (RF) encompass is indeed from 3 kHz to 300 GHz. This range is recognized by telecommunications and regulatory agencies worldwide, including the Federal Communications Commission (FCC) and the International Telecommunication Union (ITU). RF is broadly used for various forms of wireless communication, including radio, television, and cellular networks.

The lower frequency limit, starting at 3 kHz, marks the beginning of the audio frequency range, which can be used for AM radio broadcasts. The upper limit of 300 GHz falls within the microwave spectrum, encompassing applications such as satellite communication and radar technology. This broad spectrum allows for a diverse array of communications technologies, making it essential for different operational needs in aviation, telecommunications, and beyond.