What is the typical frequency range for wireless communication?

The typical frequency range for wireless communication is 20KHz to 300GHz. This range encompasses a variety of applications including audio transmission, radio broadcasting, television, and cellular communications. Frequencies within this range allow for effective transmission through the atmosphere, where electromagnetic waves can propagate efficiently.

Lower frequencies, such as those around 20KHz, are often used for AM radio and certain types of telemetry. As frequencies increase, they can support higher data rates and bandwidth, contributing to technologies like Wi-Fi, Bluetooth, and cellular systems that utilize higher frequency bands approaching the upper limit of this range.

The upper limit of 300GHz encompasses millimeter-wave technology, which is increasingly utilized in advanced telecommunication systems and radar applications. Frequencies above this level typically fall into the domain of infrared and optical communication, which involves different propagation characteristics and uses.

In contrast, the choices not selected do not accurately represent the standards or common practices in wireless communication. The ranges provided in those options either extend into frequencies which are not utilized for common wireless applications or do not cover the essential frequency bands that define typical wireless communication.