Which frequency range characterizes UHF?

The frequency range that characterizes Ultra High Frequency (UHF) is from 300 MHz to 3 GHz. This range is part of the electromagnetic spectrum used for various types of communication services, including television broadcasting, mobile phones, satellite communication, and wireless microphones. UHF is known for its relatively short wavelengths, which allow for higher frequency signals to efficiently penetrate through obstacles like buildings and trees, making it a suitable choice for urban communication applications.

In the context of radio communications, UHF is particularly advantageous for line-of-sight transmissions and has the ability to support a large number of communication channels within its bandwidth, which is critical for reducing interference between different services. The other frequency ranges listed do not correspond to UHF; for instance, the range from 30 kHz to 300 MHz corresponds to Very High Frequency (VHF) and sub-VHF communications, while frequencies from 3 GHz to 30 GHz belong to Super High Frequency (SHF), often utilized for radar and satellite communications. Hence, identifying the correct range supporting UHF is essential for understanding how different radio waves interact with the environment and are utilized for communication.