Which frequency range is categorized as High Frequency (HF)?

The High Frequency (HF) radio wave category is defined by a specific range of frequencies, which is from 2 MHz to 29.999 MHz. This frequency range is critical for various forms of long-distance communication, particularly in conditions where other frequency bands may not perform well, such as over the horizon propagation.

HF bands are widely utilized in maritime, aviation, and amateur radio communications because they can reflect off the ionosphere, allowing signals to travel beyond the line of sight. Understanding this frequency range is essential for radio operators and communication professionals, as it informs which equipment and technologies can be effectively utilized for HF communication.

The other frequency ranges mentioned do not fall under the HF classification, as they are categorized as Very High Frequency (VHF) and Ultra High Frequency (UHF) bands. Thus, recognizing that 2 to 29.999 MHz is the designated HF range is crucial for anyone studying communications equipment and their appropriate applications.