What frequency range is classified as Very High Frequency (VHF)?

The classification of Very High Frequency (VHF) radio waves encompasses the frequency range from 30 MHz to 300 MHz. This range is significant because VHF frequencies are widely used for various types of communication, including FM radio broadcasting, television broadcasting, and two-way radio systems.

In this range, the propagation characteristics allow for line-of-sight communications, which means that VHF signals can travel considerable distances under optimal conditions while being less affected by some obstacles compared to lower frequency bands. This makes VHF suitable for applications such as aviation communications, marine communications, and emergency services.

The other frequency ranges represented in the choices correspond to different classifications in the electromagnetic spectrum. For instance, the range of 300 MHz to 3 GHz is classified as Ultra High Frequency (UHF), which has different propagation characteristics and applications, such as mobile phones and television. Similarly, the ranges of 3 GHz to 30 GHz and 30 GHz to 300 GHz fall under Super High Frequency (SHF) and Extremely High Frequency (EHF) respectively, which are used for radar, satellite communication, and other advanced technologies. Therefore, the range of 30 MHz to 300 MHz is uniquely identified as VHF, clearly validating the selection of this frequency