Radio frequencies are designated in units of:

Radio frequencies are typically designated in units of Hertz, which is a measure of the frequency of a wave in cycles per second. While Hertz is the basic unit, it is common to use larger units such as kilohertz (kHz), megahertz (MHz), and gigahertz (GHz) for convenience, as radio frequencies often fall within these ranges.

In the context of radio communication, megahertz (MHz) is a particularly relevant unit, as many radio frequencies used for communication, including those for two-way radios and television broadcasts, are measured in this range. For example, FM radio is typically broadcast within the range of 88 to 108 MHz. Thus, understanding that radio frequencies can be expressed in megahertz helps in comprehending the spectrum of frequencies used for various communication purposes.

Terahertz is much less common in practical radio frequency communication, as it refers to frequencies in the range of 1 trillion hertz, which is utilized for specific applications, such as imaging and spectroscopy rather than standard radio communication. Gigahertz represents an even higher frequency, which is often associated with microwave and satellite communication, but is not the primary unit used for many traditional radio frequencies.

Therefore, recognizing megahertz as the standard designation