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Radio frequency (RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in the frequency [1] range from around 20 kHz to around 300 GHz.

The radio spectrum is the part of the electromagnetic spectrum with frequencies from 3 Hz to 3,000 GHz (3 THz). Electromagnetic waves in this frequency range, called radio waves, are widely used in modern technology, particularly in telecommunication.

2025年2月25日 · Scanner Frequencies and Radio Frequency Reference for Amateur Radio (United States)

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2023年7月17日 · Different radio frequency bands across the radio spectrum are used by different agencies and groups for communications. While some radio frequency bands may be used for …

2023年4月10日 · Your FM radio can tune in to that specific frequency and give you clear reception of that station. All FM radio stations transmit in a band of frequencies between 88 megahertz and 108 megahertz. This band of the radio spectrum is used for …

Explore the airwaves of the world through a thorough map of AM frequencies and FM frequencies. Here you will find a comprehensive list of countries sorted according to the continent they belong to. Select the AM or FM frequency option under each flag to open a list of radio broadcasters using these frequencies to transmit in that territory.

The radio spectrum is the radio frequency (RF) portion of the electromagnetic spectrum. In the United States, regulatory responsibility for the radio spectrum is divided between the Federal Communications Commission (FCC) and the National Telecommunications and Information Administration (NTIA).

Definition: A part of the electromagnetic spectrum that holds the least frequency range and highest wavelength is known as the radio frequency spectrum. It is sometimes referred as radio spectrum or radio wave spectrum. Generally, the radio spectrum has a frequency range between 30 kHz to 300 GHz.