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AM broadcasts are used on several frequency bands. The allocation of these bands is governed by the ITU's Radio Regulations and, on the national level, by each country's telecommunications administration (the FCC in the U.S., for example) subject to international agreements. The frequency ranges given here are those that are allocated to stations.
Frequency allocation (or spectrum allocation) is the part of spectrum management dealing with the designation and regulation of the electromagnetic spectrum into frequency bands, normally done by governments in most countries. [1] Because radio propagation does not stop at national boundaries, governments have sought to harmonise the allocation ...
The extended mediumwave broadcast band, commonly known as the AM expanded band, refers to the broadcast station frequency assignments immediately above the earlier upper limits of 1600 kHz in International Telecommunication Union (ITU) Region 2 (the Americas), and 1602 kHz in ITU Regions 1 (Europe, northern Asia and Africa) and 3 (southern Asia and Oceania).
Each of these bands has a traditional name. For example, the term high frequency (HF) designates the wavelength range from 100 to 10 metres, corresponding to a frequency range of 3 to 30 MHz. This is just a symbol and is not related to allocation; the ITU further divides each band into subbands allocated to different services.
Typical mast radiator of a commercial medium wave AM broadcasting station, Chapel Hill, North Carolina, U.S. Medium wave (MW) is a part of the medium frequency (MF) radio band used mainly for AM radio broadcasting. The spectrum provides about 120 channels with more limited sound quality than FM stations on the FM broadcast band. During the ...
International amateur satellite frequency allocations Range Band Letter [a] Allocation [11] Preferred sub-bands [b] User status [11] Notes [11] HF: 40 m: 7.000 – 7.100 MHz: Primary 20 m: 14.000 – 14.250 MHz: Primary 17 m: 18.068 – 18.168 MHz: Primary Entire amateur radio band 15 m: H 21.000 – 21.450 MHz: Primary Entire amateur radio ...
Medium frequency (MF) is the ITU designation [1] for radio frequencies (RF) in the range of 300 kilohertz (kHz) to 3 megahertz (MHz). Part of this band is the medium wave (MW) AM broadcast band. The MF band is also known as the hectometer band as the wavelengths range from ten to one hectometers (1000 to 100 m).
Frequency range Notes longwave: 148.5–283.5 kHz: amplitude modulation (AM) low frequency (LF) Mostly used in Europe, North Africa, and Asia: AM radio (medium wave) 525–1606.5 kHz, 525–1705 kHz in N. America, Australia and the Philippines. amplitude modulation (AM) medium frequency (MF)