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Frequencies Modulation 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)
The AM expanded band in Japan extends to 1629 kHz. 1620 kHz and 1629 kHz are normally used by Highway advisory radio and/or Roadside Stations along stretches of major expressways. Many Japanese AM radios, car stereos and other receivers (walkman, etc.) can tune up to 1629 kHz. 1611 kHz is rarely used in Japan.
The following is a list of AM radio stations transmitting in C-QUAM stereo throughout the world, which can be sorted by their call signs, frequencies, cities of license, country of origin, licensees, and programming formats. Japanese stations sometimes omit the JO prefix in favor of just the last two letters of their callsigns. Australia issues ...
This page was last edited on 18 January 2025, at 10:08 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
Class B and D stations can be found on any frequencies from 540 kHz to 1700 kHz except where frequencies have been reserved for Class C stations. Class C stations can be found in the lower 48 US states on the frequencies of 1230 kHz, 1240 kHz, 1340 kHz, 1400 kHz, 1450 kHz, and 1490 kHz (commonly known as "graveyard" frequencies).
In the late 1970s, spurred by the exodus of musical programming to FM stations, the AM radio industry in the United States developed technology for broadcasting in stereo. Other nations adopted AM stereo, most commonly choosing Motorola's C-QUAM, and in 1993 the United States also made the C-QUAM system its standard, after a period allowing ...
The legally protected range of a station extends beyond this range, out to the point where signal strength is expected to be 1mV/m for most stations in North America, though for class B1 stations it is 0.7mV/m, and as low as 0.5mV/m for full class B stations (the maximum allowed in densely populated areas of both Canada and the U.S.).
In the Americas (defined as International Telecommunication Union (ITU) region 2), the FM broadcast band consists of 101 channels, each 200 kHz wide, in the frequency range from 87.8 to 108.0 MHz, with "center frequencies" running from 87.9 MHz to 107.9 MHz. For most purposes an FM station is associated with its center frequency.