- published: 26 Dec 2014
- views: 221239
FM broadcasting is a broadcasting technology pioneered by Edwin Howard Armstrong which uses frequency modulation (FM) to provide high-fidelity sound over broadcast radio. The term "FM band" describes the "frequency band in which FM is used for broadcasting". This term is slightly misleading, since it equates a modulation method with a range of frequencies.
Throughout the world, the FM broadcast band falls within the VHF part of the radio spectrum. Usually 87.5 to 108.0 MHz is used, or some portion thereof, with few exceptions:
The frequency of an FM broadcast station (more strictly its assigned nominal centre frequency) is usually an exact multiple of 100 kHz. In most of the Americas and the Caribbean, only odd multiples are used. In some parts of Europe, Greenland and Africa, only even multiples are used. In Italy, multiples of 50 kHz are used. There are other unusual and obsolete standards in some countries, including 0.001, 0.01, 0.03, 0.074, 0.5, and 0.3 MHz.
Frequency modulation (FM) is a form of modulation which conveys information over a carrier wave by varying its frequency (contrast this with amplitude modulation, in which the amplitude of the carrier is varied while its frequency remains constant). In analog applications, the instantaneous frequency of the carrier is directly proportional to the instantaneous value of the input signal. This form of modulation is commonly used in the FM broadcast band.
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Actors: Rebecca Hu (producer), Rebecca Hu (director), Yaz Rabadi (editor), Jason Fraser (actor), Adrian Gorrissen (actor), Jacqueline Tarne (actress), Rebecca Taylor (miscellaneous crew), Charlotte Powell (actress), Cathy Young (actress), Stephen Lee (miscellaneous crew), Cathy Young (actress), Samuel Holwell (actor), Joanne Leylan (actress), Koom Kankesan (writer), David Kennet (actor),
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Genres: Comedy, Short,