FM broadcasting

FM broadcasting is a VHF 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 a given country which is dedicated to FM broadcasting. This term is slightly misleading, as it equates a modulation method within a range of frequencies.

Broadcast bands

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:

In the former Soviet republics, and some former Eastern Bloc countries, the older 65–74 MHz band is also used. Assigned frequencies are at intervals of 30 kHz. This band, sometimes referred to as the OIRT band, is slowly being phased out in many countries. In those countries the 87.5–108.0 MHz band is referred to as the CCIR band.

In Japan, the band 76–90 MHz is used.

The frequency of an FM broadcast station (more strictly its assigned nominal center frequency) is usually an exact multiple of 100 kHz. In most of South Korea, the Americas, the Philippines and the Caribbean, only odd multiples are used. In some parts of Europe, Greenland and Africa, only even multiples are used. In the UK odd or even 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. However, to minimise cross-channel interference, stations operating from the same or geographically close transmitters tend to keep to at least a 0.5 MHz frequency separation even when closer spacing is technically permitted, with closer tunings reserved for more distantly spaced transmitters as potentially interfering signals are already more attenuated and so have less effect on neighbouring frequencies. RCA stereo models use multiples of 0.2 MHz, starting at 87.50 and ending at 107.90.

Radio

Radio is the use of radio waves is to carry information, such as sound, by systematically modulating some property of electromagnetic energy waves transmitted through space, such as their amplitude, frequency, phase, or pulse width. When radio waves strike an electrical conductor, the oscillating fields induce an alternating current in the conductor. The information in the waves can be extracted and transformed back into its original form.

Radio systems need a transmitter to modulate (change) some property of the energy produced to impress a signal on it, for example using amplitude modulation or angle modulation (which can be frequency modulation or phase modulation). Radio systems also need an antenna to convert electric currents into radio waves, and vice versa. An antenna can be used for both transmitting and receiving. The electrical resonance of tuned circuits in radios allow individual stations to be selected. The electromagnetic wave is intercepted by a tuned receiving antenna. A radio receiver receives its input from an antenna and converts it into a form usable for the consumer, such as sound, pictures, digital data, measurement values, navigational positions, etc. Radio frequencies occupy the range from a 3 kHz to 300 GHz, although commercially important uses of radio use only a small part of this spectrum.

'Fm Radio' is featured as a movie character in the following productions:

The Waiting Room (2009)

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),

Plot: The Kilhungers are a brother and sister psychiatrist team whose secret miracle cure has kept their patients Ed, Carl, Warren and Linda coming back for more. But what the patients don't know is that they're not the only ones who have trouble leaving this place. And unfortunately, the voices they hear in their heads might not be imagined after all. The inhabitants of this waiting room may not always get along and it can sometimes get a little crowded, but at least its home.

Genres: Comedy, Short,
Taglines: The Past belonged to Medication, the Future belongs to Medication!

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Traxx FM Radio Interview

published: 08 Feb 2017

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LILY M OBONU FM RADIO INTERVIEW

OBONU FM RADIO INTERVIEW

published: 13 Dec 2016

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