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.

92.7 BIG FM is a nationwide private FM radio station in India owned by Indian businessman Anil Ambani. It broadcasts at 92.7 MHz (92.7FM).

Currently, it covers 45 cities. This is the only private FM radio station which is being broadcast from Srinagar and Jammu in Jammu & Kashmir state. It has made an announcement to invest Rs. 4,000,000,000 dedicated to transmission equipment, infrastructure and licensing; which would make the proposed network the largest ever.

From July 1, 2008, BIG FM included Singapore, the first city outside India, in its broadcasting network. It broadcasts its programmes daily from 5 to 8pm on XFM 96.3, under the name of 'BIG Bollywood 96.3FM'.

BIG FM is the radio partner for the Bangalore Restaurant Week an event involving reportedly, the best restaurants in Bangalore. A number of radio contests are expected to be aired that enable contestants to win prizes.

Famous RJs of Big FM include Rj anirudh & RJ Nitin from Mumbai, RJ Balaji from Chennai who is popular for his show "cross-talk". RJ Rohith who's bagged the prestigious "IRF Best Kannada RJ of the year 2009" and "IRF Best Kannada Show of the year 2009" and RJ Nethra who kept the momentum by bringing back the titles "IRF Best Kannada RJ of the Year 2010" and "IRF Best Kannada Show of the Year 2010" from the Indian Radio Forum and RJ Shekar Basha from Hyderabad,who has the record of winning the "Highest number of IRF Awards in India with a total of 10 awards to his Credit,which include 2 Best promos,5 Best Breakfast shows,3 RJ of the year Awards in a span of 5 years i.e 2007-2011 ,and the latest being "IRF Best Telugu RJ of the Year 2011".