Single frequency networks

Single frequency networks (SFNs) are a form of broadcasting network, usually digital, in which all the national radio stations are broadcast on a single frequency.

This differs from conventional FM networks, in which stations are broadcast over many frequencies to avoid technical problems.

Single frequency networks usually use COFDM modulation.

The British digital radio[?] network uses SFN technology.

External links

http://www.ntl.com/locales/gb/en/guides/anoraks/whyneed.asp#1.2.6

		Single frequency networks
		Single frequency networks (SFNs) are a form of broadcasting network, usually digital, in which all the national radio stations are broadcast on a single frequency. This differs from conventional FM networks, in which stations are broadcast over many frequencies to avoid technical problems. Single frequency networks usually use COFDM modulation. The British digital radio[?] network uses SFN technology. External links http://www.ntl.com/locales/gb/en/guides/anoraks/whyneed.asp#1.2.6
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