Media UK

Single frequency network

A single frequency network is the name given to a network of transmitters which have been specially treated to broadcast on one single frequency.

An example of this is DAB digital radio, where one frequency is used for each multiplex. Another example is XM or Sirius satellite radio in the USA, where terrestrial transmitters re-broadcast satellite signals to aid reception in built-up areas.

Benefits are that transmitters combine to give stronger and more robust coverage.