Test transmissions have begun for Smooth FM ahead of its launch on digital satellite.

Smooth FM leapfrogs KIIS to become Sydney’s most listened to FM station in the sixth radio survey of the year.

Ofcom is to consult the stakeholders of Smooth FM's over proposals to change its format to an over-50's easy-listening station.

Former radio host Jennifer Hansen quit her role on Smooth FM's popular breakfast program in December after nine years with the network.