From a transmitter atop Mount Grey, the station can be heard over much of North Canterbury, covering the Waimakariri District, much of the Hurunui District and Selwyn District, and in greater Christchurch. Compass FM also have two repeaters transmitting on 103.7 MHz covering Hanmer Springs, as well as Cheviot, along State Highway 1, through to Kaikoura, as well as from Waikari heading through to the Lewis Pass.