The Wave is an LPFM radio station broadcasting from the bell tower at All Saints Church in Sumner. The transmitter has a power of 500mW, ... See more which is just sufficient to reach most of the houses in Sumner. The station transmits on 88.5 FM. If you are tuning in with a radio receiver on your stereo system, you will need to make sure the FM aerial is connected. Sorry, the programme is only available in the Sumner area.