三岩木

98FM is an independent local radio station in Dublin, Ireland, operated by Radio Two Thousand Limited, a subsidiary of Denis O'Brien's Communicorp, under a sound broadcasting contract from the Broadcasting Authority of Ireland. The station broadcasts on the 98.1 MHz FM frequency. 98FM's broadcast antenna is located on Three Rock Mountain, County Dublin at 5 kW, and can be heard in Dublin and neighbouring counties.

Three Rock Mountain (Irish: Binn Trí Charraig; archaic: Sliabh Ruadh) is a mountain in Co Dublin, Ireland. It is 444 metres (1,457 feet) high and forms part of the group of hills in the Dublin Mountains which comprises Two Rock, Three Rock, Kilmashogue and Tibradden Mountains. The mountain takes its name from the three groups of granite rocks at the summit.