SA GRN Site - Adelaide Location - 91 KING WILLIAM ST CURRIE ST FRONTAGE ADELAIDE (Santos House) Lat/Long -34 55 34 / 138 35 50 Data Channel 413.3125 Voice Channels 412.5625 412.8125 413.0625 415.3125 415.8125 416.0625 416.3125 416.5625 416.8125 417.0625 417.3125 417.5625 417.8125 (Backup data channel) 418.5625 (New) 412.6500 (New) 413.1500 (New)