Coastal Plains ARC 147.285Mhz Repeater are used by local amateur radio operators, such as Coastal Plains Amateur Radio Club from Tifton, Georgia, United States, to ... See more fill the area between Warner Robins and Valdosta Georgia on Interstate 75, linked in the Tall Pines Network in South Georgia, as part of the network of amateur emergency service scanner repeaters that provide coverage of local emergency service broadcasts.