Grayson County (Sherman/Denison) Texas amateur radio repeaters. W5DWH 145.330 Mhz Grayson County, TX Weather Bunch Discussion Repeater. W5RVT 147.000 Mhz Grayson County, TX ARES/SKYWARN VHF Primary Repeater. W5COP 147.280 Mhz Grayson County, TX ARES/SKYWARN VHF Secondary Repeater. W5RVT 444.750 Mhz Grayson County, TX ARES/SKYWARN UHF Backup Repeater. Feed is provided through a Radio Shack PRO-2040 scanner.