DTV RECEPTION PROBLEMS?
Try “double rescanning”. Double-check and relocate your antenna. Double Check & Relocate Your Antenna. You must have a “VHF/UHF antenna. “Rabbit ears,” rods, or other elements are needed to pick up channels 2-13 (VHF), and a circle, bow-tie, or other element is needed to pick up channels 14-51 (UHF). Some antennas marketed as HDTV antennas don’t perform well on VHF channels; some antennas are VHF or UHF-only. For the best reception of channels 2-6, extend the rods all the way out. For the best reception of channels 7-13, reduce the length of the rods to12-18 inches. Location, Location, Location! For WFTC-TV, your antenna should be pointed towards Shoreview. The location of an indoor antenna is key. And one of the most popular spots for indoor antennas – on top of the TV – may not be the best. Consumers having trouble with digital TV reception should try moving their antennas to one of these locations: Near a window - As high as possible - Away from other electronic equipment, including computers, VCRs, DVD players, converter boxes, and the television itself. Change the direction the antenna is facing. Rooftop antennas may be needed in some instances. Consumers may need to run the “scan” function again on their converter boxes after moving the antenna. For more information about antennas and rescanning, visit www.DTV.gov. See the “Install a Converter Box” link for scanning tips. See the pages on Fixing Reception Problems and Troubleshooting Guide for antenna questions. Instructions posted on the DTV Reception Maps page show how to use the maps to choose an antenna. Also, see the DTV Made Easy Guide.

http://www.dtv.gov/video/vid_rescan.html