WUSA CBS, and WJLA ABC in Washington DC are having problems
This is another case of both stations switching from UHF to the VHF frequencies:
WUSA CBS affiliate (Channel 9)
WJLA, the ABC affiliate (Channel 7)
Here's some highlights from today's Washington Post article,
Bill Lord, vice president of news at WJLA in Arlington, said the station has received more than 350 calls from viewers who are having reception problems since Friday's transition. It is holding an online chat at noon today on WJLA.com to answer questions. WUSA could not be reached for comment.
The Federal Communications Commission is looking into reports of lost stations in several markets, including Chicago and Philadelphia. In some cases, stations may have to increase power levels or add translators to extend the signal to more viewers. About 20 percent of the calls to the agency's DTV hotline were from viewers who had lost at least one station.
More than 480 stations across the country are now airing broadcasts on VHF stations, FCC spokesman Mark Wigfield said, and 216 stations were operating on those frequencies before the transition. WJLA, for example, was broadcasting its analog signal on Channel 7 and its digital station on Channel 39 before the transition. (Viewers should not have noticed the change.) When it turned off its analog signal, it moved its digital signal to the Channel 7 slot in the VHF band of frequencies.
As a result, some digital tuners and converter boxes are still trying to pick up programs on the old digital station. Wigfield suggests trying a "double rescan," which involves unplugging the antenna from the converter box or TV, rescanning, turning off the box or TV, then turning it back on, plugging the antenna back in and rescanning once more. The process should clear the tuner's memory so it can locate the digital frequency.
But it may not clear up all reception issues for consumers. After performing a "double rescan," LaRochelle said he was able to pick up Channels 7 and 9, but only at weak signal strength.