Wikipedia
WHYY-TV, VHF digital channel 12, is the primary PBS member television station serving Philadelphia, Pennsylvania, United States that is licensed to Wilmington, Delaware. The station is owned by WHYY, Inc., and is a sister station to NPR member radio station WHYY-FM (90.9). The two stations maintain studio and office facilities on Independence Mall in Center City Philadelphia; WHYY-TV also operates a secondary studio in Wilmington; both stations share a transmitter located in the Roxborough section of Philadelphia.
WHYY-TV also operates a satellite station, WDPB (channel 64) in Seaford, Delaware, which serves the Delmarva Peninsula region. It is one of three PBS member stations serving the Philadelphia market, alongside WLVT-TV (channel 39) and NJTV (channels 23 and 52) as well as the other PBS member station serving the Salisbury market, alongside MPT (Channel 28).