KCTA still comes in like a local in Downtown Houston.
You have an unusually high estimation for weak signals.
A "local" signal today is at least 5 mV/m. In dense, noisy metros like Houston, about 10 mV/m or more is needed to overcome man-made interference.
The 5 mV/m signal for KCTA barely covers half of Matagorda County; it does not touch Barazoria, Wharton or Fort Bend counties at all. Even the 2 mV/m signal does not hit Ft. Bend County, although it does touch a small part of SW Brazoria County.
