According to "Promoting Interoperability in the 700 MHz Commercial Spectrum" FCC order "Lower 700 MHz band A Block licensees must provide interference protection to existing U.S. full power DTV and Class A stations operating in the adjacent Channel 51 by maintaining a minimum distance separation (from base station to TV transmitter) of as much as 108 km (67 miles). Further, Section 27.60 specifies a minimum distance separation of 96.5 km (60 miles) between mobile units operating on the A Block adjacent to Channel 51 broadcast stations." 

However "700 MHz band licensees are also permitted to demonstrate compliance with TV/DTV protection requirements through the following alternative means: (i) calculating geographic separations in accordance with the required designed signal-to-undesired signal ratios when station parameters are greater than those indicated in the table; (ii) submit an engineering study justifying the proposed separations based on the parameters of the land mobile station and the TV/DTV station; or (iii) obtain written concurrence from the applicable TV/DTV station."

By default the exclusion zones are 60-miles radius circles around all stations but since T-Mobile can ask to reduce the circles closer to the station service contours I didn't bother to display the circles. As of April 2015 T-Mobile filed only one application to establish a defined exclusion zone. It is for WIWU-CD (Marion, IN). The exclusion zone includes the station service area and a five miles wide buffer zone. The final radius of the exclusion zone is approximately 26.5 miles.