47 C.F.R. § 73.6007
Power limitations
An application to change the facilities of an existing Class A TV station will not be accepted if it requests an effective radiated power that exceeds the power limitation specified in § 74.735 of this chapter.
An application to change the facilities of an existing Class A TV station will not be accepted if it requests an effective radiated power that exceeds the power limitation specified in § 74.735 of this chapter.