47 C.F.R. § 73.6014 Protection of digital Class A TV stations.
Title 47 - Telecommunication
An application to change the facilities of an existing Class A TV station will not be accepted if it fails to protect authorized digital Class A TV stations and applications for changes in such stations filed prior to the date the Class A application is filed, pursuant to the requirements specified in §74.706 of this chapter.
Title 47: Telecommunication
PART 73—RADIO BROADCAST SERVICES
Subpart J—Class A Television Broadcast Stations
§ 73.6014 Protection of digital Class A TV stations.