Any provision of this part that is in conflict with the Communications Act of 1934, as amended, (47 U.S.C. Sec. 332(c)(3)) shall not apply to commercial mobile radio service to the extent of that conflict. If any provision contained in this part applicable to commercial mobile radio service, or the application thereof to any person or circumstance, is invalid as a result of federal preemption, the remainder of this part, or the application of the provision to other persons or circumstances, shall not be affected thereby.