[Code of Federal Regulations] [Title 47, Volume 4] [Revised as of October 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 47CFR73.49] [Page 20] TITLE 47--TELECOMMUNICATION COMMISSION (CONTINUED) PART 73_RADIO BROADCAST SERVICES--Table of Contents Subpart A_AM Broadcast Stations Sec. 73.49 AM transmission system fencing requirements. Antenna towers having radio frequency potential at the base (series fed, folded unipole, and insulated base antennas) must be enclosed within effective locked fences or other enclosures. Ready access must be provided to each antenna tower base for meter reading and maintenance purposes at all times. However, individual tower fences need not be installed if the towers are contained within a protective property fence. [51 FR 2707, Jan. 21, 1986]