[Code of Federal Regulations] [Title 47, Volume 5] [Revised as of October 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 47CFR90.305] [Page 392] TITLE 47--TELECOMMUNICATION CHAPTER I--FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) PART 90_PRIVATE LAND MOBILE RADIO SERVICES--Table of Contents Subpart L_Authorization in the Band 470-512 MHz (UHF-TV Sharing) Sec. 90.305 Location of stations. (a) The transmitter site(s) for base station(s), including mobile relay stations, shall be located not more than 80 km. (50 mi.) from the geographic center of the urbanized area listed in Sec. 90.303. (b) Mobile units shall be operated within 48 km. (30 mi.) of their associated base station or stations. Such units may not be operated aboard aircraft in flight except as provided for in Sec. 90.315(i). (c) Control stations must be located within the area of operation of the mobile units. (d) Base and control stations shall be located a minimum of 1.6 km. (1 mi.) from local television stations operating on UHF TV channels separated by 2, 3, 4, 5, 7, and 8 TV channels from the television channel in which the base station will operate.