[Code of Federal Regulations] [Title 47, Volume 5] [Revised as of October 1, 2005] From the U.S. Government Printing Office via GPO Access [CITE: 47CFR80.81] [Page 30] TITLE 47--TELECOMMUNICATION COMMISSION (CONTINUED) PART 80_STATIONS IN THE MARITIME SERVICES--Table of Contents Subpart C_Operating Requirements and Procedures Sec. 80.81 Antenna requirements for ship stations. All telephony emissions of a ship station or a marine utility station on board ship within the frequency band 30-200 MHz must be vertically polarized.