C.F.R. » Title 47 » CHAPTER I—FEDERAL COMMUNICATIONS COMMISSION › SUBCHAPTER D—SAFETY AND SPECIAL RADIO SERVICES › PART 80—STATIONS IN THE MARITIME SERVICES › Subpart C—Operating Requirements and Procedures

47 C.F.R. § 80.81

Antenna requirements for ship stations

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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.