{"data":{"id":"us/47-cfr-80.393","jurisdiction":"us","citation":"47 CFR 80.393","heading":"Frequencies for AIS stations.","body":"Automatic Identification Systems (AIS) are a maritime broadcast service. The simplex channels at 156.775 MHz (AIS 3), 156.825 MHz (AIS 4), 161.975 MHz (AIS 1), and 162.025 MHz (AIS 2), each with a 25 kHz bandwidth, may be authorized only for AIS. In accordance with the Maritime Transportation Security Act, the United States Coast Guard regulates AIS carriage requirements for non-Federal Government ships. These requirements are codified at 33 CFR 164.46, 401.20.","path":["Title 47—Telecommunication","CHAPTER I—FEDERAL COMMUNICATIONS COMMISSION","SUBCHAPTER D—SAFETY AND SPECIAL RADIO SERVICES","PART 80—STATIONS IN THE MARITIME SERVICES","Subpart H—Frequencies"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-47.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:28Z","sha256":"2c93415fdfc3ececab4dfc42349e08a905389773e89374fe37c409981c24cf62","source_id":"us-cfr","stale":true,"prev":"us/47-cfr-80.389","next":"us/47-cfr-80.401"},"notice":"GroundRules: Original legal text. Not legal advice."}