{"data":{"id":"us/47-cfr-80.217","jurisdiction":"us","citation":"47 CFR 80.217","heading":"Suppression of interference aboard ships.","body":"(a) A voluntarily equipped ship station receiver must not cause harmful interference to any receiver required by statute or treaty.\n(b) The electromagnetic field from receivers required by statute or treaty must not exceed the following value at a distance over sea water of one nautical mile from the receiver:\nFrequency of interfering emissions Field intensity in microvolts per meter\nBelow 30 MHz 0.1\n30 to 100 MHz .3\n100 to 300 MHz 1.0\nOver 300 MHz 3.0\nor\nDeliver not more than the following amounts of power, to an artificial antenna having electrical characteristics equivalent to those of the average receiving antenna(s) use on shipboard:\nFrequency of interfering emissions Power to artificial antenna in microwatts\nBelow 30 MHz 400\n30 to 100 MHz 4,000\n100 to 300 MHz 40,000\nOver 300 MHz 400,000","path":["Title 47—Telecommunication","CHAPTER I—FEDERAL COMMUNICATIONS COMMISSION","SUBCHAPTER D—SAFETY AND SPECIAL RADIO SERVICES","PART 80—STATIONS IN THE MARITIME SERVICES","Subpart E—General Technical Standards"],"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":"848303b1dffb0fa6a63526064a95b6cfbb79f4aa878af4c19570483e2c141fb7","source_id":"us-cfr","stale":true,"prev":"us/47-cfr-80.215","next":"us/47-cfr-80.219"},"notice":"GroundRules: Original legal text. Not legal advice."}