{"data":{"id":"us/47-cfr-78.111","jurisdiction":"us","citation":"47 CFR 78.111","heading":"Frequency tolerance.","body":"Stations in this service shall maintain the carrier frequency of each authorized transmitter to within the following percentage of the assigned frequency.\nFrequency band (MHz) Frequency tolerance\nFixed (percent) Mobile (percent)\n1,990 to 2,110 0.005\n6,425 to 6,525 0.005\n6,875 to 7,125 0.005\n12,700 to 13,250 1 0.005 0.005\n17,700 to 18,820 0.003\n18,820 to 18,920 0.001\n18,920 to 19,700 0.003\n1 Stations that employing vestigal sideband AM transmissions shall maintain their operating frequency within 0.0005% the visual carrier, and the aural carrier shall be 4.5 MHz ±1 kHz above the visual carrier frequency.","path":["Title 47—Telecommunication","CHAPTER I—FEDERAL COMMUNICATIONS COMMISSION","SUBCHAPTER C—BROADCAST RADIO SERVICES","PART 78—CABLE TELEVISION RELAY SERVICE","Subpart D—Technical Regulations"],"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":"b566d67a3a46600059aeb486658b2c357e0f7b936c640536aa46f2dd90b0bc66","source_id":"us-cfr","stale":true,"prev":"us/47-cfr-78.109","next":"us/47-cfr-78.113"},"notice":"GroundRules: Original legal text. Not legal advice."}