{"data":{"id":"us/47-cfr-73.311","jurisdiction":"us","citation":"47 CFR 73.311","heading":"Field strength contours.","body":"(a) Applications for FM broadcast authorizations must show the field strength contours required by FCC Form 2100, Schedule 301 or 340, as appropriate.\n(b) The field strength contours provided for in this section shall be considered for the following purposes only:\n(1) In the estimation of coverage resulting from the selection of a particular transmitter site by an applicant for an FM broadcast station.\n(2) In connection with problems of coverage arising out of application of § 73.3555.\n(3) In determining compliance with § 73.315(a) concerning the minimum field strength to be provided over the principal community to be served.\n(4) In determining compliance with § 73.215 concerning contour protection.","path":["Title 47—Telecommunication","CHAPTER I—FEDERAL COMMUNICATIONS COMMISSION","SUBCHAPTER C—BROADCAST RADIO SERVICES","PART 73—RADIO BROADCAST SERVICES","Subpart B—FM Broadcast Stations"],"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":"5da985e5f70b23083560fc393bfbf7b787c88a5ff542ef666e3a86814b1ca42c","source_id":"us-cfr","stale":true,"prev":"us/47-cfr-73.310","next":"us/47-cfr-73.312"},"notice":"GroundRules: Original legal text. Not legal advice."}