{"data":{"id":"us/47-cfr-80.771","jurisdiction":"us","citation":"47 CFR 80.771","heading":"Method of computing coverage.","body":"Compute the + 17 dBu contour as follows:\n(a) Determine the effective antenna height above mean sea level according to the procedures in §§ 80.757-80.761.\n(b) Determine the effective radiated power according to § 80,765. Determine for each radial the distance from the antenna site to the + 17 dBu point of field strength using procedures of §§ 80.765 and 80.767.\n(c) Plot on a suitable map each point of + 17 dBu field strength for all radials and draw the contour by connecting the adjacent points by a smooth curve.","path":["Title 47—Telecommunication","CHAPTER I—FEDERAL COMMUNICATIONS COMMISSION","SUBCHAPTER D—SAFETY AND SPECIAL RADIO SERVICES","PART 80—STATIONS IN THE MARITIME SERVICES","Subpart P—Standards for Computing Public Coast Station VHF Coverage"],"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":"b86d4c70df1ad7450ba38153137d6496a521608b9e4f80954f077d9bd297b3d1","source_id":"us-cfr","stale":true,"prev":"us/47-cfr-80.769","next":"us/47-cfr-80.773"},"notice":"GroundRules: Original legal text. Not legal advice."}