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Potential interference of VHF-FM Radio and AIS Reception.
The U.S. Coast Guard has received reports from crews, ship owners, inspectors and other mariners regarding poor reception on VHF frequencies used for radiotelephone, digital selective calling (DSC) and automatic identification systems (AIS) when in the vicinity of light emitting diode (LED) lighting on-board ships (e.g., navigation lights, searchlights and floodlights, interior and exterior lights, adornment).
All boat owners using VHF marine radio and AIS should read this report.
READ THE FULL REPORT HERE: USCG safety alert 1318