JUNE 2019 • FOGHORN 21 FOGHORNFOCUS: OPERATIONS Installation Even if an LED product meets all the requirements, and has all the necessary certifications, there is still a possibility for interference with VHF and AIS systems. This issue can most easily be avoided by installing both the LED fixtures and VHF and AIS antennae properly. If a powerful LED is installed too close to a VHF antenna, it can cause interference with the radio waves necessary to communicate. Because required separation distances vary greatly depending on the power of the LED fixture, the antenna or the radio communication device, be sure to consult the installa- tion manual for the manufacturer’s rec- ommendation on spacing of products. Similarly, if improper wire type or gauge is used, or the wires aren’t properly separated during installa- tion, there can be EMI with a VHF or AIS system if those wires run too close to antennae or signal cable, like a VHF coaxial cable. In the United States, the American Boat and Yacht Council (ABYC) rec- ommends the proper wire gauge for installing electronic circuits on a rec- reational vessel. Always be sure to meet or exceed these standards or have an ABYC-certified marine elec- trician perform the installation. It is also important to test the VHF and AIS systems that are installed in the proximity of LED lights to verify proper operational performance. For commercial vessels, the wiring must be up to the standard and regulations of the USCG. The main determining factor in the level electro-magnetic signals emitted by an LED fixture is the quality of the materials used by the manufacturer. For example, a light fixture with a thin plastic housing is more likely to cause EMI than a fixture that uses a robust metal housing for the LEDs. Thus, it is generally better to purchase lights from a reputable manufacturer of LED lighting specifically for marine use, than to find a low-cost alternative that may not be manufactured with con- sideration for EMI with VHF and AIS systems. n About the Author Holly Augustine is the Marketing Manager at IMTRA Corporation, a PVA Associate member located in New Bedford, MA. The European World Leader, proudly serving America's finest ! Reservations, Check-In, Port Automation, ePoS Reservations, Check-In, Port Automation, ePoS We care about your Customers Worldwide, we serve over 33 million passengers, 5 million vehicles and over a million cargo units annually. From whale watching to fine dining and from bay crossings to ocean voyages; Carus has the answer. www.carus.com The European World Leader,