September 11, 2018
With their low battery draw, cooler operation and sturdy construction, LED lights have been popular with recreational boaters. The lights may also be causing poor VHF radio and Automatic Identification System (AIS) reception, according to a Marine Safety Alert issued by the U.S. Coast Guard on August 15. The BoatUS Foundation for Boating Safety and Clean Water is urging boat owners to follow the Coast Guard’s simple test procedures for LED interference and report any instances to the Coast Guard Navigation Center.
The alert, issued for informational purposes, outlines reports received from mariners concerning radio frequency interference caused by LED lamps that “were found to create potential safety hazards.” In some cases, the Coast Guard says, the interference may cause problems if mariners need to call for help. The interference can affect VHF voice communications as well as Digital Selective Calling (DSC) messages, and it may also affect AIS because they also use VHF radio. In particular, masthead LED navigation lights on sailboats may cause problems due to their close proximity to antennas.
The Coast Guard advises that it is possible to test for the presence of LED interference by using the following procedures:
- Turn off LED light(s).
- Tune the VHF radio to a quiet channel (for example, channel 13).
- Adjust the VHF radio's squelch control until the radio outputs audio noise.
- Re-adjust the VHF radio's squelch control until the audio noise is quiet, only slightly above the noise threshold.
- Turn on the LED light(s).
If the radio now outputs audio noise, then the LED lights are causing interference and it is likely that both shipboard VHF marine radio and AIS reception are being degraded by LED lighting. Potential solutions include contacting an electronics repair facility to address the problem, changing the LED bulb to incandescent bulb or fixture, or increasing the separation between the LED light and antenna.
The Coast Guard also requests those experiencing this problem to report their experiences to the Coast Guard Navigation Center by selecting “Maritime Telecommunications” on the subject drop-down list, then briefly describing the make and model of LED lighting and radios affected, the distance from lighting to any antennas and radios affected, and any other information that may help them understand the scope of the problem.
If you’d like to learn more about VHF DSC radio or AIS operation, BoatUS Foundation has online courses and a free DSC VHF tutorial at BoatUS.org.
Marine Industry Career Path: Brett Ramsey
Wendy and Brett Ramsey
Boating Industry Canada is kicking off its Marine Industry Career Path series once again. For the first installments this year, we have two subjects to highlight. Introducing Wendy and Brett Ramsey!
The Ramsey’s have been working in the marine industry for many years but have both had unique paths in getting to where they are now. They’ve also been working on an impactful pilot project for a long time, which will now be launching this spring. The focus of this initiative is to bring more young people into the marine industry.
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Building on its award-winning M Series, Bayliner unveiled the all-new M19 at the Miami International Boat Show. The M19 joins the M Series lineup of the M15 and M17 delivering the stability and versatility the series is known for with a focus on expanding boater participation through its intuitive design, ease of maintenance and inclusive price point.
With an overall length of 19 feet and starting at $30,995 USD, the M19 is built on an improved M-hull foundation offering increased stability and automotive style handling for familiarity to appeal to the next generation of boaters. The M19 features an upgraded nine-person capacity and is watersports capable for a full day of adventure on the water.
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Televisions on a boat are increasingly commonplace. With the simple-to-install Glomex Avior VT300 Omnidirectional TV/FM antenna from GA Communications, it's never been easier to bring analog and digital broadcasts onboard—at a price that's hard to ignore.
The most noticeable feature of the Avior VT300 antenna is its compact white, anti-yellowing radome. At only 4" dia. x 8" H and 8.8 oz., it's specifically made for smaller boats that can't accommodate large TV antenna domes and only need short range reception, depending on height and conditions. The amplifier allows the antenna to have an increase in gain with a 24.5 dB average to receive vertical and horizontal polarized TV signals simultaneously from 360°.
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Airmar hires Suzanne Hawley as Brand Manager
The Leader in Ultrasonic Technology and Multi-sensor Solutions Continues to Grow in Talent and Innovation. AIRMAR® Technology Corporation, a world leader in ultrasonic transducers and Chirp technology, has named Suzanne Hawley as the Brand Manager for the company’s wholly owned distributor, Gemeco Marine Electronics Specialists, located in Lake City, SC.
Hawley comes to Airmar with extensive marketing and PR experience in the marine electronics industry including 20 years as the owner of Hawley Communications, a consulting agency focused on creative marketing solutions for businesses in the recreational boating industry.
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