My tricolor and anchor masthead combo light is from Marine Beam. I’ve never noticed an issue and have used my VHF pretty extensively at night while the tricolor was on.
Something to keep in mind for sure though. Thanks for the notice. Kevin Benoit S/V Guru ‘76 MKII 36 On Tue, Aug 21, 2018 at 11:59 AM Dreuge via CnC-List <cnc-list@cnc-list.com> wrote: > I was just about to send out a similar email. Below is a link to a > Passagemaker.com article regarding “Potential LED Interference With VHF, > DSC, and AIS Communications “. In short, the main issue are LEDs in > proximity to antennas. > > In my case, I have a mast head antenna and a LED anchor bulb. I have not > noticed any issues, but then I don’t usually have the VHF and the anchor > light on simultaneously. But the test they outline seems simple, so why > not test all LEDs. > > 1. Turn off LED lights > 2. Tune VHF radio to a quiet channel (USCG gives Ch 13 as an example, > though this may not be the best channel in all waterways) > 3. Adjust the VHF radio's squelch control until the radio outputs audio > noise. > 4. Re-adjust the VHF radio’s squelch control until the audio noise is > quiet, only slightly above the noise threshold. > 5. Turn on the LED light(s), do this for each circuit/type of lights > (spotlight, navigation lights, deck lights, interior lights (by area of the > boat). > 1.If the radio now outputs audio noise, then the LEDs have raised the > noise floor. (Noise floor is generally the amount of interfering signals / > static received beyond the specific signal or channel being monitored.) > 2. If the radio does not output audio noise, then LEDs have not raised the > noise floor. > > > > https://www.passagemaker.com/trawler-news/led-vhf-interference?utm_source=passagemaker-enewsletter&utm_medium=email&utm_content=morelink&utm_campaign=enewsletter-082118 > > - > Paul E. > 1981 C&C Landfall 38 > S/V Johanna Rose > Fort Walton Beach, FL > > http://svjohannarose.blogspot.com/ > > On Aug 21, 2018, at 12:00 PM, cnc-list-requ...@cnc-list.com wrote: > > Date: Tue, 21 Aug 2018 11:58:12 -0400 > From: "Bill Coleman" <colt...@verizon.net> > To: <cnc-list@cnc-list.com> > Subject: Stus-List USCG Notification of LED Interference > Message-ID: <450f01d43967$c3ce29f0$4b6a7dd0$@net> > Content-Type: text/plain; charset="utf-8" > > > > Maybe these LED's are the cheap EBay kind, I checked MarineBeam site, and > hopefully they have this handled. > > > > The Great Lakes Cruising Club sent out notification of this potential > issue today.? The USCG bulletin can be accessed at the following site- > > > https://www.dco.uscg.mil/Portals/9/DCO%20Documents/5p/CG-5PC/INV/Alerts/1318.pdf?ver=2018-08-16-091109-630 > > > > > https://store.marinebeam.com/controlling-emi-1/ > > I have heard that Fluorescent bulbs are one of the worst line polluters. > > > Bill Coleman > C&C 39 Erie, PA > > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > -- Kevin Benoit 225-205-2373 Sent from My IPhone
_______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
