[Public-List] LEDs and interference
Stephen Gwyn
stephen.gwyn at gmail.com
Fri Aug 24 21:58:30 PDT 2018
Just noticed that the masthead LED not only infereres with the VHF (not
surprising, the antenna is right next to it) but also the AM/FM radio (more
surprising, the antenna is 40 feet away).
I'm now wondering if the interference is through the wires. I hope so.
Otherwise the interference would be there if your neighbor had a bad LED.
Conversely, my bad LED night be affecting my neighbor.
SG
SG
On Fri, Aug 24, 2018, 1:24 AM <public-list-request at lists.alberg30.org>
wrote:
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> Today's Topics:
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> 1. LED RFI (& TLA soup) (George Dinwiddie)
> 2. Re: Public-List Digest, Vol 3707, Issue 1 (Marcelo D. Gentinetta)
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>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 23 Aug 2018 15:29:21 -0400
> From: George Dinwiddie <gdinwiddie at alberg30.org>
> To: public-list at lists.alberg30.org
> Subject: [Public-List] LED RFI (& TLA soup)
> Message-ID: <456f4210-f3e5-a9ef-1da5-569bcc2aa63f at alberg30.org>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> On 8/23/18 3:09 PM, charles pleisse via Public-List wrote:
> > So are we talking about a little interference or damaging equipment? If
> > the former, just turn the darn light off for a minute.
>
> Low power, but who knows what you're affecting. You can hear it on the
> VHF, but what's it doing to your GPS?
>
> FCC part 15 testing has probably changed since I was last involved in
> the 80s, but often a quick fix to get through was to make cables an
> optional accessory so they didn't need to be connected while testing.
>
> - George
>
> --
> ----------------------------------------------------------------------
> When I remember bygone days George Dinwiddie
> I think how evening follows morn; gdinwiddie at alberg30.org
> So many I loved were not yet dead, http://www.Alberg30.org
> So many I love were not yet born. also see:
> 'The Middle' by Ogden Nash http://idiacomputing.com
> ----------------------------------------------------------------------
>
>
>
>
>
> ------------------------------
>
> Message: 2
> Date: Thu, 23 Aug 2018 14:30:31 -0500
> From: "Marcelo D. Gentinetta" <vanguard64 at cox.net>
> To: Alberg 30 Public List -- open to all
> <public-list at lists.alberg30.org>
> Subject: Re: [Public-List] Public-List Digest, Vol 3707, Issue 1
> Message-ID: <322C7AAD-1CD4-4B4E-9ECC-7E6D8A7A2E94 at cox.net>
> Content-Type: text/plain; charset=us-ascii
>
> I just came back from the boat and turned on my VHF together with all the
> LED cabin lights and the masthead LED tricolor/anchor lights. I did the
> squelch test as described in the CG article. I did not notice any
> difference in the set point of the squelch. I listened to transmissions
> over channel 16 and the weather channel and did not notice any change. I
> also monitored the AIS and did not notice any issues.
> My LED cabin lights are from Dr. LED and the masthead light is from
> Aqua-signal 34 series. I will keep monitoring the situation to see if
> anything changes.
> Marcelo
> #441
>
>
> > On Aug 23, 2018, at 2:09 PM, charles pleisse via Public-List <
> public-list at lists.alberg30.org> wrote:
> >
> > So are we talking about a little interference or damaging equipment? If
> > the former, just turn the darn light off for a minute.
> >
> >
> > Charles Pleisse
> > College Park Bicycles
> > ( <http://www.bike123.com>301)864-2211
> >
> > On Wed, Aug 22, 2018 at 4:04 PM, <public-list-request at lists.alberg30.org
> >
> > wrote:
> >
> >> Send Public-List mailing list submissions to
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> >> Please do NOT include the entire digest in your reply!
> >> ======================================================
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> >>
> >> Today's Topics:
> >>
> >> 1. Radio interference problems from marine LED lighting (Paul Wilson)
> >> 2. Re: Radio interference problems from marine LED lighting
> >> (Michael Grosh)
> >> 3. Re: Radio interference problems from marine LED lighting
> >> (Marcelo D. Gentinetta)
> >> 4. Re: Radio interference problems from marine LED lighting
> >> (Michael Connolly)
> >>
> >>
> >> ----------------------------------------------------------------------
> >>
> >> Message: 1
> >> Date: Tue, 21 Aug 2018 18:06:06 -0400
> >> From: Paul Wilson <dcmcrider at gmail.com>
> >> To: Alberg 30 Public List -- open to all
> >> <public-list at lists.alberg30.org>
> >> Subject: [Public-List] Radio interference problems from marine LED
> >> lighting
> >> Message-ID:
> >> <CAFfy=y1pzm1K21rUxJL-oAEbE_aCqoeqqb9yCJ_10HSiAPf2xw at mail.
> >> gmail.com>
> >> Content-Type: text/plain; charset="UTF-8"
> >>
> >> An interesting piece from the American Radio Relay League, quoting the
> >> Coast Guard. I'd be a little concerned about the masthead LEDs adjacent
> to
> >> the VHF antenna.
> >>
> >> LED lighting (as with any electronic device) is supposed to be
> certified as
> >> "Part 15" compliant for spurious emissions, per FCC regulations.
> >> ----------
> >> http://www.arrl.org/news/us-coast-guard-warns-of-led-
> >> lighting-interference-to-marine-radios-ais-reception
> >>
> >> Paul (KI4PW) Slainte #129
> >>
> >>
> >> ------------------------------
> >>
> >> Message: 2
> >> Date: Wed, 22 Aug 2018 08:06:35 -0400
> >> From: Michael Grosh <dickdurk at gmail.com>
> >> To: Alberg 30 Public List -- open to all
> >> <public-list at lists.alberg30.org>
> >> Subject: Re: [Public-List] Radio interference problems from marine LED
> >> lighting
> >> Message-ID:
> >> <CAO99GuFMmZhz1rtm2gEeYJzj-gVkyk2Wv7F5f_B+qvRGyF6kcw@
> >> mail.gmail.com>
> >> Content-Type: text/plain; charset="UTF-8"
> >>
> >> So the electromagnetic expert engineer recommends try before you buy.
> Try
> >> what? How?
> >> Looks like to make that happen you have to carry a vhf rig into the
> store,
> >> wire up the bulb you are interested in, and play with the squelch
> >> (mentioned further in the article).
> >> I'm not seeing that as a viable approach.
> >> Michael Grosh
> >> #220
> >>
> >> On Aug 21, 2018 9:44 PM, "Paul Wilson via Public-List" <
> >> public-list at lists.alberg30.org> wrote:
> >>
> >> An interesting piece from the American Radio Relay League, quoting the
> >> Coast Guard. I'd be a little concerned about the masthead LEDs adjacent
> to
> >> the VHF antenna.
> >>
> >> LED lighting (as with any electronic device) is supposed to be
> certified as
> >> "Part 15" compliant for spurious emissions, per FCC regulations.
> >> ----------
> >> http://www.arrl.org/news/us-coast-guard-warns-of-led-
> >> lighting-interference-to-marine-radios-ais-reception
> >>
> >> Paul (KI4PW) Slainte #129
> >> _______________________________________________
> >> These businesses support your Association:
> >> http://www.alberg30.org/store/A30supporters.html
> >> Please support them.
> >> _______________________________________________
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> >> Public-List at lists.alberg30.org
> >> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
> >>
> >>
> >> ------------------------------
> >>
> >> Message: 3
> >> Date: Wed, 22 Aug 2018 07:14:08 -0500
> >> From: "Marcelo D. Gentinetta" <vanguard64 at cox.net>
> >> To: Alberg 30 Public List -- open to all
> >> <public-list at lists.alberg30.org>
> >> Subject: Re: [Public-List] Radio interference problems from marine LED
> >> lighting
> >> Message-ID: <0D1803FC-6B9F-4AD5-97F7-DFFBFB8949A3 at cox.net>
> >> Content-Type: text/plain; charset=utf-8
> >>
> >> Well,
> >> I just finished rewiring the boat and adding all new interior LED lights
> >> including an LED tricolor/anchor light next to the VHF antenna at the
> >> masthead. I also installed a new VHF/AIS radio. Yikes! I will have to do
> >> the squelch test they describe in the article and see what happens.
> >> Marcelo
> >> #441 Alegr?a
> >>
> >>> On Aug 22, 2018, at 7:06 AM, Michael Grosh via Public-List <
> >> public-list at lists.alberg30.org> wrote:
> >>>
> >>> So the electromagnetic expert engineer recommends try before you buy.
> >> Try
> >>> what? How?
> >>> Looks like to make that happen you have to carry a vhf rig into the
> >> store,
> >>> wire up the bulb you are interested in, and play with the squelch
> >>> (mentioned further in the article).
> >>> I'm not seeing that as a viable approach.
> >>> Michael Grosh
> >>> #220
> >>>
> >>> On Aug 21, 2018 9:44 PM, "Paul Wilson via Public-List" <
> >>> public-list at lists.alberg30.org> wrote:
> >>>
> >>> An interesting piece from the American Radio Relay League, quoting the
> >>> Coast Guard. I'd be a little concerned about the masthead LEDs adjacent
> >> to
> >>> the VHF antenna.
> >>>
> >>> LED lighting (as with any electronic device) is supposed to be
> certified
> >> as
> >>> "Part 15" compliant for spurious emissions, per FCC regulations.
> >>> ----------
> >>> http://www.arrl.org/news/us-coast-guard-warns-of-led-
> >> lighting-interference-to-marine-radios-ais-reception
> >>>
> >>> Paul (KI4PW) Slainte #129
> >>> _______________________________________________
> >>> These businesses support your Association:
> >>> http://www.alberg30.org/store/A30supporters.html
> >>> Please support them.
> >>> _______________________________________________
> >>> Public-List mailing list
> >>> Public-List at lists.alberg30.org
> >>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
> >>> _______________________________________________
> >>> These businesses support your Association:
> >>> http://www.alberg30.org/store/A30supporters.html
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> >>> Public-List at lists.alberg30.org
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> >>
> >>
> >>
> >> ------------------------------
> >>
> >> Message: 4
> >> Date: Wed, 22 Aug 2018 09:03:38 -0400 (EDT)
> >> From: Michael Connolly <crufone at comcast.net>
> >> To: Alberg 30 Public List -- open to all
> >> <public-list at lists.alberg30.org>
> >> Subject: Re: [Public-List] Radio interference problems from marine LED
> >> lighting
> >> Message-ID: <340004311.236682.1534943018582 at connect.xfinity.com>
> >> Content-Type: text/plain; charset=UTF-8
> >>
> >> Let us know your results
> >>
> >>> On August 22, 2018 at 8:14 AM "Marcelo D. Gentinetta via Public-List" <
> >> public-list at lists.alberg30.org> wrote:
> >>>
> >>>
> >>> Well,
> >>> I just finished rewiring the boat and adding all new interior LED
> lights
> >> including an LED tricolor/anchor light next to the VHF antenna at the
> >> masthead. I also installed a new VHF/AIS radio. Yikes! I will have to do
> >> the squelch test they describe in the article and see what happens.
> >>> Marcelo
> >>> #441 Alegr?a
> >>>
> >>>> On Aug 22, 2018, at 7:06 AM, Michael Grosh via Public-List <
> >> public-list at lists.alberg30.org> wrote:
> >>>>
> >>>> So the electromagnetic expert engineer recommends try before you buy.
> >> Try
> >>>> what? How?
> >>>> Looks like to make that happen you have to carry a vhf rig into the
> >> store,
> >>>> wire up the bulb you are interested in, and play with the squelch
> >>>> (mentioned further in the article).
> >>>> I'm not seeing that as a viable approach.
> >>>> Michael Grosh
> >>>> #220
> >>>>
> >>>> On Aug 21, 2018 9:44 PM, "Paul Wilson via Public-List" <
> >>>> public-list at lists.alberg30.org> wrote:
> >>>>
> >>>> An interesting piece from the American Radio Relay League, quoting the
> >>>> Coast Guard. I'd be a little concerned about the masthead LEDs
> >> adjacent to
> >>>> the VHF antenna.
> >>>>
> >>>> LED lighting (as with any electronic device) is supposed to be
> >> certified as
> >>>> "Part 15" compliant for spurious emissions, per FCC regulations.
> >>>> ----------
> >>>> http://www.arrl.org/news/us-coast-guard-warns-of-led-
> >> lighting-interference-to-marine-radios-ais-reception
> >>>>
> >>>> Paul (KI4PW) Slainte #129
> >>>> _______________________________________________
> >>>> These businesses support your Association:
> >>>> http://www.alberg30.org/store/A30supporters.html
> >>>> Please support them.
> >>>> _______________________________________________
> >>>> Public-List mailing list
> >>>> Public-List at lists.alberg30.org
> >>>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
> >>>> _______________________________________________
> >>>> These businesses support your Association:
> >>>> http://www.alberg30.org/store/A30supporters.html
> >>>> Please support them.
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> >>>> Public-List mailing list
> >>>> Public-List at lists.alberg30.org
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> >>>
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> >>> These businesses support your Association:
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> >>
> >>
> >> ------------------------------
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> >> Subject: Digest Footer
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> >> End of Public-List Digest, Vol 3707, Issue 1
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