I also listened at VHF (2M), and heard nothing...
--
Thanks and 73's,
For equipment, and software setups and reviews see:
www.nk7z.net
For MixW support see;
http://groups.yahoo.com/neo/groups/mixw/info
For Dopplergram information see:
http://groups.yahoo.com/neo/groups/dopplergram/info
For MM-SSTV see:
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On Mon, 2015-07-27 at 16:59 +0000, Hare, Ed W1RFI wrote:
> Great. I also have a ham who works in the electric-utility industry sending
> me one to test. They will not all be made by one company, but this is a very
> encouraging sign. The LED bulb is NOT an RF-driven bulb, or one that
> ionizes gas, so it would comply with Part 15. The FCC would almost certainly
> consider the street poles to be industrial environments, as they did with BPL
> on overhead lines, so the rather high Part 15A limits would apply. If this is
> inaudible, then the bulbs are clearly WAY below the FCC limits.
>
> Thank goodness!
>
> Ed Hare, W1RFI
> ARRL Laboratory Manager
> 225 Main St.
> Newington, CT 06111
> Tel: (860) 594-0318
> Fax: (860) 594-0259
> Email: W1RFI@arrl.org
> Member: IEEE Connecticut Section
> Member: IEEE EMC Society, Board of Directors
> Member: IEEE EMC Society Standards Development and Education Committee
> Primary representative: ANSI ASC C63 EMC Committee, Vice Chair Subcommittee
> 5 (Immunity)
> Member: QRP Amateur Radio Club International, Board of Directors
>
>
>
> -----Original Message-----
> From: RFI [mailto:rfi-bounces@contesting.com] On Behalf Of David Cole
> Sent: Monday, July 27, 2015 12:55 PM
> To: rfi@contesting.com
> Subject: Re: [RFI] LED lighting
>
> Hi Ed,
>
> I discovered that the City here is going to be switching to LED streetlights
> soon, and ended up in contact with the City Engineer...
>
> The long and short of it is that the city had not even thought about Part
> 15/18 compliance, but when they looked, the lights were compliant as per the
> data sheet on them.
>
> He and agreed to have us look over the test run they have in place looking
> for RFI... He gave us the addresses and we we did-- all of them were dead
> quiet on 80-10 Meters, regarding broadband noise, in a drive around test...
>
> We did a prelight drive around, mapping all the poles by number and taking RF
> background readings, on 80-10, then waited for them to light, and did it
> again... Not one light made any detectable RFI, at street level. Not
> scientific, and I told him that, but at least the city is being really good
> about RFI, and it is now on their radar.
>
>
> --
> Thanks and 73's,
> For equipment, and software setups and reviews see:
> www.nk7z.net
>
> For MixW support see;
> http://groups.yahoo.com/neo/groups/mixw/info
> For Dopplergram information see:
> http://groups.yahoo.com/neo/groups/dopplergram/info
> For MM-SSTV see:
> http://groups.yahoo.com/neo/groups/MM-SSTV/info
>
>
> On Mon, 2015-07-27 at 15:04 +0000, Hare, Ed W1RFI wrote:
> > I bought one multi-LED bulb that came from China. It was dead quiet. My
> > guess is that it simply put the LEDs in series and connected them to the
> > line. Not all of them will have a switcher in them.
> >
> > ARRL tested a number and found them to be below the conducted emissions
> > limits. I want to test them above 30 MHz too, for radiated emissions,
> > though we'd need to set up outdoors to prevent scatters from throwing off
> > the readings.
> >
> >
> > Ed Hare, W1RFI
> > ARRL Laboratory Manager
> > 225 Main St.
> > Newington, CT 06111
> > Tel: (860) 594-0318
> > Fax: (860) 594-0259
> > Email: W1RFI@arrl.org
> > Member: IEEE Connecticut Section
> > Member: IEEE EMC Society, Board of Directors
> > Member: IEEE EMC Society Standards Development and Education Committee
> > Primary representative: ANSI ASC C63 EMC Committee, Vice Chair
> > Subcommittee 5 (Immunity)
> > Member: QRP Amateur Radio Club International, Board of Directors
> >
> >
> >
> > -----Original Message-----
> > From: RFI [mailto:rfi-bounces@contesting.com] On Behalf Of David
> > Robbins
> > Sent: Sunday, July 26, 2015 11:37 AM
> > To: 'Phil Snyder'; rfi@contesting.com
> > Subject: Re: [RFI] LED lighting
> >
> > They could just be led bulbs in a standard 120v socket also... in those
> > there is a switching supply in the base of each bulb.
> >
> > David Robbins K1TTT
> > e-mail: mailto:k1ttt@arrl.net
> > web: http://wiki.k1ttt.net
> > AR-Cluster node: 145.69MHz or telnet://k1ttt.net
> >
> >
> > -----Original Message-----
> > From: RFI [mailto:rfi-bounces@contesting.com] On Behalf Of Phil Snyder
> > Sent: Sunday, July 26, 2015 14:51
> > To: rfi@contesting.com
> > Subject: [RFI] LED lighting
> >
> > Well after a 4 year period the local electric company found the offending
> > lightning arrester and voila no more noise! Unfortunately, the neighbor
> > behind me just remodeled the outside of their house and in the process
> > added about 6 LED lighting fixtures in the soffit across the front and
> > after a few days of watching and listening it appears that they are causing
> > way more RFI then the faulty arrester ever did.
> >
> > I am hoping to learn a little more here before approaching them to make
> > sure all my facts are straight. I am assuming that there is a switching
> > power supply running the lights and that the power is cut to the supply
> > when they are not on since the noise is gone when they are off. Is it
> > possible to try and suppress the noise on the leads coming out of the power
> > supply? Does he need to contact the manufacturer to replace the supply?
> > Unfortunately they are mounted into the soffit like a can type light you
> > would have inside your house and I hope the power supply is accessible.
> >
> > Thanks
> > Phil
> > N9LAH
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