Care to share your grow light fix? I have a few neighbors that might be
interested in it.
If it involves opening the case, or doing much more than a common mode
choke I may not implement, as liability can be an issue if something
ever happens like a fire.
--
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 Wed, 2014-02-12 at 09:57 -0700, Tom Thompson wrote:
> This has been my experience here in Boulder, CO. In the past several
> years I have dealt with 3 halogen light power supplies, 9 grow light
> power supplies, one power line insulator, and one video camera power supply.
>
> I was able to talk one neighbor into replacing his 12 volt halogen
> system with a 120 volt system which solved the problem.
>
> I replaced the switching supply on another halogen system with a
> transformer and solved that problem.
>
> The third halogen system was a desk lamp and I placed a common mode
> choke on the lamp leads and solved that problem.
>
> A grower loaned me his kilowatt ballast and I was able to develop a lamp
> side filter that reduced the RFI by 30-dB. I applied that to five grow
> light systems and reduced the RFI to an acceptable level at my house.
> The other four growers moved away.
>
> The video camera power supply RFI was reduced to an acceptable level
> with a common mode choke.
>
> I built a LISN and determined that the grow light ballasts were
> violating part 18b specifications by 40-dB. I shared this technical
> information as well as the names of grow light ballast retailers and one
> ballast importer with the FCC Denver office to no avail. I had a two
> hour meeting with the engineers at the Denver office. Whereas they were
> sympathetic, nothing has happened from their office. One interesting
> point was that the meeting was ended because they had to track down a
> pirate radio station. We pointed out the irony of the concern for 10
> kHz of the broadcast spectrum over concern of many kHz of the HF spectrum.
>
> I, also, spoke with Laura Smith in the enforcement division. She said
> they were looking into tracking down some of the grow light ballast
> importers, but I don't think that is happening yet.
>
> I think the bottom line is that the FCC is under funded and under
> staffed and we amateurs are a low priority. Maybe a concerted letter
> writing to our congressional representatives is in order.
>
> Tom W0IVJ
>
> On 2/12/2014 8:39 AM, Kimberly Elmore wrote:
> > If no one complains, it's a sure bet nothing good will ever happen. Are we
> > at the top of the FCC's interest list? No, nor have we ever been. Yet, if
> > we don't squawk, who will? We need to log the problems with the FCC and
> > with the ARRL, who (like it or not) has a fair bit more clout with the FCC
> > than any one of us singly.
> >
> > My experience with the FCC field offices has always been good. If there's a
> > problem, call the closest office and ask to speak to a field engineer.
> > These guys are pretty bright and understand what we do.
> >
> > I honestly don't understand the attitude of "It's hopeless so don't
> > bother." That's a self-fulfilling prophecy if ever there was one.
> >
> > Kim N5OP
> >
> >
> > ________________________________
> > From: Dale J. <dj2001x@comcast.net>
> > To: Roger D Johnson <n1rj@roadrunner.com>
> > Cc: "rfi@contesting.com List" <rfi@contesting.com>
> > Sent: Wednesday, February 12, 2014 9:25 AM
> > Subject: Re: [RFI] LED Bulbs
> >
> >
> > Hi Roger,
> >
> > Now that statement I'll agree with. I will too.
> >
> > Even if I were to call the FCC to complain would I talk to a live human who
> > knows what I'm talking about or would it be a robot that directs me to a
> > FAQ on how to deal with RFI.
> >
> > 73
> > Dale, K9vuj
> >
> >
> > On 12, Feb 2014, at 8:12, Roger D Johnson <n1rj@roadrunner.com> wrote:
> >
> >> Unfortunately, interference to amateur radio appears to be VERY low
> >> on the FCC priorities list. I'll probably be an SK long before they
> >> act on my complaint!
> >>
> >> 73, Roger
> >>
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