Dear Group,
If anyone else is interested in this contact me directly, off list.
We can stay if the body thinks this merits the bandwidth on the list, but
sometimes the culture of Yahoo groups demands things be QSY'ed.
..--..
Scott
Sent via the Samsung Galaxy Note® II, an AT&T 4G LTE smartphone
<div>-------- Original message --------</div><div>From: Tom Thompson
<w0ivj@tomthompson.com> </div><div>Date:12/02/2016 10:53 PM (GMT-05:00)
</div><div>To: nm8rmedic <nm8rmedic@rocketmail.com>, jim@audiosystemsgroup.com,
rfi@contesting.com </div><div>Subject: Re: [RFI] Grow light RFI </div><div>
</div>Scott,
Does your ordinance apply just to marijuana grow light ballasts?
Tom
On 12/2/2016 2:57 PM, nm8rmedic via RFI wrote:
> Jim,
>
> Actually we are well beyond the formative period for this ordinance. It has
> been in place for about a year-and-a-half.
>
> I did request advice from ARRL before I wrote the ordinance. Their's was
> basically: don't do it. But we did not find inaction acceptable. I had our
> attorneys vett it and it actually has held up quite well and already been
> successful in mitigating an RFI problem caused by a formerly illegal grow
> operation that sought licensing. The FCC was a participant in that process.
>
> And we continue to invoke the ordinance, which includes both Part 15 and Part
> 18 compliance, with any potential new grow operations.
>
> So it has already mitigated one, and with newly passed legislation here
> legalizing grow operations, it is preventing future problems. What's not to
> like about that?
>
> Don't get too worried guys. We don't enforce the FCC regulations, nor do we
> add to them, we merely require that they be met.
>
> We decided to act boldly and take chances, otherwise it is a certainty that
> we're going to live in an RFI polluted world.
>
>
> Scott
>
>
>
>
> Sent via the Samsung Galaxy Note® II, an AT&T 4G LTE smartphone
>
>
>
>
>
>
>
>
>
>
>
>
>
> <div>-------- Original message --------</div><div>From: Jim Brown
> <jim@audiosystemsgroup.com> </div><div>Date:12/02/2016 12:47 PM (GMT-05:00)
> </div><div>To: rfi@contesting.com </div><div>Subject: Re: [RFI] Grow light
> RFI </div><div>
> </div>Hi Scott,
>
> I suggest that you get advice from ARRL and W1RFI on the wording of your
> ordinance. I suspect that they will advise you to avoid suggesting any
> specific products, and also that they will advise you to require
> compliance with Part 15 Class B for residential use. Or it may be that
> these products fall within Part 18.
>
> 73, Jim K9YC
>
> On Fri,12/2/2016 5:30 AM, nm8rmedic via RFI wrote:
>> Ed,
>>
>> Understood, and thank you. The metodology is not my question, though.
>>
>> I still ask: what was the lowest frequency swept? I infer from the tiny
>> graph it was around 300 khz, but did not catch any numerical data at that
>> point or outside of the points you mention.
>>
>> I ask b/c as a city manager we adopted an ordinance regulating marijauna
>> grow operations and included a provision of local license approval based
>> upon also meeting FCC regulations regarding RFI emissions. We recommend an
>> outboard filter for noisy ballasts, but I would like to also be able to make
>> a recommendation for an effective and clean ballast from LF to VHF.
>>
>> Is this the one?
>>
>> Scott
>>
>>
>>
>> Scott
>>
>>
>> Sent via the Samsung Galaxy Note® II, an AT&T 4G LTE smartphone
>>
>>
>>
>> <div>-------- Original message --------</div><div>From: "Hare, Ed W1RFI"
>> <w1rfi@arrl.org> </div><div>Date:12/01/2016 4:14 PM (GMT-05:00)
>> </div><div>To: nm8rmedic <nm8rmedic@rocketmail.com>, Tom Thompson
>> <w0ivj@tomthompson.com> </div><div>Subject: RE: [RFI] Grow light RFI
>> </div><div>
>> </div>It looks like they swept the entire frequency range with a spectrum
>> analyzer in peak-detection mode, obtained the 6 highest values and
>> frequency, then went back and measured just those frequencies in quasi peak
>> detector mode. This is a common test practice.
>>
>> Ed, W1RFI
>>
>>
>>
>> -----Original Message-----
>> From: RFI [mailto:rfi-bounces@contesting.com] On Behalf Of nm8rmedic via RFI
>> Sent: Thursday, December 01, 2016 4:09 PM
>> To: Tom Thompson; rfi@contesting.com
>> Subject: Re: [RFI] Grow light RFI
>>
>> Tom,
>>
>> It looks like there were three test runs conducted. The tabular data shows
>> the lowest frequency tested was 14 megahertz, in runs 1 and 2. The graphic
>> data results show lower frequencies though. Can you verify the lowest
>> frequency at which these were tested? Scott
>>
>>
>> Sent via the Samsung Galaxy Note® II, an AT&T 4G LTE smartphone
>>
>> <div>-------- Original message --------</div><div>From: Tom Thompson
>> <w0ivj@tomthompson.com> </div><div>Date:12/01/2016 1:32 PM (GMT-05:00)
>> </div><div>To: Roger D Johnson <n1rj@roadrunner.com>, RFI
>> <rfi@contesting.com> </div><div>Subject: Re: [RFI] Grow light RFI
>> </div><div> </div>Roger,
>>
>> Here is an independent lab evaluation of a Galaxy ballast the may be a good
>> bet.
>>
>> http://tomthompson.com/radio/GrowLight/RFI_Tests_Galaxy_902220_FCC-Report.pdf
>>
>> Tom W0IVJ
>>
>>
>> On 12/1/2016 11:27 AM, Roger D Johnson wrote:
>>> Is there a list of ballasts that Don't cause RFI?
>>>
>>> 73, Roger
>>>
>>> _______________________________________________
>>> RFI mailing list
>>> RFI@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/rfi
>>>
>>>
>> _______________________________________________
>> RFI mailing list
>> RFI@contesting.com
>> http://lists.contesting.com/mailman/listinfo/rfi
>> _______________________________________________
>> RFI mailing list
>> RFI@contesting.com
>> http://lists.contesting.com/mailman/listinfo/rfi
>> _______________________________________________
>> RFI mailing list
>> RFI@contesting.com
>> http://lists.contesting.com/mailman/listinfo/rfi
>
> _______________________________________________
> RFI mailing list
> RFI@contesting.com
> http://lists.contesting.com/mailman/listinfo/rfi
> _______________________________________________
> RFI mailing list
> RFI@contesting.com
> http://lists.contesting.com/mailman/listinfo/rfi
_______________________________________________
RFI mailing list
RFI@contesting.com
http://lists.contesting.com/mailman/listinfo/rfi
|