Re: [RFI] Grow light RFI

[Jim Brown <jim@audiosystemsgroup.com>]

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
> >
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