Re: [RFI] Another Grow Light

[Tom Thompson <w0ivj@tomthompson.com>]

Hi Don,

Here is an example of a grow light ballast without and with a filter.  
The dead time in between is normal band noise.
http://tomthompson.com/radio/GrowLight/Grow%20Light%20Ballast%20Filter%20Out%20in%20Comparison.wav

Tom   W0IVJ


On 11/10/2014 7:22 PM, Goldtr8 (KD8NNU) wrote:
> Group,
>
> Is there a recording of what a grow light sound like?   I have traced 
> a noise less than 1 mile from my home on the low bands, but I need to 
> know what I might be looking for.
> I know it’s not a power pole as it turns on in the evening but does 
> not last all night.
> Thanks
> Don
>
> ~73
> Don
> KD8NNU
> 2014 3905CC Top Gun :-)
> -.- -.. ---.. -. -. ..-
> -----Original Message----- From: Tom Thompson
> Sent: Monday, November 10, 2014 12:04 AM
> To: dave@nk7z.net ; rfi@contesting.com
> Subject: Re: [RFI] Another Grow Light
>
> Hi Dave,
>
> The filter is my design but I understand that a very similar filter is
> in the process of being available commercially.  I'll keep the group
> informed as I find out more details.
>
> 73,   Tom   W0IVJ
>
>
> On 11/9/2014 7:32 PM, David Cole wrote:
> > Tom,
> > Was the filter you offered, your design, (on your web page), or a
> > commercial one?
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