Re: [RFI] Noise changes when room lights turn on / off UPDATE

[Tony <dxdx@optonline.net>]

On 9/13/2012 11:32 PM, Wes Attaway (N5WA) wrote:
> Do you have outside lighting that turns on during the time period in
> question?
I do but the noise persists with that breaker turned off. I even took 
the light off the house and disconnected it just to make sure.
Tony


> ----------------- Wes Attaway (N5WA) -------------------
> 1138 Waters Edge Circle, Shreveport, LA 71106
>      318-797-4972 (Office) - 318-393-3289 (Cell)
>          Computer Consulting and Forensics
> -------------- EnCase Certified Examiner ---------------
>
>
> -----Original Message-----
> From: RFI [mailto:rfi-bounces@contesting.com] On Behalf Of Tony
> Sent: Thursday, September 13, 2012 10:09 PM
> To: Rfi List
> Subject: Re: [RFI] Noise changes when room lights turn on / off UPDATE
>
> All:
>
> Just an update on the noise:
>
> Turned off all breakers in the house except for one that powers a single
> A/C outlet in the shack. The noise was still there. Friend has not come
> through with his battery powered HF rig so I might just by a small 12
> volt so I can run the rig with the main breaker turned off.
>
> To recap:
>
> - noise appears each night between 7PM and 8 PM.
> - Continues intermittently until morning and is not heard during the day
> - it sounds similar to line noise. It's wide-band about 30khz in width
> - It appears every 120 kHz on several HF bands.
> - noise shifts in frequency when shack light is turned on / off using
> house switch
> - shack light is not the source of the noise. It's there with the light
> unplugged
> - noise appears on a heading that is beaming away from my QTH
>
> Noise video - http://www.youtube.com/watch?v=EYHbpLfQ1gc
>
> Thanks,
>
> Tony -K2MO
>
>
>
>
> -
>
> > > All:
> > >
> > > The noise that appeared this evening at 7:00pm may have something to
> > do with AC power coming into the house. I noticed that the noise
> > changed when I turned the shack light on and off. This video shows
> > what happens: http://www.youtube.com/watch?v=EYHbpLfQ1gc
> > > There are no florescent lights or touch lamps in the house.
> > Unplugging the shack light does not make the noise go away. Turning
> > the shack's light switch on or off with the light unplugged does not
> > change the noise. The noise persists with power supplies, computers
> > and TV's turned off or unplugged.
> > > I'll investigate further and report back tomorrow.
> > >
> > > Thanks,
> > >
> > > Tony -K2MO
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