Do you have outside lighting that turns on during the time period in
question?
----------------- 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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