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[TenTec] Omni D and electrical noise from house wiring

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Subject: [TenTec] Omni D and electrical noise from house wiring
From: JimN0OCT@aol.com (JimN0OCT@aol.com)
Date: Thu, 22 Apr 1999 13:50:17 EDT
Are any of these lights touch-sensitive lamps?  If so, retrowire them back to 
normal switches.

73, Jim NØOCT

In a message dated 22-Apr-99 12:35:31 Central Daylight Time, frohro@wwc.edu 
writes:

> Jason Reber wrote:
>  
>  >  I wonder if anyone has had a similar problem: I am using an Omni D
>  > with a 252 power supply, and run an MFJ antenna tuner and RG-58 coax
>  > to a remote switchbox, which then selects 1 of 5 dipole antennas. I
>  > have the rig grounded to a cold water pipe nearby.  I find that on 30
>  > and 40 Meters, especially in the evenings, I get patches of very loud
>  > electrical noise, which covers about a 10 KHz portion of the
>  > frequency. It just comes in, seemingly out of nowhere, lasts for 4 or
>  > 5 minutes, and then moves up or down the band several KHz.  One time
>  > when the noise came in, destroying my QSO, I inadvertently turned off
>  > one of the lights in my shack (there are 2 light circuits in the room,
>  > and one in the hall nearby). The noise suddenly disappeared. I turned
>  > the light back on, and it came back. I then turned off the other light
>  > in the shack, and the noise disappeared again. Then I tried turning
>  > the hall light off (it was on at the time), and the noise came
>  > back!The strange thing is, turning lights on and off in other parts of
>  > the house, including those not even on the same breaker, seem to
>  > affect the noise. The noise doesn't show up on 10, 15, or 80 meters
>  > near as bad. I also found that the noise will show up on my old
>  > Hallicrafters S-76 receiver if I tune it to the same freq. as my Omni
>  > D. Also strange is the fact the turning off and on lights doesn't
>  > eliminate the noise- it just causes it to move several KHz up or down
>  > the band.Does anyone have and idea on what could be causing this?
>  > I really appreciate the knowledge and help often found on this
>  > reflector.Thanks,Jason   KA7UAM


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