[RFI] Sinusoidal type noise on 6 meters

Stephanie WX3K wx3k at yahoo.com
Fri Nov 3 18:21:24 EDT 2023


Street lighting…..None

I can span the scope out to 100 khz and it fills up with the same pattern

Stephanie

> On Nov 3, 2023, at 6:17 PM, Steve Dyer W1SRD via RFI <rfi at contesting.com> wrote:
> 
> Good catch Jim. I didn't study closely enough to notice the pan is only 25 kHz wide.
> One thought for Stephanie. What street lighting is nearby? You say only at dusk and on a rainy day (when maybe the light(s) come on if it's cloudy).
> GL!
> 73,
> Steve
> W1SRD
>> All
>> I have had this odd noise for some time now(Over a year)
>> My yagi azimuth peaks on a power line/pole about 200’ from my tower.
>> This is not noise coming from my house.
>> 
>> The noise shows up early evening and is intermittent and tends to die off within hours. I also hear this when its raining outside.
>> I have DFed the noise using a simple dipole and portable 50 MHz receiver and found it appears to be along the primary power line(Standard residential power distribution with telephone poles and single phase power line)
>> Here is a video clip of the noise on my rig
>> https://youtu.be/GUxJhjb1YTc?si=qy6uiAxIhuCbcxEt
>> Is this corona discharge ?
>> 
>> Stephanie WX3K
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