[RFI] Fwd: Re: Help finding a source

[Charles Plunk]

I agree, just sounds like power line arcing. Heaven knows I have heard 
my share of it.

Chuck
AF4O

On 12/4/19 6:01 PM, David Eckhardt wrote:
> Try again:
>
> In your third image, the audio spectrum, the groups (first peak of first
> group to first peak of next group) is 17.5 ms.
> deleted image...........
> The period on one cycle at 60 Hz is 16.67 ms. Very close. The sound clip
> also sounds suspiciously like 60 Hz discharge from the power distribution
> somewhere in your vicinity. I usually detect this at 120 Hz as the
> discharge occurs at both the + and - peaks of the sine wave. But not in
> this case. In the time domain, I also usually detect an exponentially
> decaying envelope for each discharge. No so in this case. But,
> considering the period and sound, I'd guess its due to power distribution
> discharge in you area. Walk the power lines with your battery-powered
> radio. When you find a pole that is particularly, kick the pole hard and
> observe any change in the character of the sound on your radio. If no
> change, its not at that pole. Continue searching. Also, damp weather
> usually exacerbates the discharges as does dusty conditions.
>
> Dave - WØLEV
>
> On Thu, Dec 5, 2019 at 12:00 AM David Eckhardt <davearea51a at gmail.com>
> wrote:
>
>