[RFI] Fwd: Re: Help finding a source

[chuck.gooden]

If it is powerline issue, I would turn off the main breaker with your radio on a battery to verify the issue is not in your house before you find out the hard way when the fire trucks arrive.
-------- Original message --------From: Charles Plunk <af4o at twc.com> Date: 12/4/19  6:58 PM  (GMT-06:00) To: Rfi List <rfi at contesting.com> Subject: [RFI] Fwd: Re:  Help finding a source I agree, just sounds like power line arcing. Heaven knows I have heard my share of it.ChuckAF4OOn 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:>>_______________________________________________RFI mailing listRFI at contesting.comhttp://lists.contesting.com/mailman/listinfo/rfi