Can you send a wav file, about 15 - 30 seconds, AM
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On Jan 8, 2020, 5:53 AM, at 5:53 AM, AA5CT via RFI <rfi@contesting.com> wrote:
>I have found power line noise sources on 160 all the way out to 5
>miles.
>
>Here's a list of some of the more notable sources found over the last
>decade or so:
>
>https://powerlinenoiseallentexas.wordpress.com/
>
>One of them not listed was on a co-op power pole that had a bad
>lightning
>arrester and was 5 miles out to my NE.
>
>HERE'S what I successfully use, time and TIME again:
>
>https://powerlinenoiseallentexas.wordpress.com/df-equipment/
>
>Good luck in the hunt.
>
>de AA5CT
>
>.
>. On Tuesday, January 7, 2020, 10:55:25 PM CST, Kenny Silverman
><kenny.k2kw@gmail.com> wrote:
>
> Hi and thanks in advance!
>
>We’ve been trying to track down some noise at a friends house but no
>luck so far and I was hoping for some tips on finding it. The buzz
>comes on at sundown and turns off at sunrise. It’s bad on 160 but it
>can be heard Lightly on 80 and 40. The noise is constant and does not
>cycle (at least for the 90 minutes I was listening to it tonight). The
>worst direction is on the East beverage on 160. On 80m it seemed like
>the worst was to the NW... it could be 2 sources but the noise appears
>to come on at the same time in all directions, not a staggered turn
>on/off. Could be a single source but poor F/B on the beverages. The
>Listening to the ARRL RFI files it sounds like power line noise or
>street lamps ( but without the cycling). Over the 90 minutes tonight
>there were almost no variations (except for an occasional change in
>pitch).
>
>We've DF’d on a portable AM radio, 2m and ultrasonic device. AM
>identified some noisy poles but we’re not convinced these are the main
>offenders. Not much luck with VHF or ultrasonic. Our next plan is to
>use a KX3 on 160m and a decent RX loop to direction find and
>triangulate.
>
> I suspect we’re not looking out far enough... suggestions on how far
>away we should be looking? And how close do we need to be to hear it
>on VHF?
>
>Besides power lines and street lamps, other thoughts on possible
>offenders? Most of the area is residential with street lamps on most
>streets.
>
>Regards , Kenny K2KW
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