[ADXA] noise issue - take 2

[w5znjoel at gmail.com]

Jussi,

 

I assume this is a large, commercial chicken house that raises broilers. If so, he will also have large commercial heaters for new baby chickens and a ton of other equipment installed. For commercial chicken houses today, the list of mandatory equipment based on gov’t regulatory requirements is extensive and the farmer has no control on what they can, and cannot, use or turn on and off. 

 

73 Joel W5ZN

 

From: Jussi Eloranta <eloranta at aa6kj.hopto.org> 
Sent: Monday, March 23, 2026 7:05 PM
To: w5znjoel at gmail.com
Cc: 'ADXA' <adxa at mailman.qth.net>
Subject: Re: [ADXA] noise issue - take 2

 

Well, now that I know what I am looking for, the only place where the signal picks up is near the power lines coming from the chicken house. It has the right spectrum. I don't think the noise is correlated with the fan activity. So, there is likely something else that propagates through the power lines. 

The problem is that this guy is extremely difficult to deal with. And I am pretty sure that he won't do anything unless I would take him to court. He won't let me anywhere near his houses or even talk to me. 

Jussi (aa6kj) 

Mar 23, 2026 5:56:25 PM w5znjoel at gmail.com <mailto:w5znjoel at gmail.com> :

Two final thoughts, Jussi.

  

You turned everything off in the shack but have you turned everything off in the house?

  

If you have neighbors 1000 ft away it could be generated from there. As I noted, I have noise on 160 meters to the east originating from a house 1500 ft away !!!!!!

  

You’re on the right track. Keep going and you’ll find it.

  

73 Joel W5ZN/ZF2ZN

  

From:  <mailto:adxa-bounces at mailman.qth.net> adxa-bounces at mailman.qth.net < <mailto:adxa-bounces at mailman.qth.net> adxa-bounces at mailman.qth.net> On Behalf Of Jussi Eloranta via ADXA
Sent: Monday, March 23, 2026 5:40 PM
To: Mark Graves < <mailto:mgraves at avecc.com> mgraves at avecc.com>; 'ADXA' < <mailto:adxa at mailman.qth.net> adxa at mailman.qth.net>
Subject: Re: [ADXA] noise issue - take 2

  

On 3/23/26 4:17 PM, Mark Graves wrote:

What does the audio component waveform look like? If line noise, it would most likely have 120 hz pulses well defined by some sort of arc on the positive and negative peaks. 

It has only 60 Hz and its harmonics. See attached. I have turned off everything in my shack and ran the radio on battery. It is still there. The distance from my antennas to the nearest neighbors is about 1000'. My house is about 700' from my shack & 160m antenna. So, whatever this is, it must be pretty strong source.

But now I know better what to look for and will setup portable 160m receive and perhaps a loop as Stan suggested.

Jussi (aa6kj)

  

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