Thanks for the good replies and suggestions.
As recommended, first thing for me to do is establish a noise background
reference for my station. This would include readings at different times of
day/night, different frequencies and directions, make noise recordings,
etc.
One thing, I am fortunate that all utilities are underground including the
new sub-division. There is an overhead power line about a mile away that
did generate some noise. I located the source, and luckily our local power
company responded and cleared it up.
As far as private pot growers, I don't think I have noise from them.
Arizona has legalized the commercial growing of medical pot, so we now have
five such commercial farms in our little town, the nearest being about 3
miles away.
I will look at some of the software suggests and see what works for me.
Thanks to all,
Ray,
N6VR
On Mon, May 9, 2016 at 8:30 AM, Chuck Dietz <w5prchuck@gmail.com> wrote:
> They installed a HV line (the kind on taller wood poles and long
> insulators) just north of me and I had S9 noise toward it. The noise
> turned out to be something arcing in a model home 1/4 mile away in the same
> direction. Now I cannot detect any noise from the new line.
>
> Chuck W5PR
>
> On Mon, May 9, 2016 at 9:32 AM, Grant Saviers <grants2@pacbell.net> wrote:
>
>> One thing I noticed when driving around with a PC+ USB spectrum analyzer
>> to find a new QTH, was how much quieter neighborhoods with in ground
>> utilities were from those with the old "poles and pigs" distribution
>> systems. Another observation was that big HV transmission systems were
>> quieter than expected when a few hundred yards from them. My conclusion is
>> the buried systems shield and choke the rf, just as happens with buried
>> coax. IMO, much of the rf trash we hear is generated by bad devices and
>> then radiated from pole systems. 60 acres NW of me were recently
>> developed, 20 homes on 2 acre lots plus open space and underground
>> utilities and so far so good. A plasma TV SW from me is an S4 problem, but
>> I haven't tracked it down. Hopefully, the new subdivison near you will be
>> all buried.
>>
>> Several local hams here are seriously affected S9+ all bands by large
>> grow lights for recreational substances that are clearly not FCC compliant
>> re radiated and conducted emissions. The distance can be significant - 1/4
>> mile or more. Most are probably illegal but of no interest to law
>> enforcement given trends of the new laws. The FCC either "doesn't have the
>> resources" or "won't investigate where illegal activity may be happening
>> without law enforcement present". A perfect Catch22. In the past, when
>> growing was clearly illegal, law enforcement used AM radios to find the
>> grow sites.
>>
>> Grant KZ1W
>> Redmond, WA
>>
>> On 5/9/2016 0:21 AM, Ray Benny wrote:
>>
>>> body {height: 100%; color:#000000; font-size:12pt; font-family:arial,
>>> helvetica, sans-serif;}This may seem a strange question to ask and there
>>> maybe many answers, so I will try to be specific as to what I am looking
>>> for.
>>> A new subdivision is being built about 1/4 mile away, east and north
>>> east, towards EU. The homes are custom build on 1 acre parcels. What I am
>>> trying to find out: can I expect my noise level to go up as more homes are
>>> built?
>>> I spend a lot of time on 160m. I have a RX 4SQ and 2 wire beverage, and
>>> I do hear a number of small RFI noises in a number of directions from
>>> nearby homes in my rural area. Most of the time they do not cause any long
>>> term problems. My thought is that when new housing comes in, new and more
>>> electronic gadgets will be inside that can generate more RFI.
>>> I have done some RFI tracking, mostly electric fences and
>>> leaking/defective power line hardware, but these sources are usually very
>>> distinctive and usually easy to fine. Finding wall wart, LED, etc RFI is
>>> harder to find, especially on someone else's property. Another way to ask
>>> my questions: "Does this type of RFI noise typically radiate more than
>>> several hundred feet"?
>>> Any thoughts or experiences are welcome.
>>> Tnx & 73,
>>> Ray, N6VR
>>> Chino Valley, AZ
>>>
>>>
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