I would try to take some measurements before the site becomes operational. That
will establish a baseline for comparison one it is completely up and running.
73,Gary K9GS
-------- Original message --------From: Jpock <jhpock@gmail.com> Date: 9/22/20
9:21 AM (GMT-06:00) To: "Hare, Ed W1RFI" <w1rfi@arrl.org>, rfi@contesting.com
Subject: Re: [RFI] 2 MW Solar Farm Ed,I have a RSPduo SDRplay and Kenwood
TH-D74 handheld radio setups. Someone is putting in a large solar farm just
north of me in Sturgis Mich., about 10 miles. It is not in service as of yet,
but it will soon be operational. If you wish, I can take some measurements
once it is operational.Is there anything extra or special you want me to do,
just let me know.Respectfully,Jim N9PXO------ Original Message ------From:
"Hare, Ed W1RFI" <w1rfi@arrl.org>To: "rfi@contesting.com" <rfi@contesting.com>;
"Jpock" <jhpock@gmail.com>Sent: 9/22/2020 09:46:07Subject: Re: [RFI] 2 MW Solar
Farm>If any of you all have an HF mobile set up and can go to one of these
>farms, please do and provide a report.>>Date/Time:>Location (GPS coordinates
and/or street address. Describe location if >necessary).>How far was the
measurement location from any part of the solar system?>Sun
conditions:>Band:>Receiver:>Antenna:>Antenna height:>Mode (AM preferred, SSB
useful):>Bandwidth (6 kHz preferred, 3 kHz useful):>Preamp off, if
possible:>Noise level:>Is the noise relatively constant across a large part of
the band, or >does it get louder and weaker at regular intervals as the
receiver is >tuned.>>If the receiver is an SDR, a waterfall or spectral sweep
can be useful. >If possible, remport the received signal level in absolute
units, ie >dBm, dBuV, uV, etc.>>If anyone has a spectrum analyzer and, even
better, a calibrated loop, >sweeps of each band made in RMS and quasi-peak (if
available), 9 kHz >bandwidth, with a known reference level at the top of the
analyzer >screen, so much the better.>>If you can make the same measurements on
6 meters, so much the better, >because if we have an absolute receive level, a
known-gain antenna and >known receiver conditions, we can estimate whether the
system exceeeds >the FCC emissions limits above 30 MHz.>>If you make these
reports here, I will pick up on them and see what we >can determine about the
interference potential based on actual reports.>>Ed Hare,
W1RFI>>>-------------------------------------------------------------------------------->From:
RFI <rfi-bounces+w1rfi=arrl.org@contesting.com> on behalf of >Jpock
<jhpock@gmail.com>>Sent: Tuesday, September 22, 2020 8:48
AM>To:rfi@contesting.com <rfi@contesting.com>>Subject: [RFI] 2 MW Solar
Farm>>To rfi@contesting.com>>Kim, I am in the same type of situation about
Commercial Solar Farms in>LaGrange Indiana. The county commissioners passed a
ordinance allowing>agricultural property to be transformed into solar farms.
This type of>change can cause alot of problems for amateur radio
operators.>>Any type of information that can be shared will be useful!
Thank-you>Scott K9MA for sharing.>>Respectfully,>Jim N9PXO>>------ Original
Message ------>From: "K9MA" <k9ma@sdellington.us>>To: rfi@contesting.com>Sent:
9/21/2020 23:42:36>Subject: Re: [RFI] 2 MW Solar Farm>> >Hopefully not as bad
as the 2.3 MS Siemens wind turbines in New >Zealand. ZL6QH had to abandon a
huge antenna farm because of RFI. Their >noise floor went up 50 dB on 80, and
only a few of the planned turbines >were in operation. While not quite the
same, solar and wind power >systems both use high frequency switching
converters capable of >generating lots of RFI.> >>
>http://www.zl6qh.com/rf-noise-measurements-quartz-hill-2009-v3.pdf> >> >73,>
>Scott K9MA> >> >> >> >On 9/21/2020 11:56 AM, Kim Elmore wrote:> >>I just
learned that a 2 MW solar farm is being built about 3/4 mi >from my QTH. I
don’t know who is behind it, though I ssume it’s a >utility company of some
sort as 2 MW sounds moderately large. Does >anyone have any experience with
these? How much of an RFI source are >they?> >>> >>Kim N5OP> >>> >>"People that
make music together cannot be enemies, at least as long >as the music lasts."
-- Paul Hindemith> >>_______________________________________________> >>RFI
mailing list> >>RFI@contesting.com>
>>http://lists.contesting.com/mailman/listinfo/rfi> >> >> >-- Scott K9MA> >>
>k9ma@sdellington.us> >> >_______________________________________________> >RFI
mailing list> >RFI@contesting.com>
>http://lists.contesting.com/mailman/listinfo/rfi>>_______________________________________________>RFI
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