My point exactly, he is not thinking correctly, and in some cases we, as
Amateurs, are forced to deal with them... I just assume everyone is
crazy now... :)
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources
On 12/25/22 18:29, James Gordon Beattie Jr wrote:
Dave,
Good grief! What an idiot!
I live on 18+ acres of mostly open land with mostly open land on
adjacent properties and I exercise GREAT CARE when target shooting.
Home invasion is handled with a prudent assortment of firearms and
rounds because we do have neighbors in some directions as close as
500-600 feet. I can not imagine discharging a firearm on a small city
lot without a lot of duress.
73,
J. Gordon "Gordie" Beattie, Jr., W2TTT
201.314.6964
W2TTT@ATT.NET
Gordon.BeattieJr@VIAVISolutions.com
Get On The Air!
------------------------------------------------------------------------
*From:* Dave (NK7Z) <dave@nk7z.net>
*Sent:* Sunday, December 25, 2022 9:00:18 PM
*To:* James Gordon Beattie Jr <w2ttt@att.net>; Hare, Ed, W1RFI
<w1rfi@arrl.org>; rfi@contesting.com <rfi@contesting.com>
*Subject:* Re: [RFI] : Solar Panerl RFI / noise in sync with music
That sir, is a very valid concern... Here is a short story about a
grower two blocks from my home, causing RFI...
Myself and another ham located a major RFI source in my, and his
neighborhood. This fellow was defiantly a grower-- he started to show
me his growers card, at which point, I told him it is not what he is
growing that is the issue, it is the RFI that is the issue...
We chatted, and all went well, he was very friendly, and understood the
issue, and fixed the problem. I imagined I would never see, or hear, of
him again...
Maybe 8 months later, he started shooting Tannerite canisters in his
front yard with his AR-15. Tannerite is a binary explosive that when
shot it, it explodes with an impressive amount of smoke and a loud
noise. They are fun to shoot! I sometimes go shooting and blow a few
of them up with friends...
Anyway, he shot several of these from his front porch, all with his
fully tricked out AR-15, exploding them in the front yard. The only
problem is he lives within city limits, and in a very crowded
neighborhood, not micro lots, but small lots, and lots of them...
His neighbors naturally called the police, and he ended up running from
them, thankfully no one got shot in that mess...
Why do I relate this... One-- given no one got shot, it's sort of a
funny story-- and two, this is one of those stories that reinforce the
need to always be friendly, and nice, at all times, NEVER aggressive
with RFI generating folk... You may get a surprise. Plus it is not a
bad plan to be nice to everyone anyway...
Merry Christmas to all...
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net <https://www.nk7z.net>
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources
On 12/25/22 17:17, James Gordon Beattie Jr wrote:
Dave,
Mess with grow light operators and you stand an even better chance of
being shot than messing with the guy with the steroidal car stereo!
73,
J. Gordon "Gordie" Beattie, Jr., W2TTT
201.314.6964
W2TTT@ATT.NET
Gordon.BeattieJr@VIAVISolutions.com
Get On The Air!
------------------------------------------------------------------------
*From:* RFI <rfi-bounces+w2ttt=att.net@contesting.com> on behalf of Dave
(NK7Z) <dave@nk7z.net>
*Sent:* Sunday, December 25, 2022 8:01:44 PM
*To:* Hare, Ed, W1RFI <w1rfi@arrl.org>; rfi@contesting.com
<rfi@contesting.com>
*Subject:* Re: [RFI] : Solar Panerl RFI / noise in sync with music
I so wish the local grow lights worked that way... :)
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net <https://www.nk7z.net> <https://www.nk7z.net
<https://www.nk7z.net>>
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources
On 12/25/22 16:17, Hare, Ed, W1RFI wrote:
24.998 MHz would have done just as well. 🙂
I have a funny story about that sort of thing. A few years back, I was
doing a lot of HF mobile work on CW. One day, I went way to the back of
a parking lot to operate. The lot was almost empty. A car pulled and
parked right next me with the car audio system blasting away, loud, with
the bass buzzing like most of them do. I mean, he had a whole flippin'
parking lot, and he had to park right next to me.
100W CW, 14 MHz: CQ CQ CQ DE W1RFI/M W1RFI/M CQ CQ CQ DE W1RFI/M K
I happened to look over and he was fiddling with the controls of his
sound system. When I stopped, he stopped. I let him be for a minute and
sent a single dit. He jumped a bit. Aha!
I then just sent my call, and he reached for the sound system, then
stopped when I did.
I started sending a string of dits and watched him fiddle, then stopped,
then sent dits then stopped.
Finally, he looked over at my car with the big antenna and saw my
pie-eatin' grin, gave me a really dirty look and drove away.
Now, if had been playing Metallica, I wouldn't have minded, but rap
ain't music at any volume.
There's another couple of related "immunity" stories. I was doing BPL
testing in Ohio with a very cooperative BPL operator. We were measuring
radiated emissions, but also looking as susceptibility. The emissions
were horrible, right at the limits because he had warned the company
that he didn't want any trouble from "Ed." (I didn't have a last name in
that industry. I decided to fire up a transmitter, 100W to a mobile
whip on various bands. What I found was that if I did a brief
transmission, the system stopped, then quickly resumed normal
operation. But if I transmitted for more than 20 seconds, the system
did a hard stop and the modems on each end of a leg had to reconnect
with each other. So, 21 seconds of carrier and the band was pretty
quiet, except for bit of light clicking. Then, after about 30 seconds,
I could hear modem negotiation sounds, then after about 3 minutes, data
started flowing again. We found that SSB or CW slowed it down, but
didn't take it down. There was enough data getting through that the
system didn't think it had lost communication and reboot itself.
So, that afternoon, the BPL operator joined us. We were running around
and he was showing us how he could monitor data rates over WiFi from a
laptop in the back seat. We were on a part of the system operating on
the 50 MHz band, so I switched the transceiver to 50 MHz CW and a
6-meter antenna. When he heard how loud the noise was, about S9+10 dB,
he said he understood why they should not use the ham bands. As we were
talking, I casually reached over and keyed the transmitter with 5 watts
He was in the back seat and he asked, "Hey. where did it go?" I told
him that I had just transmitted on 6 meters with low power. Let's just
say his expression was colorful and very holy. I then told him that if I
transmitted for 21 seconds, his system would be down for about 3 to 5
minutes. He asked me to demonstrate. I did, and it did just what I had
seen at other parts of his system.
He ultimately did resolve all of the interference problems by careful
choice of frequency, but he was plagued with intemittencies all along as
various VHF operation took the system down.
Now, this one has a followup. FPL in Florida set up a BPL trial area.
A ham was squarely in the trial area, so he contacted me and asked what
he should do. He had about S9 noise across several bands. I told him
how and why he should complain, but I also told him the story that had
happened in Ohio. I went on to explain that if he operated SSB or CW,
he'd slow the system down, but that FM or digital operation would take
it down hard. He wasn't a CW op, but he said that he was very
interested in learning digital operation. So, he set up a 10-minute brag
tape and get himself all set up to do PSK-31. PSK-31 was robust enough
that he was able to make contacts, and he said that he was having so
much fun that he operated for hours nearly every night.
Several months later, they shut down the trial. He talked iwth the
engineer who was in charge of the system, who told him that the system
just wasn't reliable, because it would stop working for hours on end in
the evening when everybody was home using it.
And that's another story that never made it to the pages of QST! I got
37 years worth of them! LOL!
Ed, W1RFI
------------------------------------------------------------------------
*From:* RFI <rfi-bounces+w1rfi=arrl.org@contesting.com> on behalf of
Dave (NK7Z) <dave@nk7z.net>
*Sent:* Sunday, December 25, 2022 6:48 PM
*To:* rfi@contesting.com <rfi@contesting.com>
*Subject:* Re: [RFI] : Solar Panerl RFI / noise in sync with music
Did you by chance transmit on that frequency, while the thing was on? :)
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net <https://www.nk7z.net> <https://www.nk7z.net
<https://www.nk7z.net>> <https://www.nk7z.net
<https://www.nk7z.net <https://www.nk7z.net>>>
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources
On 12/25/22 12:09, Henry Pfizenmayer via RFI wrote:
Mike et al ---If that was not tongue in cheek as they say -- this last summer
I started getting thumps of
noise on 6 meters -and was far worse at 25 mhz -- Then I noticed it was in
sync with neighbors outside
speakers thumping out a strong bass line. I went out with my IcomR10 rx
and loop -
and yep that was the source. The amp was obviously going into oscillation in
sync with the loud bass notes .
No use talking to that guy - so I just prayed the damn amp would fry itself .
Prayers were answered
in just a hour or so and noise never re-appeared.
73 Hank K7HP
Message: 1
Date: Sun, 25 Dec 2022 11:51:20 -0500
From: Michael Martin <mike@rfiservices.com>
To: "Dave (NK7Z)" <dave@nk7z.net>
Cc: Rfi List <rfi@contesting.com>
Subject: Re: [RFI] Another Solar Panel RFI System
Message-ID:
<CAPZkRSEvyTNyLcJT-3e1gNnkTP+WNX15DFXUXHpqf5YZa67YEw@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
I'm trying to capture a noise with the intermittency rhythm in sync with
Christmas music
Michael Martin
RFI Services
51 W Bay Front Rd
Lothian, MD 20711
240-508-3760
mike@rfiservices.com
www.rfiservices.com<https://webmail.centurylink.net/app/www.rfiservices.com
<https://webmail.centurylink.net/app/www.rfiservices.com
<https://webmail.centurylink.net/app/www.rfiservices.com
<https://webmail.centurylink.net/app/www.rfiservices.com>>>>
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