[RFI] : Solar Panerl RFI / noise in sync with music

Dave (NK7Z) dave at nk7z.net
Mon Dec 26 02:28:29 EST 2022 

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 at ATT.NET
> Gordon.BeattieJr at VIAVISolutions.com
> 
> 
> Get On The Air!
> 
> ------------------------------------------------------------------------
> *From:* Dave (NK7Z) <dave at nk7z.net>
> *Sent:* Sunday, December 25, 2022 9:00:18 PM
> *To:* James Gordon Beattie Jr <w2ttt at att.net>; Hare, Ed, W1RFI 
> <w1rfi at arrl.org>; rfi at contesting.com <rfi at 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 at ATT.NET
>> Gordon.BeattieJr at VIAVISolutions.com
>> 
>> 
>> Get On The Air!
>> 
>> ------------------------------------------------------------------------
>> *From:* RFI <rfi-bounces+w2ttt=att.net at contesting.com> on behalf of Dave 
>> (NK7Z) <dave at nk7z.net>
>> *Sent:* Sunday, December 25, 2022 8:01:44 PM
>> *To:* Hare, Ed, W1RFI <w1rfi at arrl.org>; rfi at contesting.com 
>> <rfi at 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 at contesting.com> on behalf of 
>>> Dave (NK7Z) <dave at nk7z.net>
>>> *Sent:* Sunday, December 25, 2022 6:48 PM
>>> *To:* rfi at contesting.com <rfi at 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 at rfiservices.com>
>>>> To: "Dave (NK7Z)" <dave at nk7z.net>
>>>> Cc: Rfi List <rfi at contesting.com>
>>>> Subject: Re: [RFI] Another Solar Panel RFI System
>>>> Message-ID:
>>>> <CAPZkRSEvyTNyLcJT-3e1gNnkTP+WNX15DFXUXHpqf5YZa67YEw at 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 at 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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