#rtvi — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #rtvi, aggregated by home.social.
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Moscú ya tiene nuevo favorito para las elecciones y NO es Robert Kocharyán. 😲 En una entrevista en la TV rusa, dejaron claro que ahora apuestan por Samvel Karapetyán, el dueño de Tashir. 💼⚡ Cuestionaron fuerte a Kocharyán por la guerra y le soltaron la mano. ¿Se retirará de la campaña? #armenia #elecciones_2026 #ereván #GrupoTashir #moscú #NikolPashinyan #RobertKocharyan #rtvi #rusia #SamvelKarapetyan https://soyarmenio.com/moscu-favorito-elecciones-armenia-karapetyan/
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An update, for anyone who has been watching the saga of my trying to get our local electrical utility to maintain their equipment and to stop running accidental spark-gap transmitters all over the place.
TLDR: one pole was fixed (after 2 months), but there's another, secondary source, stronger yet further away, which has gone unrepaired for almost 2 months since I reported it.
RFI repair is fire prevention, but PG&E would rather run PR campaigns than do any actual maintenance work.
https://n6ol.us/2024/07/07/pges-resistance-to-fixing-qrm-is-getting-old/
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I made a thing.
Because I collect data once a minute, every minute, 24 hours a day, I am able to summarize when the secondary source of PG&E powerline noise is most likely to occur on any given day. This is useful for being able to tell the RFI-hunting crew when they should come out looking.
The summarized data begins the day after the PG&E crew fixed the primary noise source (the one that had been just two houses down).
I'm probably not going to win many friends by telling them they'll need to come during lunch, but that appears to be the best opportunity, followed by 13:30-14:45 each day.
#PGE #Powerline #Noise #Interference #RFI #RTVI #HamRadio #AmateurRadio #QRM
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PG&E has definitely fixed the primary noise source. Hurrah!
But now that the primary noise source is quiet, I've discovered a secondary noise source. Boo!
This one appears to be coming from a high-tension pylon adjacent their substation, about 250 meters away. Fortunately or unfortunately, it's also a lot more sporadic.
It's progress.
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PG&E is here with a significant work crew to rebuild the pole which hosts their accidental spark-gap transmitter!
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PG&E just came back from their noise hunting and told me they agree with me- it is the pole I told them it was. And one of the guys could even hear it arcing while he was standing underneath of the pole. I am not crazy! They're going to have a crew come out and "rebuild" what's on that pole. No ETA, but at least we're on a path to resolution.
I probably prevented a fire, property damage, or someone getting hurt.
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I finally have an appointment with PG&E's communication tech to come out and take a look for the godawful interference they're spewing in my neighborhood. Luckily it's on Thursday, when our weather forecast is sunny and dry-- if past data collection is any indication, this should exacerbate the issue and it should be buzzing like hell when they come out. 🤞
From the time I reported the problem to the time they finally set up an appointment with someone who is able to look into it was 56 days.
I also learned that the high voltage lines that run across the top are 12kV. More than enough to cause trouble.
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55 days after I opened my radio interference ticket, I finally got a call today from PG&E from someone who can look into the actual problem and trace out the RFI... or in this case, confirm it's coming from where I already told them it's coming from after my own troubleshooting.
They really need a better way of responding to this kind of problem.
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I have now determined with high certainty which utility pole is causing the #RFI problem in my neighborhood. It's very near my QTH.
To differentiate it, I stood directly in front of it where turning to the left would point me at the other suspect pole but put the pole I was facing in the 45° null in the antenna pattern.
When I turned to face the other suspect pole, the sound went away as the first pole fell into the null in the pattern.
Then I walked around to the other block and pointed around from the other direction just to make sure it wasn't some other utility pole in the same direction but further away.
I'm about 99.44% certain I've found the culprit. Now I just need to get PG&E to do something about it.
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I promised some data, and here it is!
I didn't record the actual sound unfortunately but you can see a massive discontinuity in the noise floor at just before 6 AM Pacific time (America/Los_Angeles) followed by highly unsettled noise floor conditions for the remainder of the day.
The next graph picks up again after midnight (and unfortunately stops just before 7 AM because the battery voltage got too low and my radio switched off). You can see the unsettled conditions start to simmer down again by about 5 AM.
This looks like it MAY have correlated with a solar flare that peaked at 7:55 AM Pacific (14:55 AM UTC). If so, it's a fascinating and unexpected result! I just wanted to chart the noise my local power company is making!
#HamRadio #AmateurRadio #HamSci #Science #nerd #SolarFlare #DSP #RFI #RTVI
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Another blog entry on the ongoing saga of my electrical utility blanketing my neighborhood with RFI from what I suspect to be a faulty insulator. This time we look at some sine waves overlaid atop sampled audio, and take a look at a thermal image of the suspect utility pole.
https://n6ol.us/2024/04/10/another-view-of-pge-powerline-noise/
#HamRadio #AmateurRadio #RFI #RTVI #PGE #powerlineNoise #interference
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One of these insulators is not like the others.
It could just be coincidental, and it's far from being conclusive, but it looks like one ceramic insulator on this utility pole is warm, while the others are cool enough not to show up at all.
I can't prove that's where the buzz is coming from that blanks out everything from 2MHz to 50MHz, but it seems plausible.
#HamRadio #AmateurRadio #RFI #RTVI #interference #powerlineNoise
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I've gone and done it... I've bought an infrared camera add-on for my phone.
Total nerd toy, but hear me out: this powerline buzzing that I have on my radio half the day is likely not to only be creating RF noise; it's probably creating heat as well. On a cool day, it may be possible to spot which insulator or lightning arrestor is heating up from being pulsed 120 times per second with hundreds of volts arcing across/through it.
If so, it should stand out like a sore thumb with thermal imaging, right?
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I did a bloggy thingy about PG&E's powerline noise.
https://n6ol.us/2024/04/06/pge-powerline-noise-in-san-mateo/
#PGE #HamRadio #AmateurRadio #RFI #RTVI #Interference #PowerlineNoise
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Настоящєє врємя взяли на роботу ще одного хорошого росіянина Ілью Клішина, що раніше працював на #RTVi, Дождє та РІА Новості.
Раніше Ілья роздумував на тему, як рашці зберегти Крим після путіна