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
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
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?
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
Gary @N8DMT
Nicklas Johnson 🏳️🌈