CloseUpRussia<p>Лысково, Нижегородская область | Lyskovo, Nizhny Novgorod region, 2013.<br>(c) Artem Lezhepekov <br> <br><a href="https://mastodon.social/tags/closeuprussia" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>closeuprussia</span></a> <a href="https://mastodon.social/tags/artemlezhepekov" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>artemlezhepekov</span></a> <a href="https://mastodon.social/tags/rf" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>rf</span></a> <a href="https://mastodon.social/tags/photography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>photography</span></a> <a href="https://mastodon.social/tags/photo" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>photo</span></a></p><p><span class="h-card" translate="no"><a href="https://mastodon.ml/@rf" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>rf</span></a></span></p>
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#rf
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Doug Bostrom<p>Soup-to-nuts investigation and implementation.</p><p>"A hybrid wireless communication system for real-time image transmission is demonstrated to show the outstanding features of SLMPM. We believe that SLMPM can contribute to the sustainable advancement of future wireless communications, rendering them more cost-effective, energy-efficient, environment-friendly, and ubiquitous."</p><p>Pre-xenophobic Larry Niven stuff, except real. </p><p><a href="https://scicomm.xyz/tags/RF" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RF</span></a></p><p><a href="https://www.nature.com/articles/s41467-025-57923-2" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">nature.com/articles/s41467-025</span><span class="invisible">-57923-2</span></a></p>
IT News<p>A Hacker’s Approach to All Things Antenna - When your homebrew Yagi antenna only sort-of works, or when your WiFi cantenna see... - <a href="https://hackaday.com/2025/03/16/a-hackers-approach-to-all-things-antenna/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">hackaday.com/2025/03/16/a-hack</span><span class="invisible">ers-approach-to-all-things-antenna/</span></a> <a href="https://schleuss.online/tags/omnidirectional" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>omnidirectional</span></a> <a href="https://schleuss.online/tags/radiohacks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>radiohacks</span></a> <a href="https://schleuss.online/tags/wavelength" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>wavelength</span></a> <a href="https://schleuss.online/tags/antenna" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>antenna</span></a> <a href="https://schleuss.online/tags/signal" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>signal</span></a> <a href="https://schleuss.online/tags/tuning" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>tuning</span></a> <a href="https://schleuss.online/tags/rf" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>rf</span></a></p>
Philip Bragg<p>Today I set up my three HP 5335A counters so I could measure the OCXO warmup curves of both the units that have OCXOs using the third, which has an external GPSDO reference. I wrote a PHP script to measure Frequency A and Frequency B alternately every 4 seconds, with A and B inputs connected to the Reference Out sockets of the other two. Here's how it looks on a garish Apple Numbers chart. Both oscillators seem to have a very similar warmup curve - though the frequency offset is slightly different (it's quite hard to calibrate them exactly) <a href="https://bsd.network/tags/radio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>radio</span></a> <a href="https://bsd.network/tags/rf" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>rf</span></a> <a href="https://bsd.network/tags/electronics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>electronics</span></a> <a href="https://bsd.network/tags/HP" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HP</span></a></p>
PipelineC<p>Check out <span class="h-card" translate="no"><a href="https://mastodon.radio/@dutracgi" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>dutracgi</span></a></span> 's very cool <a href="https://fosstodon.org/tags/16APSK" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>16APSK</span></a> <a href="https://fosstodon.org/tags/FPGA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>FPGA</span></a> Modulator written in <a href="https://fosstodon.org/tags/PipelineC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PipelineC</span></a> <a href="https://fosstodon.org/tags/HDL" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HDL</span></a> !<br><a href="https://fosstodon.org/tags/dsp" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>dsp</span></a> <a href="https://fosstodon.org/tags/sdr" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>sdr</span></a> <a href="https://fosstodon.org/tags/rf" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>rf</span></a> <a href="https://fosstodon.org/tags/apsk" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>apsk</span></a> <a href="https://fosstodon.org/tags/dac" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>dac</span></a> <a href="https://fosstodon.org/tags/deltasigma" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>deltasigma</span></a> <a href="https://fosstodon.org/tags/space" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>space</span></a> <a href="https://fosstodon.org/tags/qam" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>qam</span></a> <a href="https://fosstodon.org/tags/radio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>radio</span></a> <a href="https://fosstodon.org/tags/hardware" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hardware</span></a> <a href="https://www.linkedin.com/pulse/16-apsk-modulator-fpga-using-pipelinec-hdl-paulo-dutra-79uce/?trackingId=ldQbwhDmRd%2BU7F35jVGjAQ%3D%3D" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">linkedin.com/pulse/16-apsk-mod</span><span class="invisible">ulator-fpga-using-pipelinec-hdl-paulo-dutra-79uce/?trackingId=ldQbwhDmRd%2BU7F35jVGjAQ%3D%3D</span></a></p>
James MorrisThe results are in, with 18 votes. I kind of like bsky but not seeing a critical mass of people in my areas of interest.<br><br>If you answered other, please feel free to explain.<br><br>In honor of this landslide vote, here's a photo of my latest tinkering: making pipecap filters for an 11 GHz RF multiplier (using the W1GHZ board & design). I'll use brass M3 tuning screws once some arrive from McMaster-Carr, although I'd be interested to see if they are very different to stainless steel. And yes, I had to order them online after not finding any metric brass fasteners locally. Why not use SAE screws? Standard metric screws have much higher TPI, even more than fine-thread SAE. This will provide better mechanical stability & finer tuning, but then again, I'm not building a spaceship here, so 🤷<br><br><a class="hashtag" href="https://social.kernel.org/tag/hamradio" rel="nofollow noopener noreferrer" target="_blank">#hamradio</a> <a class="hashtag" href="https://social.kernel.org/tag/amateurradio" rel="nofollow noopener noreferrer" target="_blank">#amateurradio</a> <a class="hashtag" href="https://social.kernel.org/tag/microwave" rel="nofollow noopener noreferrer" target="_blank">#microwave</a> <a class="hashtag" href="https://social.kernel.org/tag/rf" rel="nofollow noopener noreferrer" target="_blank">#rf</a> <a class="hashtag" href="https://social.kernel.org/tag/nerds" rel="nofollow noopener noreferrer" target="_blank">#nerds</a> <a class="hashtag" href="https://social.kernel.org/tag/fediverse" rel="nofollow noopener noreferrer" target="_blank">#fediverse</a><span class=""><br><br>RE: <a href="https://social.kernel.org/objects/81c8273c-6a3f-43d9-bfc9-673541118280" rel="nofollow noopener noreferrer" target="_blank">https://social.kernel.org/objects/81c8273c-6a3f-43d9-bfc9-673541118280</a></span>
David Hembrow<p>I spent far too much time today trying to work out why my little ESP32C3 Supermini board was having trouble connecting to my WiFi. Turns out that the little ceramic antenna needs to be helped with a 62.5 mm long piece of wire.</p><p>For some reason this problem only made itself known when the device was right next to my WiFi router, but never showed up at all when it was on my desk on another floor. From another floor it worked every time. 10 cm away from the router it needs the extra antenna.</p><p>RF is bonkers.<br><a href="https://todon.eu/tags/esp32" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>esp32</span></a> <a href="https://todon.eu/tags/rf" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>rf</span></a> <a href="https://todon.eu/tags/diy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>diy</span></a></p>
Rasmus SA5RJS<p>Dear radio frequency engineering fediverse,</p><p>Do you know of a good article that describes how to conduct a two-tone test to measure intermodulation properly? I understand the basics and I know to generate the test signal and how to measure the result on a TinySA. However, I don't know how to determine if my test signal is clean enough, has a reasonable power level, etc. In other words, I don't trust that I understand my test setup enough to trust my results..</p><p>Do you have any good links?</p><p><a href="https://tilde.zone/tags/AmateurRadio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>AmateurRadio</span></a> <a href="https://tilde.zone/tags/HamRadio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HamRadio</span></a> <a href="https://tilde.zone/tags/RF" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RF</span></a> <a href="https://tilde.zone/tags/electronics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>electronics</span></a> <a href="https://tilde.zone/tags/RfElectronics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RfElectronics</span></a></p>
Всероссийское движение «ПЛОРС»<p>Начиная с 24 февраля 2022 года на территории России проводятся масштабные испытания ядов на людях с целью изучения воздействия различных отравляющих веществ на организм человека и параллельного решения прочих задач, возложенных на российские спецслужбы.</p><p>Сайт: <a href="https://plors.org" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">plors.org</span><span class="invisible"></span></a><br>Форум: <a href="https://forum.plors.org" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">forum.plors.org</span><span class="invisible"></span></a></p><p><a href="https://mastodon.social/tags/OSINT" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>OSINT</span></a> <a href="https://mastodon.social/tags/%D1%80%D0%B0%D1%81%D1%81%D0%BB%D0%B5%D0%B4%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D0%B5" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>расследование</span></a> <a href="https://mastodon.social/tags/%D1%8F%D0%B4" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>яд</span></a> <a href="https://mastodon.social/tags/%D0%9D%D0%BE%D0%B2%D0%B8%D1%87%D0%BE%D0%BA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Новичок</span></a> <a href="https://mastodon.social/tags/%D0%BE%D1%82%D1%80%D0%B0%D0%B2%D0%BB%D0%B5%D0%BD%D0%B8%D1%8F" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>отравления</span></a> <a href="https://mastodon.social/tags/%D0%B8%D1%81%D0%BF%D1%8B%D1%82%D0%B0%D0%BD%D0%B8%D1%8F" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>испытания</span></a> <a href="https://mastodon.social/tags/%D0%BE%D0%BF%D1%8B%D1%82%D1%8B" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>опыты</span></a> <a href="https://mastodon.social/tags/%D1%81%D0%BF%D0%B5%D1%86%D1%81%D0%BB%D1%83%D0%B6%D0%B1%D1%8B" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>спецслужбы</span></a> <a href="https://mastodon.social/tags/%D0%A0%D0%BE%D1%81%D1%81%D0%B8%D1%8F" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Россия</span></a> <a href="https://mastodon.social/tags/Russia" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Russia</span></a> <a href="https://mastodon.social/tags/ru" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ru</span></a> <a href="https://mastodon.social/tags/RussianFederation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RussianFederation</span></a> <a href="https://mastodon.social/tags/RF" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RF</span></a></p>
samir x<p>Is it just me or is every demo/overview of the <a href="https://infosec.exchange/tags/FlipperZero" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>FlipperZero</span></a> extremely unimpressive (especially those for a mainstream audience).</p><p>I regretfully watched one such video earlier and one of the features highlighted was the ability to copy TV remote signals :blobcatgoogly2: ...I get it was aimed at a non-technical audience but I literally had a watch that could do that when I was a kid and to this day grandparents around the world have universal remotes with this capability...</p><p>So I want to put it out there to the <a href="https://infosec.exchange/tags/infosec" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>infosec</span></a> community - where are the cool flipper zero <a href="https://infosec.exchange/tags/projects" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>projects</span></a>? And I don't mean installing <a href="https://infosec.exchange/tags/DOOM" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DOOM</span></a> or some other quirky play thing. I want to see legit <a href="https://infosec.exchange/tags/RF" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RF</span></a> <a href="https://infosec.exchange/tags/hacking" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hacking</span></a>, or at least using the <a href="https://infosec.exchange/tags/GPIO" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>GPIO</span></a>! <br><a href="https://infosec.exchange/tags/askfedi" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>askfedi</span></a> <a href="https://infosec.exchange/tags/askinfosec" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>askinfosec</span></a> <a href="https://infosec.exchange/tags/rfhacking" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>rfhacking</span></a> <a href="https://infosec.exchange/tags/pentesttools" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>pentesttools</span></a> <a href="https://infosec.exchange/tags/hackingtools" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>hackingtools</span></a></p>
Axel Werner<p><span class="h-card" translate="no"><a href="https://mastodon.social/@nixCraft" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>nixCraft</span></a></span> counter measures like that are in fact necessary if you have a "mandatory ISP router" that cannot be trusted (on the WLAN side of things). Packing it in tin foil would be better, but the router would die from overheating. So a fine metal mesh all around would be a cheap and feasible solution. Maybe adding some ferrite beads to all the in- and outgoing cables to block any RF 'leaking' through cabeling/shielding. <a href="https://mastodon.social/tags/RF" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RF</span></a> <a href="https://mastodon.social/tags/HD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>HD</span></a> <a href="https://mastodon.social/tags/WifiBLOCKER" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>WifiBLOCKER</span></a></p>
Emory<p>the more you learn about radio and spend time listening to hams or unlicensed operators freebanding, the more you want to know. same impulse as when i started learning <a href="https://soc.kvet.ch/tags/AI" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>AI</span></a>.</p><p>speaking of, there's a GGUF model for `phi2-electrical-engineer` that will write code for collecting <a href="https://soc.kvet.ch/tags/TDOA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>TDOA</span></a> data from a kiwiSDR which is nice cuz there isn't a ton of tooling i can find on analyzing or processing. tons of interest in AI for telecom but they're not showing their work yet.</p><p><a href="https://soc.kvet.ch/tags/rf" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>rf</span></a> <a href="https://soc.kvet.ch/tags/radio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>radio</span></a> <a href="https://soc.kvet.ch/tags/amateurradio" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>amateurradio</span></a> <a href="https://soc.kvet.ch/tags/cb" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>cb</span></a></p>
Francois Dion<p>Good thing I didn't go too low (nor too high) on the side, would have messed with my plan to relocate the power to the lower part of the case. Normally it is right smack in the middle. Needed to do that to move the power away from the reverb tank as much as possible.</p><p><a href="https://mastodon.online/tags/eurorack" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>eurorack</span></a> <a href="https://mastodon.online/tags/synth" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>synth</span></a> <a href="https://mastodon.online/tags/modular" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>modular</span></a> <a href="https://mastodon.online/tags/emf" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>emf</span></a> <a href="https://mastodon.online/tags/Rf" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Rf</span></a> <a href="https://mastodon.online/tags/reverb" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>reverb</span></a> <a href="https://mastodon.online/tags/electronics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>electronics</span></a> <a href="https://mastodon.online/tags/diy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>diy</span></a> <a href="https://mastodon.online/tags/maker" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>maker</span></a></p>
poleguy<p>I just ran across these pictures from my last <a href="https://mastodon.social/tags/shure" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>shure</span></a> prototype. This was an <a href="https://mastodon.social/tags/rf" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>rf</span></a> <a href="https://mastodon.social/tags/pll" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>pll</span></a> board. We needed a shield and I decided we could use <a href="https://mastodon.social/tags/kicad" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>kicad</span></a> and some brass sheet stock from <a href="https://mastodon.social/tags/mcmaster" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>mcmaster</span></a> to build a custom shield. I drew it in kicad on the am and had a shield cut on the <a href="https://mastodon.social/tags/laser" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>laser</span></a> <a href="https://mastodon.social/tags/lpkf" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>lpkf</span></a> machine in our <a href="https://mastodon.social/tags/Niles" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Niles</span></a> <a href="https://mastodon.social/tags/illinois" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>illinois</span></a> office by afternoon and I bent and soldered it straight away. <a href="https://mastodon.social/tags/electronics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>electronics</span></a> <a href="https://mastodon.social/tags/freecad" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>freecad</span></a></p>
CloseUpRussia<p>Верхняя Тойма, Архангельская область | Verkhnyaya Toima, Arkhangelsk region, 2019.<br>(c) Sergey Trapezin <br> <br><a href="https://mastodon.social/tags/closeuprussia" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>closeuprussia</span></a> <a href="https://mastodon.social/tags/sergeitrapezin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>sergeitrapezin</span></a> <a href="https://mastodon.social/tags/rf" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>rf</span></a> <a href="https://mastodon.social/tags/photography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>photography</span></a> <a href="https://mastodon.social/tags/photo" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>photo</span></a> <br> <br><span class="h-card" translate="no"><a href="https://mastodon.ml/@rf" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>rf</span></a></span></p>
beSpacific<p>This <a href="https://newsie.social/tags/Intelligence" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Intelligence</span></a> Community (IC)-drafted and coordinated Intelligence Community Assessment (ICA) addresses the IC’s evaluation of new information possibly related to anomalous <a href="https://newsie.social/tags/health" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>health</span></a> incidents (AHIs) since the publication of the ICA Updated Assessment of Anomalous Health Incidents, ICA 2023-02286, on 1 March 2023. <a href="https://www.dni.gov/index.php/newsroom/reports-publications/reports-publications-2025/4043-updated-assessment-ahi-dec2024" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">dni.gov/index.php/newsroom/rep</span><span class="invisible">orts-publications/reports-publications-2025/4043-updated-assessment-ahi-dec2024</span></a> pulsed <a href="https://newsie.social/tags/RF" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RF</span></a> <a href="https://newsie.social/tags/energy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>energy</span></a> <a href="https://newsie.social/tags/weapon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>weapon</span></a> or prototype device</p>
CloseUpRussia<p>Морозовск, Ростовская область | Morozovsk, Rostov region, 2021.<br>(c) Sergey Trapezin <br> <br><a href="https://mastodon.social/tags/closeuprussia" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>closeuprussia</span></a> <a href="https://mastodon.social/tags/sergeitrapezin" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>sergeitrapezin</span></a> <a href="https://mastodon.social/tags/rf" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>rf</span></a> <a href="https://mastodon.social/tags/photography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>photography</span></a> <a href="https://mastodon.social/tags/photo" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>photo</span></a> <br> <br><span class="h-card" translate="no"><a href="https://mastodon.ml/@rf" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>rf</span></a></span></p>
IT News<p>Making Sure Your Patch Cables Are Ready for RF Work - How do you know that your patch cables are good? For simple jumper wires, a multim... - <a href="https://hackaday.com/2025/01/08/making-sure-your-patch-cables-are-ready-for-rf-work/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">hackaday.com/2025/01/08/making</span><span class="invisible">-sure-your-patch-cables-are-ready-for-rf-work/</span></a> <a href="https://schleuss.online/tags/time" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>time</span></a>-domainreflectometry <a href="https://schleuss.online/tags/radiofrequency" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>radiofrequency</span></a> <a href="https://schleuss.online/tags/radiohacks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>radiohacks</span></a> <a href="https://schleuss.online/tags/patchcable" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>patchcable</span></a> <a href="https://schleuss.online/tags/coaxial" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>coaxial</span></a> <a href="https://schleuss.online/tags/testing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>testing</span></a> <a href="https://schleuss.online/tags/tdr" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>tdr</span></a> <a href="https://schleuss.online/tags/vna" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>vna</span></a> <a href="https://schleuss.online/tags/rf" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>rf</span></a></p>
Solarbird :flag_cascadia:<p><span class="h-card" translate="no"><a href="https://chaos.social/@ChuckMcManis" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>ChuckMcManis</span></a></span> <span class="h-card" translate="no"><a href="https://infosec.exchange/@RueNahcMohr" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>RueNahcMohr</span></a></span> Almost all. Everything except VCR, which inexplicably has its own actually separate input, no filtration, and is wired entirely separately other than ground.</p><p>Still think half the wavelength is making its way into the other switches through the ground, though. Because if you send signal in on VCR, and switch to other switches, you lose about 65% of the signal, but you _gain_ a substantial DC offset.</p><p>As designs go, it's kind of amazing.</p><p><a href="https://mastodon.murkworks.net/tags/electronics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>electronics</span></a> <a href="https://mastodon.murkworks.net/tags/rf" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>rf</span></a> <a href="https://mastodon.murkworks.net/tags/why" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>why</span></a></p>
Solarbird :flag_cascadia:<p>So the idea that this was only a DC phenomenon is kinda over. The filters hidden under the inputs in that big silver box are doing a _little_ filtering? That's why I think when the proper input is selected the signal level actually goes down a bit. But not very much. </p><p><a href="https://mastodon.murkworks.net/tags/electronics" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>electronics</span></a> <a href="https://mastodon.murkworks.net/tags/wtf" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>wtf</span></a> <a href="https://mastodon.murkworks.net/tags/rf" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>rf</span></a></p>
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