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In this episode, Etienne Nichols sits down with Staci Miller, a Human Factors and UX Strategist at GenUX, to demystify the role of human factors (HF) in the medical device regulatory pathway. Staci explains that many companies mistakenly treat HF as a "box-checking" exercise late in development, leading to costly submission delays or rejections when the FDA finds the documentation fails to tell a cohesive safety story.The conversation dives deep into the technical distinctions between a Use-Related Risk Analysis (URRA) and a User Failure Mode and Effects Analysis (uFMEA). Staci provides a framework for deciding which approach fits your product, emphasizing that while large conglomerates with post-market data may lean toward uFMEAs, startups and those with novel devices should prioritize the URRA to effectively map out user interactions without the crutch of existing market data.Finally, Staci addresses one of the most persistent myths in the industry: the idea that clinical trial data can replace human factors validation. She clarifies that while the two can overlap in specific, premeditated circumstances (such as complex implants like aortic valves), they serve entirely different masters—one focused on clinical efficacy and the other on the safety of the user interface across diverse environments.Key Timestamps04:12 – The common disconnect: Integrating Human Factors into ISO 14971 risk management.06:45 – URRA vs. uFMEA: How to choose based on your post-market data and predicate device status.10:30 – The "Definition of Done": Tracking the lifecycle of HF documentation from phase zero to market release.13:15 – System errors vs. Use errors: How to identify root causes during summative studies.18:50 – The "Clinical Trial Myth": Why efficacy data is not the same as usability validation.22:10 – Design Inputs vs. Design Outputs: The "Blueprint and the House" analogy for FDA submissions.25:40 – The impact of the "Use Environment": Testing for movement in ambulances and lighting in radiology suites.Quotes"The FDA doesn't put things out there just to have a good time... If they've made human factors a requirement and you're treating it as a 'suggestion,' you're giving yourself enough rope to hang yourself." - Staci Miller"People are obsessed with the product themselves—the design outputs. But the FDA wants to see the design inputs. They want to see the blueprints of how you built that house, not just the wallpaper." - Staci MillerTakeawaysPremeditation is Key: If you intend to use clinical trial data for HF validation, it must be planned in the protocol from the start; you cannot retroactively claim clinical data satisfies usability requirements.Map User Groups Early: Distinguish clearly between primary and secondary users. Bloating user sets without explaining how or why they engage with the device complicates your risk profile.Environment Matters: Documentation must account for the physical "10,000-foot view," including noise, lighting, and motion (e.g., an ambulance), as these are often where critical use errors occur.HF is Risk Management: Human factors should not live in a silo. It must align with the scales of harm (negligible to catastrophic) defined in ISO 14971 and work in tandem with Quality and Regulatory teams.ReferencesISO 14971: The global standard for the application of risk management to medical devices.FDA Human Factors Guidance: The primary document outlining expectations for usability testing and documentation.Etienne Nichols: LinkedIn ProfileMedTech 101: URRA vs. uFMEAThink of a uFMEA (User Failure Mode and Effects Analysis) like a car manufacturer looking at an old model to see why the brakes failed in the past—it relies on known data to fix specific parts.A URRA (Use-Related Risk Analysis) is like teaching someone to drive a brand-new type of vehicle (like a spaceship) for the first time. Since you don't have "crash data" yet, you have to carefully map out every single step the pilot takes and imagine every possible way they could push the wrong button in the heat of the moment.SponsorsGreenlight Guru: This episode is brought to you by Greenlight Guru, the only quality management platform designed specifically for the medical device industry. Whether you need to manage your QMS to stay compliant with ISO 14971 or streamline your clinical data through their EDC solutions, Greenlight Guru helps you move faster with less risk.Feedback Call-to-ActionWe want to hear from you! Do you have questions about your specific regulatory pathway or a topic you'd like us to cover? We provide personalized responses to every listener who reaches out. Send your thoughts, reviews, or suggestions to podcast@greenlight.guru.
Listener feedback, urgent AF ablation, AF ablation as a stroke-reducing therapy, implantable loop recorder accuracy, and HF management in the setting of serious disease are the topics John Mandrola, MD, discusses in this week's podcast. This podcast is intended for healthcare professionals only. To read a partial transcript or to comment, visit: https://www.medscape.com/twic I Urgent AF ablations Urgent vs Elective AF Ablation in the US https://www.jacc.org/doi/10.1016/j.jacep.2025.12.030 II AF Ablation Is Not Likely a Good Therapy for Stroke Reduction STABLED Trial https://jamanetwork.com/journals/jamaneurology/fullarticle/2845745 Catheter Ablation for AF Associated With Lower Incidence of Stroke https://doi.org/10.1093/eurheartj/ehw087 III Loop Recorders ILR Accuracy - Multicenter, Multidevice Comparison https://doi.org/10.1016/j.jacep.2025.12.039 IV Heart Failure Therapy when there is Cancer EMPATICC Trial https://doi.org/10.1093/eurheartj/ehaf705 You may also like: The Bob Harrington Show with the Stephen and Suzanne Weiss Dean of Weill Cornell Medicine, Robert A. Harrington, MD. https://www.medscape.com/author/bob-harrington Questions or feedback, please contact news@medscape.net
Hey folks, Alex here, let me catch you up! Most important news about this week came today, mid-show, OpenAI dropped GPT 5.4 Thinking (and 5.4 Pro), their latest flagship general model, less autistic than Codex 5.3, with 1M context, /fast mode and the ability to steet it mid-reasoning. We tested it live on the show, it's really a beast. Also, since last week, Anthropic said no to Department of War's ultimatum and it looks like they are being designated as supply chain risk, OpenAI swooped in to sign a deal with DoW and the internet went ballistic (Dario also had some .. choice words in a leaked memo!) On the Open Source front, the internet lost it's damn mind when a friend of the pod Junyang Lin, announced his departure from Qwen in a tweet, causing an uproar, and the CEO of Alibaba to intervene. Wolfram presented our new in-house wolfbench.ai and a lot more! P.S - We acknowledge the war in Iran, and wish a quick resolution, the safety of civilians on both sides. Yam had to run to the shelter multiple times during the show. ThursdAI - Highest signal weekly AI news show is a reader-supported publication. To receive new posts and support my work, consider becoming a free or paid subscriber.OpenAI drops GPT 5.4 Thinking and 5.4 Pro - heavy weight frontier models with 1M context, /fast mode, SOTA on many evalsOpenAI actually opened this week with another model drop, GPT 5.3-instant, which... we can honestly skip, it was fairly insignificant besides noting that this is the model that most free users use. It is supposedly “less cringe” (actual words OpenAI used). We all wondered when 5.4 will, and OpenAI once again proved that we named the show after the right day. Of course it drops on a ThursdAI. GPT 5.4 Thinking is OpenAI latest “General” model, which can still code, yes (they folded most of the Codex 5.3 coding breakthroughs in here) but it also shows an incredible 83% on GDPVal (12% over Codex), 47% on Frontier Math and an incredible ability to use computers and browsers with 82% on BrowseComp beating Claude 4.6 at lower prices than Sonnet! GPT 5.4 is also ... quite significantly improved at Frontend design? This landing page was created by GPT 5.4 (inside the Codex app, newly available on Windows) in a few minutes, clearly showing significant improvements in style. I built it also to compare prices, all the 3 flagship models are trying to catch up to Gemini in 1M context window, and it's important to note, that GPT 5.4 even at double the price after the 272K tokens cutoff is still.... cheaper than Opus 4.6. OpenAI is really going for broke here, specifically as many enterprises are adopting Anthropic at a faster and faster pace (it was reported that Anthropic is approaching 19B ARR this month, doubling from 8B just a few months ago!) Frontier math wizThe highlight from the 5.4 feedback came from a Polish mathematician Bartosz Naskręcki (@nasqret on X), who said GPT-5.4 solved a research-level FrontierMath problem he had been working on for roughly 20 years. He called it his “personal singularity,” and as overused as that word has become, I get why he said it. I've told you about this last week, we're on the cusp. Coding efficiencyThere's tons of metrics in this release, but I wanted to highlight this one, where it may seem on first glance that on SWE-bench Pro, this model is on par with the previous SOTA GPT 5.3 codex, but these dots here are thinking efforts. And a medium thinking effort, GPT 5.4 matches 5.3 on hard thinking! This is quite remarkable, as lower thinking efforts have less tokens, which means they are cheaper and faster ultimately! Fast mode arrives at OpenAI as wellI think this one is a direct “this worked for Anthropic, lets steal this”, OpenAI enabled /fast mode that.. burns the tokens at 2x the rate, and prioritizes your tokens at 1.5x the speed. So, essentially getting you responses faster (which was one of the main complains about GPT 5.3 Codex). I can't wait to bring the fast mode to OpenClaw with 5.4, which will absolutely come as OpenClaw is part of OpenAI now. There's also a really under-appreciated feature here that I think other labs are going to copy quickly: mid-thought steering. OpenAI now lets you interrupt the model while it's thinking and redirect it in real time in ChatGPT and iOS. This is a godsend if you're like me, sent a prompt, seeing the model go down the wrong path in thinking... and want to just.. steer it without stopping! Anthropic is now designated as supply-chain risk by DoWLast week I left you with a cliffhanger: Anthropic had received an ultimatum from the Department of War (previously the Department of Defense) to remove their two remaining restrictions on Claude — no autonomous kill chain without human intervention, and no surveillance of US citizens. Anthropic's response? “we cannot in good conscience acceede to their request” So much has happened since then; US President Trump said “I fired Anthropic” referring to his Truth Social post demanding intelligence agencies drop the use of Claude (which apparently was used in the war with Iran regardless); Sam Altman announced that OpenAI has agreed to DoW and will provide OpenAI models, causing a lot of people to cancel their OpenAI subscriptions, and later apologizing for the “rushed rollout”; Dario Amodei posted a very contentious internal memo that leaked, in which he name-called the presidency, Sam Altman and his motives, Palantir and their “safety theater”, for which he later apologizedHonestly this whole thing is giving me whiplash trying to follow, but here's the facts. Anthropic is now the first US company in history, being designated “supply chain risk” which means no government agency can use Claude, and neither can any company that does contracts with DoW. Anthropic says it's illegal and will challenge this in court , while reporting $19B in annual recurring revenue, nearly doubling since last 3 months, and very closely approaching OpenAI at $25B. Look, did I want to report on this stuff when I decided to cover AI? no... I wanted to tell you about cool models and capabilities, but the world is changing, and it's important to know that the US Government understands now that AI is inevitable, and I think this is just the first of many clashes between tech and government we'll see. We'll keep reporting on both. (but let me know in the comments if you'd prefer just model releases) OpenAI's GPT-5.3 Instant Gets Less Cringe, Google's Flash-Lite Gets Faster (X, Announcement)We also got two fast-model updates this week that are worth calling out because these are the models that often end up powering real product flows behind the scenes. As I wrote before, OpenAI's instant model is nothing to really mention, but it's worth mentioning that OpenAI seems to have an answer for every Gemini release. Gemini released Gemini Flash-lite this week, which boasts an incredible 363 tokens/s speed, which doing math at a very good level, 1M context and great scores compared to the instant/fast models like Haiku from Anthropic. Folks called out that this model is more expensive than the previous 2.5 Flash-lite. But with 86.9% on GPQA Diamond beating GPT-5 mini, and 76.8% MMMU-pro multimodal reasoning, this is definitely worth taking a look at for many agentic, super fast responses! For example, the heartbeat response in OpenClaw. Qwen 3.5 Small Models & The Departure of Junyang Lin (X, HF, HF, HF)Alibaba's Qwen team continued releasing their Qwen 3.5 family, this time with Qwen 3.5 Small, a series of models at 0.8B, 2B, 4B, and 9B parameters with native multimodal capabilities. The flagship 9B model is beating GPT-OSS-120B on multiple benchmarks, scoring 82.5 on MMLU-Pro and 81.7 on GPQA Diamond. These models can handle video, documents, and images natively, support up to 201 languages, and can process up to 262K tokens of context. And.. they are great! They are trending on HF right now. What's also trending is, tech lead for Qwen, a friend of the pod Junyang Lin, has posted a cryptic tweet that went viral with over 6M views. There was a lot of discussions on why he and other Qwen leads are stepping away, what's goig to happen with the future of OpenSource. The full picture seems to be, there are a lot of internal tensions and politics, with Junyang being one of the youngest P10 leaders in the Alibaba org.A Chinese website 36KR ( Kind of like a chinese techcrunch) reported that this matter went all the way up to Alibaba CEO, who is no co-leading the qwen team, and that this resignation was related to an internal dispute over resource allocation and team consolidation, not a firing. I'm sure Junyang is going to land somewhere incredible and just wanted to highlight just how much he did for the open source community, pushing Qwen relentlessly, supporting and working with a lot of inference providers (and almost becoming a co-host for ThursdAI with 9! appearances!) StepFun releases Step 3.5 Flash Base (X, HF, HF, Announcement, Arxiv)Speaking of Open Source, StepFun just broke through the noise with a new model, a 196B parameter sparse Mixture of Experts model activating just 11B parameters when ran. It has some great benchmarks, but the main thing is this: they are releasing the pretrained base weights, a midtrain checkpoint optimized for code and agents, the complete SteptronOSS training framework, AND promising to release their SFT data soon - all under Apache 2.0! Technically the model looks strong too, with multi-token prediction, 74.4% on SWE-bench verified bench (though, as we told you last week, it's.. no longer trusted) and full apache 2! This Week's Buzz: presenting Wolfbench.ai I'm so excited about this weeks “this weeks buzz”, Wolfram has been hard at work preparing and presenting a new framework to test out these models, and named it wolfbench.ai Wolfbench is our attempt to compare how the same model performs via different agentic harnesses like ClaudeCode, OpenClaw and Terminalbench's own Terminus. You can check out the website on wolfbench.com but the short of it is, a single number is not telling the full story. Wolf Bench breaks it into a four-metric framework: the average score across runs, the best single run, the ceiling (how many tasks can the model solve at least once across all runs), and the floor (how many tasks does it solve consistently across every single run). That last one is what I find most illuminating. Opus 4.6 might be able to solve 88% of Terminal Bench tasks on average, but only about 55% of tasks it solves every single time. Reliability matters enormously for agents, and benchmarks almost never surface this. If you want to run your own evals with the same config, reach out to Wolfram—he's open to community contributions. Wolfram has also already kicked off a Wolf Bench run on GPT-5.4 since we tested it live today, so stay tuned for those results.There's quite a few more releases we didn't have time to get into on the show given the GPT 5.4 drop, you'll find all those links in the show notes! Next week will mark 3 years since I've started talking about AI on the internet and created ThursdAI (It was March 14th, 2023, same day as GPT4 launched) and we'll have a little celebration, I do hope you join us live
Hello, and welcome to Sunday and QNEWS. I'm John VK4JPM, Secretary of the Darling Downs Radio Club, where lots is happening, starting at lunchtime today when we're heading to Picnic Point to do some more practical work on antennas. And you're invited. We heard a rumour that some of us are a bit scared of HF operation, and haven't had enough experience tuning random long wires. So... we figured that now is as good a time as any to go and learn a bit. Check out the website at ddrci.org.au and look for the calendar entry on the home page for 8 March - that's today. All the details for how to find us is in that article, but essentially, we'll be just over the hill from the Picnic Point cafe. Between 1200 and 1630, we're going to be lobbing wires, tuning, testing transmitters, talking a bit, testing some more... lot of "t" words, apparently. Between tests and QSOs, we'll have some coffee and a bit of BYO picnic lunch. Also, Picnic Point is a POTA location, so you can get on air and rack up a few contacts. If you let us know in advance, we might be able to run a licence assessment because everything will be in place. Send an email right now to education@ddrci.org.au so that we know you're interested. This is all in aid of preparation for the John Moyle Memorial Field Day, which is the major topic for our monthly club meeting tomorrow night. This is a natter and prep night, so we don't have a guest speaker. Just come along at 1900 at the Scout Hall in Newtown, find out what the club is doing, and have a relaxing cuppa and some timtams. Then we'll discuss our plans for the John Moyle field day, which is in only two weeks. The Zoom will be available online from 1900, so look for the link on the website and join us even if you can't be in the room. The John Moyle Memorial Field Day itself runs over a whole weekend, but traditionally our club enters for the first six-hour block on Saturday 22 March from 1100-1700. It's a whole-of-club activity, and we need your help and participation. Last year was fun, relaxing, educational, and successful. We need to defend our honour for this one, and you can read all about that on the home page too. So did you get all those dates down? Today at Picnic Point for a practical field antenna setup session; tomorrow, Monday 9 March, for the monthly Club Meeting where we'll talk about what we learned and do some planning for the John Moyle Field day, and Saturday 21 March for the actual field day exercise. Two other quick items. The club will be represented with a table at Redfest on 11 April, now only a month away. We're taking down some gear to sell, and if you can't attend but would like us to sell some gear on your behalf, send a note to secretary@ddrci.org.au and over the next few weeks, we'll work out how to get the gear transported. Lastly, have you checked out the 52-week Ham Radio Challenge at hamchallenge.org? This week's entry is simple and delightful: it's what the Germans call "Großreinemachen", which literally translates into English as "great magic cleaning"... Großreinemachen is the week 11 challenge, where you are tasked to tidy up all the cables in the shack - what a lovely idea. It's optional to unscramble the collection behind your desk, and the fearful spaghetti behind the TV. So much easier than whistling CW. Check the club website at ddrci.org.au for links, and send an email to secretary@ddrci.org.au if you have questions. Until next week, thanks for listening - for the Darling Downs Radio Club, I'm John VK4JPM. If it's Sunday morning, the club 2m net follows at 1000 AEST. 73s!
GB2RS News Sunday, the 8th of March 2026 The news headlines: RSGB members – secure your place on the Direct Digital Synthesiser programming workshop The latest edition of RadCom Plus has been published Listen out for groups that are active for British Science Week There's still time for RSGB members to book their place on the Direct Digital Synthesizer programming workshop, taking place in Blackpool on Saturday the 11th of April. If you would like a flavour of the workshop, watch our short video recorded at last year's RSGB Convention. You can hear from participants who enjoyed exploring new opportunities with Arduino and appreciated having a full six hours to see the project through from start to finish. Find the video on our YouTube channel and Facebook profile, and book the workshop via rsgb.org/practical-events The Winter 2025 / Spring 2026 edition of the RSGB's digital technical supplement, RadCom Plus, is now available via the RSGB app for mobile and web. RSGB members can enjoy four technical articles, including part five in the ‘Operating on the 30THz band' series and ‘Understanding Coded Orthogonal Frequency Division Multiplexing'. You'll also find articles on ‘Taming the end-fed half-wave antenna' and on the construction and use of a 4m solid state linear amplifier. Don't forget you can save articles in the app by bookmarking them. Within the mobile app, you can also download the edition to read whilst you're on the go. Members can also browse all the back issues of RadCom Plus, dating back to 2015, within the app. If you're not a member yet, you can read a sample edition of RadCom Plus. Go to rsgb.org/radcom to get started. British Science Week 2026 began last Friday, and a wide variety of amateur radio activity is taking place throughout the ten days. From kit building to Morse-a-thons, from skeds to radio direction finding, this is a fantastic showcase of amateur radio to wider audiences. There is still time to get involved in this national event that celebrates science, technology, engineering and maths by listening out for operators on the amateur bands. A number of groups will be active throughout the week, including the Royal Signals Museum Outreach team, who will be active on Wednesday, the 11th of March, as GB100RSM. The team will be running a day full of activities for 60 pupils from Milldown Academy in Blandford Forum, so listen out for them and exchange greetings. You can find details of other groups that will be on the air by going to rsgb.org/bsw and selecting ‘Events happening near you' from the right-hand menu. The Full and Direct-to-Full Exam Handouts, references EX309 and EX320, have been updated with immediate effect, so their 5MHz band plans now align with the main RSGB band plan, which was updated in January 2026. The new editions can be found at rsgb.org/exam-forms. The changes highlight that caution must be exercised to avoid out-of-band operation, as well as the fact that the band is for Full Licensees only. This follows Ofcom monitoring and warnings to errant operators. To encourage activity on the 2m band, the 145 Alive team has introduced 145 Alive 50. The trial period for this initiative runs until the 18th of April. The rules are simple. Call CQ on the calling channel and have at least one QSO per day on the 2m band. Record your contacts and send your log for 50 or more days, in ADIF format, to 145aliveuk@gmail.com. Electronic certificates will be supplied by the 145 Alive team to successful applicants. 145 Alive needs net controllers for its next event on Saturday, the 18th of April. Stations will be on the air from 12 am to 3 pm. The event predominantly features FM, but some SSB stations will also be operating. If you or your group would like to run a net, email 145aliveuk@gmail.com. Remember to include your name, callsign, location and Maidenhead locator. Today, the 8th, the Vintage and Military Amateur Radio Society is attending the Audiojumble event at K2 Crawley, Pease Pottage Hill, Crawley, RH11 9BQ. The Society's display and information stand will be of interest to those who enjoy historic equipment, including vacuum tubes. Everyone is welcome to drop by and will be made very welcome. Please send details of all your news and events to radcom@rsgb.org.uk. The deadline for submissions is 10 am on Thursdays before the Sunday broadcast each week. And now for details of rallies and events Today, the 8th, the Hack Green Military Surplus and Military Radio Hangar Sale is taking place at Hack Green Secret Nuclear Bunker, Nantwich, Cheshire CW5 8AL. The sale includes electronic equipment, amateur gear, components, military radio items and vehicle spares. For more information, visit hackgreen.co.uk On Sunday, the 15th of March, Ripon and District Amateur Radio Society Rally will take place at Great Ouseburn Village Hall, Lightmire Lane, Great Ouseburn, York YO26 9RL. The doors open for traders at 7.30 am and for the public at 10 am. Admission costs £5. Free parking and refreshments will be available. Tables are available at a cost of £10 each. Early booking is advised. For more information, email radars.rally@gmail.com Now the Special Event news To celebrate the centenary of the New Zealand Association of Radio Transmitters, which was formed on the 16th of August 1926, special callsign ZL100C will be active until August. QSL via the Bureau and Logbook of the World. Special callsign DB100FT is active throughout 2026 to celebrate the centenary of the Berlin Radio Tower. The 150m-high steel structure is one of the city's most iconic landmarks and has a prominent place in German radio broadcasting. Recently, the station was spotted on the HF bands using FT4 and FT8. QSL via the Bureau, or directly to DO2PZ. Now the DX news Jozef, ON6HX, is active again as YB9/ON6HX from Mataram on Lombok Island, OC-150, until Wednesday the 11th of March. The station is operating using CW, SSB, RTTY, FT8 and FT4. QSL via Logbook of the World, eQSL, or via Jozef's home call. Gerard, F2JD is active as HR5/F2JD from Copan, Honduras until Thursday, the 12th of March. He is operating using CW, SSB, FT8 and FT4 on the HF bands. QSL to F6AJA directly or via the Bureau. Now the contest news The RSGB March 144 and 432MHz Contest started at 1400UTC yesterday, the 7th, and runs until 1400UTC today, Sunday the 8th of March. Using all modes on the 2m and 70cm bands, the exchange is signal report, serial number and locator. The ARRL International DX Contest started at 0000UTC yesterday, the 7th, and runs until 2359UTC today, Sunday, the 8th of March. Using SSB on the 160 to 10m bands, where contests are permitted, the exchange is RST and transmit power. American stations also send their state, and Canadian stations send their province. On Tuesday, the 10th of March, the RSGB 432MHz FM Activity Contest runs from 1900 to 1955UTC. Using FM on the 70cm band, the exchange is signal report, serial number and locator. Also on Tuesday the 10th, the RSGB 432MHz UK Activity Contest runs from 2000 to 2230UTC. Using all modes on the 70cm band, the exchange is signal report, serial number and locator. On Wednesday, the 11th of March, the RSGB 432MHz FT8 Activity four-hour Contest runs from 1700 to 2100UTC. Using FT8 on the 70cm band, the exchange is a report and four-character locator. Also on Wednesday the 11th, the RSGB 432MHz FT8 Activity two-hour Contest runs from 1900 to 2100UTC. Using FT8 on the 70cm band, the exchange is a report and four-character locator. Stations entering the four-hour contest may also enter the two-hour contest. On Wednesday, the 11th of March, the RSGB 80m Club Championship runs from 2000 to 2130UTC. Using CW on the 80m band, the exchange is signal report and serial number. On Thursday, the 12th of March, the RSGB 50MHz UK Activity Contest runs from 2000 to 2230UTC. Using all modes on the 6m band, the exchange is signal report, serial number and locator. The Commonwealth Contest starts at 1000UTC on Saturday, the 14th of March and ends at 1000UTC on Sunday, the 15th of March. Using CW on the 80 to 10m bands, where contests are permitted, the exchange is signal report and serial number. On Sunday, the 15th of March, the UK Microwave Group Low Band Contest runs from 1000 to 1500UTC. Using all modes on 1.3 to 3.4GHz frequencies, the exchange is signal report, serial number and locator. Now the radio propagation report, compiled by G0KYA, G3YLA and G4BAO on Thursday, the 5th of March 2026. What a difference a week makes! In our last report, we mentioned that there were zero sunspots and a solar flux index of 130. This week has seen a turnaround with five active sunspot regions and a solar flux index of 144. HF propagation has been reasonable with openings up to 10m to various parts of the world. We have only seen M-class solar flares, although there have been around 40 of them in the past five days. We had a brief excursion in the Kp index when it went to 5 during one three-hour period, late on the 3rd of March. However, it soon recovered and has been at 2 or lower for the past two days at the time of writing. The effects of a small Earth-facing coronal hole started coming past the Earth on Friday, the 6th of March and is expected to be the source of a solar wind stream. According to NOAA and the Space Weather Prediction Centre, Active to Minor G1 geomagnetic storming will be possible today, the 8th of March. We have now seen the start of the 3Y0K Bouvet Island DXpedition, which is due to run until around the 17th of March. It has already been worked from the UK on bands from 40 to 12m. Bouvet is virtually due south from the UK, and the higher bands should be open from around 0700 to around 1900UTC. The 40 and 30m bands should open from around 2000 to 0400UTC. So, there are plenty of opportunities to work the station. Next week, the Space Weather Prediction Centre in the US forecasts that the solar flux index may be around 156 today, the 8th, but will then decline to be in the 120s or even 110s later in the week. We may have slightly unsettled geomagnetic conditions around the 10th to the 12th of March and again on the 14th and 15th of March, with an estimated Kp index of 4. In summary, HF conditions are not bad. Keep an eye on solarham.com for daily updates. And now the VHF and up propagation news from G3YLA and G4BAO The recent change of weather to introduce high pressure onto the scene provided some welcome enhanced tropo conditions in the last week. The March RSGB 144 and 432MHz Championship should still be able to benefit, except perhaps for the northwestern fringe of the UK, where the next Atlantic fronts will be making an intervention. It looks a little more problematic for the 432MHz UK Activity Contest on Tuesday, the 10th of March. The same is true for the RSGB 50MHz UK Activity Contest on Thursday, the 12th of March, as the low-pressure pattern returns and offers a chance of rain scatter for the microwave bands. The meteor scatter prospects are still driven by random activity, so as usual, a preference for the early hours of the morning is called for on this mode. It has been mentioned before that the Spring and Autumn are periods when auroras are more likely. This is known as the Russell-McPherron effect when the Earth's magnetic field is better coupled to the solar wind. So, keep monitoring the Kp index for signs of it going above 5. Then check the bands for fluttery signals, even on the LF bands. CW can be used as an early ‘heads up' for potential activity on the VHF bands. Lastly, thoughts about Sporadic-E should be kept in check for a while yet, since we are still very far away from the usual start of the season. For EME, Moon declination is negative and falling to a minimum next Thursday, meaning shortening Moon windows and lower peak elevation until then. Path losses are falling until apogee on Tuesday, the 10th of March. 144MHz Sky noise is moderate, rising to a high of more than 3000 Kelvin on Thursday and falling back by next weekend. And that's all from the propagation team this week.
This inaugural episode of the CardioNerds Pulmonary Embolism (PE) Series explores the evolution of acute PE care. Dr. Ibrahim Zahid, Dr. Dinu Balanescu, and Dr. Billy Joe Mullinax join guest expert Dr. Kenneth Rosenfield to discuss the shifting landscape of PE management. Pulmonary embolism (PE) remains a leading cause of cardiovascular mortality and a frequent diagnostic challenge, often masquerading as myocardial infarction or a benign illness. Over the past decade, PE care has evolved from anticoagulation-only strategies to nuanced, risk-stratified, multidisciplinary management. Modern approaches integrate hemodynamics, biomarkers, and advanced imaging to guide therapy, including catheter-directed interventions and large-bore thrombectomy. The Pulmonary Embolism Response Team (PERT) model addresses historical gaps by coordinating rapid, multispecialty decision-making and standardizing care pathways. The PERT Consortium further advances PE care through education, research, and the world's largest PE registry, while fostering leadership and research opportunities for trainees. Despite advances, long-term outcomes and post-PE syndromes remain important areas for future investigation. Audio editing by CardioNerds Academy intern, student doctor, Pace Wetstein. Enjoy this Circulation 2022 Paths to Discovery article to learn about the CardioNerds story, mission, and values. CardioNerds Pulmonary Embolism PageCardioNerds Episode PageCardioNerds AcademyCardionerds Healy Honor Roll CardioNerds Journal ClubSubscribe to The Heartbeat Newsletter!Check out CardioNerds SWAG!Become a CardioNerds Patron! Pearls PE is a “master masquerader”—maintain suspicion for atypical presentations like myocardial infarction, heart failure, flu, or anxiety. Multidisciplinary management mediated through pulmonary embolism response teams improves outcomes and standardizes care. Risk stratification integrates hemodynamics, biomarkers, and imaging. Advanced therapies have expanded beyond anticoagulation. Long‑term follow‑up and post‑PE syndrome need more research. Notes Notes: Notes drafted by Dr. Ibrahim Zahid. 1. How has the clinical approach to PE changed over the past decade? PE is the third leading cause of cardiovascular death and historically under‑recognized. Symptoms mimic MI, HF, asthma, syncope, and more.PE is a silent killer, and it should be recognized more as a cause of spontaneous cardiac arrest. Where life threatening disease like stroke which is owned by neurological specialists and MI is primarily managed by cardiac specialists, PE is an entity without a professional home. The PERT Consortium brings the specialties together for PE care. 2. Ten years ago, a 58-year-old patient with a large bilateral PE, RV dilation, and positive biomarkers might have been managed with anticoagulation and close observation alone. Today, with evolving—but still uneven—data on advanced therapies, PE care feels far more nuanced and highly dependent on where you practice. What are the major gaps in traditional PE management that clinicians should recognize, and what care pathways should they be aware of across different hospital systems? Care has shifted from anticoagulation‑only to multidisciplinary approaches like catheter directed thrombectomy. Risk‑based pathways and the use of CT angiogram has improved early recognition. Risk stratification tools must be used as tools for early recognition of intermediate risk PE. Untreated PE leads to chronic complications like chronic thromboembolic disease and chronic thromboembolic pulmonary hypertension, which requires long term clinic follow up. 3. What is the role of risk stratification tools such as PeSI, sPeSI scores, cardiac biomarkers, and imaging findings in PE, and how do they guide treatment decisions in real world practice? Integrate vitals (blood pressure and heart rate), biomarkers (troponin, pro-BNP), RV/LV ratio assessment, acid‑base status, and scores. Tools include PESI, sPESI, BOVA, HESTIA, FAST, Geneva, NEWS, shock index. Vitals, lactate, acid-base status, and tools like NEWS or shock index track clinical evolution. PESI/sPESI estimate 30-day mortality and help identify low-risk patients who may be candidates for early discharge or outpatient therapy. Clinical judgment matters—scores don't fully capture clot burden, trajectory, or bleeding risk. 4. How was the pulmonary embolism response team created, and since its creation, what evidence or outcome data became available to support the PERT model? Originated after a sentinel case at MGH: A young, pregnant woman in her 30s, who collapsed at home, underwent thrombectomy, and had to be on ECMO for a few days. The case brought cardiology, cardiac surgeons and critical care physicians together for planning and improvement in her health, which was rewarding. Thereby, it was decided to bring specialties involved in PE care together to create a response team. The name of the team, Pulmonary Embolism Response Team (PERT), was coined by Richard Channick in the first meeting. Posters were set up all over the hospital to call a centralized line when an acute PE is recognized A meeting was held to present the concept of putting together a consortium, with development of action items and a PERT database. Enabled rapid multidisciplinary input using early teleconferencing tools. 5. Given concerns about having too many ‘cooks in the kitchen' during the initial PE call—especially with rotating teams—how can institutions reconcile workflow complexity with standardized pathways in a way that meaningfully supports and justifies the added burden on frontline clinicians? Every hospital's PERT is different, catering to their needs and workflow At least two disciplines are needed to make a PERTData is currently being collected to guide further on how the workflow can be standardized Most importantly, the team brings in resources that were not available prior to PERT formation. 6. What are the main goals of the PERT consortium, and how does it support clinicians and institutions involved? To improve care and improve outcomes for patients with PE Expand education, refine algorithms, standardize care with Centers of Excellence. Maintain the largest PE registry for research and outcomes improvement. 7. Beyond global networking, shared learning from successful systems, and the pathway toward Center of Excellence designation, what additional benefits can clinicians and health systems gain by participating in the PERT Consortium? The ability to learn from other systems, the ability to share experiences. Allow people to develop their professional careers like leadership experience, becoming a member of the trainee council Initiate projects and receive funding for your ideas 8. For trainees interested in pulmonary embolism care, how can a trainee be a champion at their institution? Does PERT provide assistance and how can they really contribute meaningfully even before becoming a fellow/attending? Medical students and residents interested in PE should reach out to the consortium and the consortium will hook you up with the correct mentors who can nurture you along. Listen to the podcasts. Participate with your local PERT team PERT wants involvement of people who are social media savvy to help spread the word on PE. Top three take-away points from this episode Acute PE care has advanced and multiple treatment modalities for acute PE including catheter directed therapy, large bore thrombectomy, are becoming standard of care. Multidisciplinary models like PERT improve coordination and outcomes. Trainees play a vital role in advancing PE care through involvement, research, and education References Konstantinides SV, Meyer G, Becattini C, Bueno H, Geersing GJ, Harjola VP, Huisman MV, Humbert M, Jennings CS, Jiménez D, Kucher N, Lang IM, Lankeit M, Lorusso R, Mazzolai L, Meneveau N, Ní Áinle F, Prandoni P, Pruszczyk P, Righini M, Torbicki A, Van Belle E, Zamorano JL; ESC Scientific Document Group. 2019 ESC Guidelines for the diagnosis and management of acute pulmonary embolism developed in collaboration with the European Respiratory Society (ERS). Eur Heart J. 2020 Jan 21;41(4):543-603. doi: 10.1093/eurheartj/ehz405. PMID: 31504429. https://pubmed.ncbi.nlm.nih.gov/31504429/ Rosovsky R, Zhao K, Sista A, Rivera-Lebron B, Kabrhel C. Pulmonary embolism response teams: Purpose, evidence for efficacy, and future research directions. Res Pract Thromb Haemost. 2019 Jun 9;3(3):315-330. doi: 10.1002/rth2.12216. PMID: 31294318; PMCID: PMC6611377. https://pmc.ncbi.nlm.nih.gov/articles/PMC6611377/ Rosenfield K, Bowers TR, Barnett CF, Davis GA, Giri J, Horowitz JM, Huisman MV, Hunt BJ, Keeling B, Kline JA, Klok FA, Konstantinides SV, Lanno MT, Lookstein R, Moriarty JM, Ní Áinle F, Reed JL, Rosovsky RP, Royce SM, Secemsky EA, Sharp ASP, Sista AK, Smith RE, Wells P, Yang J, Whatley EM; Pulmonary Embolism Research Collaborative (PERC) Attendees. Standardized Data Elements for Patients With Acute Pulmonary Embolism: A Consensus Report From the Pulmonary Embolism Research Collaborative. Circulation. 2024 Oct;150(14):1140-1150. doi: 10.1161/CIRCULATIONAHA.124.067482. Epub 2024 Sep 12. PMID: 39263752; PMCID: PMC11698503. https://pubmed.ncbi.nlm.nih.gov/39263752/ Sharifi M, Awdisho A, Schroeder B, Jiménez J, Iyer P, Bay C. Retrospective comparison of ultrasound facilitated catheter-directed thrombolysis and systemically administered half-dose thrombolysis in treatment of pulmonary embolism. Vasc Med. 2019 Apr;24(2):103-109. doi: 10.1177/1358863X18824159. Epub 2019 Mar 5. PMID: 30834822. https://pubmed.ncbi.nlm.nih.gov/30834822/ Pandya V, Chandra AA, Scotti A, Assafin M, Schenone AL, Latib A, Slipczuk L, Khaliq A. Evolution of Pulmonary Embolism Response Teams in the United States: A Review of the Literature. J Clin Med. 2024 Jul 8;13(13):3984. doi: 10.3390/jcm13133984. PMID: 38999548; PMCID: PMC11242386. https://pubmed.ncbi.nlm.nih.gov/38999548/ Rivera-Lebron B., McDaniel M., Ahrar K., Alrifai A., Dudzinski D.M., Fanola C., Blais D., Janicke D., Melamed R., Mohrien K., et al. Diagnosis, Treatment and Follow Up of Acute Pulmonary Embolism: Consensus Practice from the PERT Consortium. Clin. Appl. Thromb. Hemost. 2019;25:1076029619853037. doi: 10.1177/1076029619853037.https://pubmed.ncbi.nlm.nih.gov/31185730/
Join me for an exciting Parks on the Air (POTA) activation using the compact Radioddity HF-009 portable HF vertical antenna paired with the powerful Stryker SR-955 10-meter radio!In this video:Radioddity HF-009 Antenna - https://www.radioddity.com/products/radioddity-hf-009?ref=JASONJOHNSTONSave $15 with code KC5HWBStryker SR-955HP - https://amzn.to/4kuE91xBecome a supporter of this podcast: https://www.spreaker.com/podcast/ham-radio-2-0--2042782/support.
Get up to 10 free meals and free breakfast for life from HelloFresh with my code HF-0449 https://www.filify.co/SHBn0 If you've been feeling like January was just the warm-up… you're not wrong.In this episode, I'm breaking down why spring is the real new year — astrologically, energetically, and spiritually — and how to use this season to finally get everything you want.We're talking about:✨Manifestation vs. delusion✨Law of attraction + discipline (the real combo)✨Getting out of your comfort zone✨Trusting your intuition (even the “mystical” vibes)✨Speaking what you want into existence✨Feminine energy + masculine drive✨Why presence and mindfulness change everything✨And yes… my thoughts on Love Story on Hulu and what it reveals about relationships, ego, and standardsThis is your reminder that you are powerful. Spring is about blooming, stepping into your confidence, and raising your standards — in your goals, your habits, and your relationships.If you're ready for a glow up that's actually grounded and aligned, this one's for you.Don't forget to subscribe and share with a baddie who's leveling up this season
In this episode, the first installment of a two-part series, Bert Jennings, owner of Jennings Materials Consulting in Spring, Texas, joins co-hosts Heather Allain and Marc Cook for a technical discussion on hydrofluoric acid (HF) and anhydrous hydrogen fluoride (AHF) service. Bert begins by outlining where HF is commonly used and addressing common industry tropes and misconceptions about how the fluid behaves in process environments. He explains what “anhydrous” truly means in practical terms, including how dry anhydrous hydrogen fluoride must be and why strict moisture control is essential. The conversation dives into the unique hazards associated with HF, particularly in carbon steel systems. Bert discusses hydrogen blistering, hydrogen-assisted stress corrosion cracking (HASCC), and the influence of hardness on material performance. He also examines how residual elements in carbon steel can affect corrosion resistance and cracking susceptibility, highlighting why small compositional differences can lead to significant performance impacts in HF service. The episode concludes with practical considerations for materials selection, inspection, and risk mitigation, setting the stage for deeper exploration in Part 2 of the series. This episode is sponsored by Tricor Metals and Webco Industries. Show Notes Related reference for MTI members: MS-4 Materials Selector for Hazardous Chemicals: Hydrogen Fluoride and Hydrofluoric Acid Non-members: Visit the MTI bookstore. Corrosion Chronicles is produced by Association Briefings.
CardioNerds (Dr. Jenna Skowronski [Heart Failure Council Chair], Dr. Shazli Khan, and Dr. Josh Longinow) are joined by renowned leaders in the field of AHFTC (Advanced Heart Failure and Transplant Cardiology) and mechanical circulatory support, Dr. Jeff Teuteberg and Dr. Mani Daneshmand to continue the discussion of advanced heart failure therapies by taking a deep dive into the world of durable LVADs (Left Ventricular Assist Devices). In this episode, we will review the history of ventricular assist devices, the basics of LVAD function, selection criteria for LVAD therapy, and surgical nuances of LVAD implantation. Audio Editing by CardioNerds intern, Joshua Khorsandi. Enjoy this Circulation 2022 Paths to Discovery article to learn about the CardioNerds story, mission, and values. CardioNerds Heart Success Series PageCardioNerds Episode PageCardioNerds AcademyCardionerds Healy Honor Roll CardioNerds Journal ClubSubscribe to The Heartbeat Newsletter!Check out CardioNerds SWAG!Become a CardioNerds Patron! Pearls There have been significant advances in the field of MCS/LVAD therapy since the first implanted LVAD in the 1960s, to the first FDA approved device in the early 2000's, to now the HM3 LVAD, with the most important change being a centrifugal flow/magnetically levitated design that led to minimized hemocompatibility-related adverse events (HRAE's) (MOMENTUM 3 trial comparing HM2 and HM3). The REMATCH trial in 2001 was a pivotal trial for LVAD therapy, demonstrating that in a population of patients with advanced HF (70% IV inotrope dependent), LVAD therapy significantly improved survival at both 1 and 2 years as compared to medical therapy alone. MOMENTUM 3 trial was a landmark trial for the HM3 device, showing that in a population of end stage HF patients (86% inotrope dependent, 32% INTERMACS 1-2, and 60% DT strategy), 5-year survival with HM3 was 58% and HM3 had lower HRAE's compared with HM2. There are both patient-specific factors and surgical considerations when it comes to candidacy for LVAD therapy. RV function prior to LVAD is a key determinant for success post-LVAD Many patients being considered for LVAD may not have robust RV function, however, predicting RV failure after LVAD is exceedingly difficult. In general, it doesn’t matter how bad the RV may look on imaging; we care more about the pre-LVAD hemodynamics (look at the PAPi and RA/wedge ratio). What happens in the OR may be the most important determinant of how the RV will do with the LVAD! Notes Notes drafted by Dr. Josh Longinow. 1. Historical background of heart pumps and LVADs LVAD Evolution FDA approval year 2001 2008 2012 2017 Pump HeartMate XVE HeartMate II Heartware HVAD HeartMate III Flow/Design Features Pulsatile Technology Continuous flow Axial design Continuous flow Centrifugal design Continuous flow Full MagLev + Centrifugal design The 1960's ushered in the first ‘LVADs', when the first air-powered ‘LVAD' was implanted. It kept the patient alive for four days before the patient expired. The first generation of LVADs were pulsatile pumps The first nationally recognized, FDA approved LVAD was the HeartMate XVE (late 1990s to early 2000s, REMATCH trial). The XVE pump used compressed air (pneumatically driven) to power the pump. Prior to the XVE, OHT was the standard of care for patients with advanced, end-stage heart failure. The second and third generations of LVADs were non-pulsatile, continuous flow devices and included the HVAD, HM2, and HM3 devices. MOMENTUM 3 was a landmark trial for the HM3 device, showing that in a population of sick patients with end stage HF (86% inotrope dependent, 32% INTERMACS 1-2, and 60% DT strategy), 5-year survival with HM3 was 58% and HM3 had lower HRAE's compared with HM2. The only pump that is currently FDA approved for implant is the HM3, although other pumps are in clinical trials (BrioVAD system, INNOVATE Trial). 2. What are LVADs, and how do they work? In simplest terms, the LVAD is a heart pump comprised of several key mechanistic components: Inflow cannula Mechanical pump Outflow cannula Driveline Controller/Power source The HM3 differs from its predecessors (HM2 and HVAD) in several key ways; HM3 is placed intrapericardial whereas the HM2 was placed pre-peritoneal. Perhaps most importantly, the HM3 is a fully magnetically levitated, centrifugal flow pump, whereas the HM2 is an axial flow device. Axial flow pumps are not magnetically levitated, leading to more friction produced between the ruby bearing's contact with the pump rotors, and higher rates of hemocompatibility related adverse events (HRAEs, i.e. pump thrombosis) and the HM2 was ultimately discontinued in favor of the HM3 (MOMENTUM 3 trial). 3. What do the terms ‘Destination Therapy' (DT) or ‘Bridge to Transplant' (BTT) mean when it comes to LVADs? When LVADs first came on the stage, EVERYONE was a BTT; these early pumps weren't designed for long term use (I.e. REMATCH Trial, Heartmate XVE) Destination therapy means the LVAD was placed in leu of transplant because there are contraindications to transplant REMATCH trial brought about the concept of “Destination therapy”, comparing outcomes in patients (with contraindications for transplant) who received an LVAD vs optimal medical therapy Bridge to transplant means we are placing the LVAD in a patient who may not be a transplant candidate at this moment in time (is too sick, or conversely, not sick enough), but may be down the line Bridge to recovery is another term used when the LVAD is being placed for a patient we think may have a recoverable cardiomyopathy 4. What are some factors we should consider when assessing a patient’s candidacy for LVAD, in general, and from a surgical perspective? Patient factors Older age might push us towards thinking LVAD rather than transplant In general, age > 70 is the cutoff for transplant, but this is not a hard cut off and varies institution to institution In general, think about things that help predict recovery after a major surgery; Frailty and Nutritional status are important, we try to optimize these prior to LVAD implant Right ventricular function remains the Achilles heel of LV support We know that needing temporary RV support post LVAD puts you on a different survival curve than patients who don’t need RVAD support Studies have not been able to successfully predict who will develop RV failure after LVAD implantation What happens in the time between when the patient goes to the OR and when they get back to the ICU is an important determinant who might develop RV failure post LVAD Surgical techniques such as implanting the HM3 in the intra-thoracic cavity, rather than intra-pericardial may help maintain LV/RV geometry to help optimize the RV post LVAD Surgical considerations for LVAD candidacy Small, hypertrophied LV: HM3 inflow cannula is small, but small hypertrophied ventricles tend towards chamber collapse during systole causing suction, needing to run slower with lower flow rates Chest size/diameter: pumps have gotten so small now, that for adults, these have become less of a consideration BMI: low BMI used to be more of a concern with the older pumps due to where they were placed, and the relative size of the pump itself, not so much now with the smaller HM 3 pumps Calcified LV apex: would increase risk of stroke, bleeding Driveline tunneling becomes a concern in the super obese population, higher risk for driveline infections (might tunnel these driveline's shorter, and to a less fatty region of the abdomen, could even tunnel out the thoracic cavity in the super obese to limit skin motion) 5. Is there a role for MCS (i.e. temporary LVAD such as Impella) in pre-habilitation of patients prior to LVAD surgery? The theory of being able to improve systemic perfusion, decongest the organs, and make the patient feel better prior to surgery makes sense, but becomes problematic due to the lack of a hard end point/time for prehabilitation which might risk delays in surgery More likely that it can lead to delay in the surgery, with less-than-optimal benefit; you don't want to prolong the wait for surgery and increase the risk for complications prior to surgery An Impella 5.5 is currently FDA approved for 2 weeks of support, not 2 months so timing is important to keep in mind It’s unlikely that you will take a patient and convert them from a malnourished, cachectic person in 2 weeks’ time 6. Is there a role for LVAD therapy in the younger patient population? Should we be thinking of LVAD up front for these patients, with the goal of transplanting down the line? Recovery may be more likely in certain populations, particularly younger females with smaller LV's; in those populations, perhaps bridge to recovery should be the focus, optimizing them on GDMT etc. The replacement of transplant, with MCS (LVAD) in young patients has become a topic of discussion, because these pumps have become better and better, with the thinking that an LVAD could bridge a patient for 10 years or so, and they could get a transplant later It is still a big unknown, but several concerns exist Patients who get LVADs might end up with complications that become contraindication to transplant down the line (stroke, sensitization etc) Patients and providers are more hesitant because of the more recent iteration for the UNOS criteria for OHT listing which no longer gives patients with an uncomplicated LVAD higher priority, and therefore they could end up waiting a longer time for a heart after undergoing LVAD References Rose EA, Gelijns AC, Moskowitz AJ, et al. Long-term use of a left ventricular assist device for end-stage heart failure. N Engl J Med. 2001;345(20):1435-1443. doi:10.1056/NEJMoa012175 Mehra MR, Uriel N, Naka Y, et al. A Fully Magnetically Levitated Left Ventricular Assist Device – Final Report. N Engl J Med. 2019;380(17):1618-1627. doi:10.1056/NEJMoa1900486 Mancini D, Colombo PC. Left Ventricular Assist Devices: A Rapidly Evolving Alternative to Transplant. J Am Coll Cardiol. 2015;65(23):2542-2555. doi:10.1016/j.jacc.2015.04.039 Mehra MR, Goldstein DJ, Cleveland JC, et al. Five-Year Outcomes in Patients With Fully Magnetically Levitated vs Axial-Flow Left Ventricular Assist Devices in the MOMENTUM 3 Randomized Trial. JAMA. 2022;328(12):1233-1242. doi:10.1001/jama.2022.16197 Rose EA, Moskowitz AJ, Packer M, et al. The REMATCH trial: rationale, design, and end points. Randomized Evaluation of Mechanical Assistance for the Treatment of Congestive Heart Failure. Ann Thorac Surg. 1999;67(3):723-730. doi:10.1016/s0003-4975(99)00042-9 Kittleson MM, Shah P, Lala A, et al. INTERMACS profiles and outcomes of ambulatory advanced heart failure patients: A report from the REVIVAL Registry. J Heart Lung Transplant. 2020;39(1):16-26. doi:10.1016/j.healun.2019.08.017 Mehra MR, Netuka I, Uriel N, et al. Aspirin and Hemocompatibility Events With a Left Ventricular Assist Device in Advanced Heart Failure: The ARIES-HM3 Randomized Clinical Trial. JAMA. 2023;330(22):2171-2181. doi:10.1001/jama.2023.23204 Mehra MR, Nayak A, Morris AA, et al. Prediction of Survival After Implantation of a Fully Magnetically Levitated Left Ventricular Assist Device. JACC Heart Fail. 2022;10(12):948-959. doi:10.1016/j.jchf.2022.08.002 Bhardwaj A, Salas de Armas IA, Bergeron A, et al. Prehabilitation Maximizing Functional Mobility in Patients With Cardiogenic Shock Supported on Axillary Impella. ASAIO J. 2024;70(8):661-666. doi:10.1097/MAT.0000000000002170
Hey, it's Alex, let me tell you why I think this week is an inflection point.Just this week: Everyone is launching autonomous agents or features inspired by OpenClaw (Devin 2.2, Cursor, Claude Cowork, Microsoft, Perplexity and Nous announced theirs), METR and ArcAGI 2,3 benchmarks are getting saturated, 1 person companies nearing 1M ARR within months of operation by running AI agents 24/7 (we chatted with one of them on the show today, live as he broke $700K ARR barrier) and the US Department of War gives Anthropic an ultimatum to remove nearly all restrictions on Claude for war and Anthropic says NO. I've been covering AI for 3 years every week, and this week feels, different. So if we are nearing the singularity, let me at least keep you up to date
durée : 00:00:52 - En Dordogne le Grand Périgueux propose deux postes H/F au service Petite Enfance - En Dordogne le Grand Périgueux propose deux postes H/F au service Petite Enfance pour une prise de poste immédiate, dans l'une des 16 crèches de l'agglomération. Vous aimez ce podcast ? Pour écouter tous les autres épisodes sans limite, rendez-vous sur Radio France.
GB2RS News Sunday the 1st of March 2026 The news headlines: British Science Week starts on Friday – what are your plans? Listen out for the RSGB President operating as GB5CC Make the most of the RSGB National Radio Centre's extended summer opening hours British Science Week starts this Friday, the 6th of March, and finishes on Sunday, the 15th of March. The annual event celebrates science, technology, engineering and maths, and is the perfect opportunity to share amateur radio with new audiences. A number of clubs are hosting events that are open to the public, ranging from a practical skills night with Chelmsford Amateur Radio Society through to the Lincolnshire Portable Radio Group, which is delivering a youth event with the International Bomber Command Centre. Several groups and organisations are looking to arrange skeds during the week. These include Crowthorne and Wokingham Without Men's Shed with Bracknell Amateur Radio Club, and also South Derbyshire and Ashby Woulds Amateur Radio Group. Get involved with British Science Week by attending an event, or by arranging a sked with one of these groups. Find out more by going to rsgb.org/bsw and selecting ‘Events happening near you' from the right-hand menu. If you haven't planned anything yet, you can get involved by doing the RSGB ‘Riding the wave' activity with your friends and family. Find this worksheet, along with numerous other ideas and resources, by going to the RSGB British Science Week web page. The President of the RSGB, Bob Beebe, GU4YOX, will be operating as GB5CC for this year's Commonwealth Contest, which takes place on the 14th and 15th of March. He will be doing so in memory of former RSGB President, Bob Whelan, G3PJT, who sadly became a Silent Key at the end of last year. Bob Beebe looks forward to making contacts across the Commonwealth and sharing time on the amateur bands to reflect the fellowship, tradition and sense of community that Bob Whelan valued so deeply. Find out more about the contest at rsgbcc.org/hf If you are planning a visit to the RSGB National Radio Centre, you'll be pleased to hear that, in line with Bletchley Park's summer opening hours, the Centre is now open for an extra hour and will close at 5 pm each day. Remember that RSGB members can download a free entry voucher for Bletchley Park at rsgb.org/bpvoucher Did you know that each RSGB region has a Facebook page that has a focus on regional amateur radio communities? The majority of the posts are from clubs, individual licensees and event organisers from that area, and the content is moderated by members of the RSGB Regional Team. Some RSGB news content is also shared that will be of interest to amateurs in that particular region. These pages can also be used to ask for help about any aspect of amateur radio. Whether you're an individual or a club, make use of this resource! You can find the pages on Facebook – go to facebook.com/groups/rsgbregion1 for Region 1 or substitute the region number for your local region. The 235 Alive DMR net takes place on TGIF Talk Group 235 on Mondays and Fridays from 7.30 pm. Everyone is welcome. For details of how to connect, visit the 235 Alive Facebook page or 235alive.com International Women's Day YL Parks on the Air Party takes place annually on the 8th of March. This isn't a contest. The main goal is to encourage women to get out, get on the air, and be more active in amateur radio. For more information, visit the International Women's Day YL POTA Party Facebook page. SOS Radio Week is an annual event that takes place throughout the month of May to celebrate the work of the volunteers from the Royal National Lifeboat Institution, Independent Lifeboats and National Coastwatch Stations around the British Isles. Registration is now open via sosradioweek.org.uk Please send details of all your news and events to radcom@rsgb.org.uk. The deadline for submissions is 10 am on Thursdays before the Sunday broadcast each week. And now for details of rallies and events Today, the 1st of March, the Exeter Radio Rally is taking place at The Kenn Centre, EX6 7UE. The rally includes a bring-and-buy area, disabled facilities, catering and free car parking. The entry fee is £3. Traders can gain entry from 8 am, and the doors open to the public at 10 am. For more information, email Bill, G7AKJ via billwrench213@btinternet.com On Sunday, the 22nd of March, Callington Radio and Electronics Rally will be held in the Town Hall, New Road, Callington, Cornwall, PL17 7BE. The doors will be open to the public from 10 am until 1 pm. Entry is £2 each with no charge for those under the age of 16. A comprehensive selection of traders, clubs and societies from the Southwest will be present along with a bring-and-buy stall and the usual catering service. Pre-booking is essential, so contact Alastair, M0KRR, via alastair.kerr1@btinternet.com or by phone on 01503 262 755 with your requirements as soon as possible. Visit callingtonradiosociety.org.uk for more information. Now the Special Event news Experimental Danish Radio Amateurs are celebrating the centenary of Denmark's first licensed amateurs. To mark the occasion, special callsign OZ100OZ will be on the air from 0000UTC on the 1st of March until 2359UTC on the 8th of March. For more information, including details of an award that is available for working the station, visit QRZ.com Special callsign ZL100C is active to celebrate the centenary of the New Zealand Association of Radio Transmitters, which was formed on the 16th of August 1926. The callsign will be active until the 6th of August 2026. QSL via the Bureau and Logbook of the World. For more information, visit QRZ.com Now the DX news Arno, DL1CW, is active as 9G5ZZ from Ghana until Tuesday, the 3rd of March. He operates on the 80 to 6m bands mainly using CW. QSL via Logbook of the World, the Bureau and Arno's home call. Andre, PD1DRE, is active as PJ2/PD1DRE from Curacao, SA-099, until Wednesday, the 4th of March. He operates using FT4, FT8 and SSB on the HF bands. QSL via eQSL. Now the contest news Today, the 1st of March, the Worked All Britain 3.5MHz Phone Contest runs from 1800 to 2200 UTC. Using SSB on the 80m band, the exchange is signal report, serial number and your Worked All Britain area. Tomorrow, the 2nd of March, the RSGB 80m Club Championship runs from 2000 to 2130 UTC. Using PSK63 and RTTY on the 80m band, the exchange is signal report and signal number. On Tuesday, the 3rd of March, the RSGB 144MHz FM Activity Contest runs from 1900 to 1955 UTC. Using FM on the 2m band, the exchange is signal report, serial number and locator. Also on Tuesday, the 3rd of March, the RSGB UK Activity Contest runs from 2000 to 2230UTC. Using all modes on the 2m band, the exchange is signal report, serial number and locator. On Wednesday, the 4th of March, the RSGB 144MHz FT8 Activity four-hour Contest runs from 1700 to 2100UTC. Using FT8 on the 2m band, the exchange is a report and four-character locator. Also on Wednesday the 4th, the RSGB 144MHz FT8 Activity two-hour Contest runs from 1900 to 2100UTC. Using FT8 on the 2m band, the exchange is a report and four-character locator. Stations entering the four-hour contest may also enter the two-hour contest. On Wednesday, the 4th of March, the UK and Ireland Contest Club 80m Contest runs from 2000 to 2100UTC. Using SSB on the 80m band, the exchange is your six-character locator. The RSGB March 144 and 432 MHz Contest starts at 1400 UTC on Saturday, the 7th, and runs until 1400 UTC on Sunday, the 8th of March. Using all modes on the 2m and 70cm bands, the exchange is signal report, serial number and locator. The ARRL International DX Contest starts at 0000 UTC on Saturday, the 7th and runs until 2359 UTC on Sunday, the 8th of March. Using SSB on the 160 to 10m bands, where contests are permitted, the exchange is RST and Tx power. American stations also send their state, and Canadian stations send their province. Now the radio propagation report, compiled by G0KYA, G3YLA and G4BAO on Thursday the 26th of February 2026 We have just had a period of zero sunspots – the first time since June 2022. However, don't worry. This may be a sign of things to come, but this zero-spot period was short-lived. There are now signs of sunspots appearing over the Sun's eastern limb with old region 4366, last seen on the 11th of February, making its return. It is now renamed ‘active region 4378'. This is helping to boost the solar flux index, which stood at 125 on Thursday, the 26th of February. This is a long way off the usual solar flux index lows we experience at sunspot minimum, when it can be as low as 66 to 70. As we are now entering March and, with the hours of daylight increasing, we are seeing a change in HF propagation. The Spring equinox is a time for good North-South propagation, especially on the higher HF bands, although we may see the 10m band tailing off a little as we head towards summer. For the best overall DX HF propagation, head to 21MHz or higher, where you may get maximum global coverage. Propagation has been reasonable, but a high-speed solar wind stream from a coronal hole pushed the Kp index to 4 for long periods. This has not helped HF propagation, although its effects are not as bad as a Kp index of 6 or higher. DXpeditions to be worked this week include Bouvet Island, 3Y0K; Guinea Bissau, J51A; and the final days of Desecheo Island, KP5/NP3VI, which is due to end around the 3rd of March. Lubo, OM5ZW and Laco, OM4WM, will also be active from Thulusdhoo Island in the Maldives as 8Q7ZW from the 28th of February until the 12th of March 2026. Next week, the Space Weather Prediction Centre predicts that the solar flux index will remain in the 120 to 130 range. The solar wind model predicts that a cloud of plasma may hit Earth today, the 1st of March, so watch out for an increased Kp index. Otherwise, the first half of the coming week may be quiet, geomagnetically. However, the Kp index is predicted to rise to 4 on the 5th and 6th of March. And now the VHF and up propagation news from G3YLA and G4BAO The early part of last week saw brief 50MHz FT8 spots of the J51A DXpedition to Guinea-Bissau in the southern part of the UK. As with TZ1CE last week, stations much further south benefited from the best propagation. As of Thursday, the 26th of February, Clublog showed no UK stations in their log yet. Earlier in the week, the station was an easy catch using FT8 on all the lower bands. The current spell of very unsettled weather will last into the early part of the coming week. Thereafter, it seems likely that high pressure will start to build over the country, possibly with another weak front after mid-week. This may soon be followed by another high before the end of the week. In terms of radio propagation, although some further rain scatter is probable at first, as we head into the coming week, there is every chance of tropo becoming a mode of choice. It's important to remember that not all highs are equal and, although they all tend to produce a strong temperature inversion, they may not be good for tropo if the air near the surface is too dry. Ideally, we need to see some misty low cloud or early morning fog trapped under the inversion for the better-quality lifts. This is because a change in moisture across the top of the inversion produces the biggest change to the refractive index. Other modes to consider, though not too seriously, are aurora after the recent coronal hole stream. The indication you are looking for is a high value Kp index, say 5 or greater, up to the maximum of 9. With meteor scatter, we are in a long gap in shower activity until the Lyrids in late April, so relying on random meteor activity is the best we can expect. Lastly, the prospects for Sporadic-E are not necessarily zero but are unlikely to be too exciting in this part of the year. The main summer season is normally considered to run from late April to mid-September. In the interim, the occasional burst of activity is possible, but probably limited to the 10 or 6m bands. For EME, Moon declination has started to fall again, going negative on Wednesday, the 4th of March. This means shortening Moon windows and lower peak elevation. Path losses are rising again after perigee. 144MHz sky noise is low throughout the coming week. And that's all from the propagation team this week.
Radikale Venstre kommer nu med det, de kalder et "hovedkrav" til de regeringsforhandlinger, der ligger på den anden side af et kommende folketingsvalg. Helt konkret er Radikales krav "et massivt økonomisk løft af folkeskolen i milliardklassen, en genforhandling af SVM-regeringens et år gamle reform af ungdomsuddannelserne, der lukker HF og 10. klasse, samt en ny universitetsreform med flere studiepladser." Partiets politiske leder, Martin Lidegaard, har dog svært ved at sætte ord på, hvad der sker, hvis de her krav ikke imødekommes - og han understreger, at der i hans verden ikke findes såkaldte ultimative krav. Værter: Nicolai Dandanell og Anne Phillipsen.See omnystudio.com/listener for privacy information.
Get up to 10 free meals & free breakfast for lifeee from HelloFresh with my code HF-0449 https://www.filify.co/SHBn0 !!!The winter arc was cute… but it's almosttt officially step our swag up spring.In this episode, I'm breaking down what “swag” actually means (hint: it's confidence, clarity, and being solution-oriented) and why so many of us feel stuck, bored, or low-energy when we're not actively working toward something meaningful.We talk about:✨why confidence comes from having a mission✨how your comfort zone is secretly holding you back✨what elite athletes understand about mindset and perseverance✨why most people live in a victim mindset (and how to shift out of it)✨being solution-oriented instead of reactive✨mindfulness, discipline, and leveling up your daily habits✨spring cleaning your space (and your energy)I share lessons from reading Eleven Rings by Phil Jackson, watching The Last Dance, and diving into that relentless, high-performance mindset, but applying it to real life, self-growth, and becoming your most confident self.This is your reminder that:every day mattersevery moment is an opportunityand swag is built through small daily decisions fr frLet's step our swag up this spring yallEnjoy & dont forget to tweet/ig story me a screenshot of you listening!Eleven Rings by Phil Jackson https://amzn.to/3MZRhPURelentless by Tim Grover https://amzn.to/4azkTg4W1nner by Tim Grover https://amzn.to/4azkTg4MY NEW WEBSITE!! Shop merch, sign up for my newsletter, book a coffee chat, & more: http://stellaraeherself.comGet $1000 off the health coach certification program I'm doing with promo code STELLACOACHING https://www.shareasale.com/u.cfm?d=1281553&m=96296&u=1030263I edit using Riverside! https://www.riverside.fm/?utm_campaign=campaign_5&utm_medium=affiliate&utm_source=rewardful&via=stella-holtshop my new glo up merch!! https://stellarae.myspreadshop.com/instagram http://instagram.com/stellaraepodcastlisten to and/or support the podcast: https://anchor.fm/stella-raetiktok: http://tiktok.com/@stellaraeherselftwitter: http://twitter.com/stellaraegoodreads: https://www.goodreads.com/user/show/10449999-stella-raemy fav books/products/health: https://www.amazon.com/shop/stellaraemy current filming set up:camera: https://amzn.to/4cEQiLOmicrophone: https://amzn.to/3Z2A5gctripod: https://amzn.to/3AEmxgKring light: https://amzn.to/3XxZrShbox lights: https://amzn.to/4e1Q1Ubportable light for phone: https://amzn.to/3XxZspjjoin my patreon for ad-free episodes, early access, merch discounts, behind the scenes, & more! https://www.patreon.com/stellaraepodlisten on spotify: https://open.spotify.com/show/2DMbeh7EqiqgROIjvW0sI9listen on apple podcasts: https://podcasts.apple.com/us/podcast/the-stella-rae-podcast/id1255618182#StellaRaePodcast
durée : 00:00:49 - En Dordogne plusieurs offres H/F sont à pourvoir dans différents corps de métiers avec France Travail - Avec le soutien de France Travail, plusieurs offres H/F sont à pourvoir à Limeyrat, à Saint-Astier et au Buisson-de-Cadouin. Vous aimez ce podcast ? Pour écouter tous les autres épisodes sans limite, rendez-vous sur Radio France.
Esta semana en CQ en Frecuencia hablamos de dos temas que han marcado la actualidad reciente en el mundo de la radioafición. Crónica desde dentro del ARRL International DX Contest en CW Viajamos hasta la sede de la Asociación de Radioaficionados de Molins de Rei para conocer cómo vivieron el concurso de telegrafía más importante del calendario internacional. Operadores noveles y experimentados compartiendo estación, estrategias de RUN y búsqueda, técnicas avanzadas como el 2BSIQ y un objetivo común: cruzar el Atlántico durante 48 horas de alta intensidad. 500 contactos y 163.000 puntos después, analizamos no solo los números, sino también el valor formativo y humano de los concursos. FT2: el “terremoto” digital de la semana Damos mi opinión personal sobre la irrupción del nuevo modo digital FT2. Un sistema que reduce los ciclos de transmisión a 3,8 segundos, pero que lo hace sacrificando sensibilidad y ancho de banda respecto a FT8. ¿Es una evolución lógica? ¿Es el “TikTok” de los modos digitales? ¿Estamos ganando velocidad a costa de perder señales débiles y QRP? Reflexión técnica y personal sobre lo que supone realmente este nuevo modo para quienes disfrutamos del DX en HF. Rincón Diexista – Informe de Radioescucha de la AER Cerramos el episodio con el tradicional informe de la Asociación Española de Radioescucha, con las últimas novedades para los amantes de la onda corta y la escucha internacional. Un episodio que mezcla concurso, tecnología digital y radioescucha… con opinión, análisis y pasión por la radio. ¿Nos apoyas para que podamos seguir haciendo este podcast? Puedes apoyarnos en QRP con 1,99€ al mes o un poco más de potencia en QRO, con 5,99€ al mes aquí: https://cqenfrecuencia.com/apoyar/ NOTAS DEL EPISODIO - ARRL https://www.arrl.org/contest-calendar - Características del FT2 y enlaces de descarga https://hampass.com/ft2 - Web de la AER https://aer.org.es/ Envía tus preguntas, propuestas de temas o lo que quieras: https://cqenfrecuencia.com/contacto/ O en nuestro canal de Telegram: https://t.me/cqenfrecuencia Y no olvidéis visitar nuestra web: https://cqenfrecuencia.com
durée : 00:00:48 - En Dordogne, un spécialiste de la pose de clôtures et un menuisier poseur sont recrutés - En Dordogne, plusieurs postes H/F sont à pourvoir, on recrute un spécialiste de la pose de clôtures et France Travail recherche un menuisier poseur. Vous aimez ce podcast ? Pour écouter tous les autres épisodes sans limite, rendez-vous sur Radio France.
durée : 00:00:37 - Le château d'Hautefort recrute un chef de partie H/F pour son restaurant - En Dordogne, le château d'Hautefort recrute plusieurs profils de poste H/F dont un chef de partie pour son restaurant ainsi qu'un guide conférencier Vous aimez ce podcast ? Pour écouter tous les autres épisodes sans limite, rendez-vous sur Radio France.
Hello and Welcome to the DX Corner for yourweekly Dose of DX. I'm Bill, AJ8B.The following DX information comes from Bernie, W3UR, editor of the DailyDX, the WeeklyDX, and the How's DX column in QST. If you would like a free 2-week trial of the DailyDX, your only source of real-time DX information, just drop me a note at thedxmentor@gmail.com5X - Uganda – Richard, HB9FHV,is currently in Uganda for a brief visit with basic radio equipment until February 28, 2026. He plans limited activity as 5X4TA almost daily on the 10, 15, and 20 meter bands between 1500Z and 1600Z. TZ - Mali - Ulmar, DK1CE, should be QRV as TZ1CE until March 1. He will be doing mostly FT8 and SSB and says when he's on FT8 he gives stations outside Europe precedent at alltimes. He plans special attention to 160M FT8, 80M FT8 and 6M and will update daily on Club Log, the LoTW log will be after the operation. FJ - St. Barthelemy – On February 12, Andreas, DK6AS, began his February/March 2026 FJ/DK6AS operation from St. Barts. He'll be QRV on CW, FT4 and CT8 on 3.5 through 50 MHz, including participation in the ARRL International DX CW Contest. QSL via DK6AS either direct or via the bureau.VP5 - Turks and Caicos Islands - The Russell family (WD5JR, N5VOF and KJ5CMP) are in the Turks and Caicos Islands until February 23. They have an IC-7300 and KX2 running 5 to 100 watts into a 17 foot whip with coil and EFHW. They are active as VP5/HC on 7 through 50 MHz on SSB and CW. They areuploading videos to their YouTube channel Radio Roamers and Facebook page Radio Roamers. QSL via their home calls with SASE. J5 - Guinea-Bissau - The J51A DXpedition team, heading for Bijagos Archipelago (AF-020) in the February-March time frame giving the following update. "J51A on QO-100: We were asked to be active on QO-100 satellite, too. We learnt that J5 has NEVER been active on QO-100 before.So, we decided to give it a try for a lot of ATNO contacts on SSB, CW and FT8. However, none of us has operated over satellite before. Please bear with us if we do something stupid or unexpected. Just let us know by E-Mail ( j51a@gmx.de ) and we'llfix any misbehavior A.S.A.P. Technically; we will use 50 MHz as the IF band. It means that we cannot do 50 MHz when on QO-100, and vice versa. QO-100 operation will start a couple of days after the other bands. Please watch the "News" sectionon www.qrz.com/db/J51A for more info." OX – Greenland - From February 17th to March 9th, 2026, Bo, OZ1DJJ, will be active as OX3LX from Aasiaat City/Island (GP38NQ, NA-134) during this period. Please note, this is nota DXpedition but rather a business trip, so activity may be limited. 8Q - Maldives – Alex, OE5AUH, is planning a holiday operation as 8Q7AH from Rasdhoo Atoll March 1-10. RI1F - Franz Jozef Land - The Russian DX Team is preparing a major DXpedition to Franz Josef Land (RI1FJL), The Arctic Ocean archipelago, ranked 44th globally and 26th in North America. The operation will feature at least five high-power radio stations running continuously on all HF bands for 15 days in September 2026, aiming to contact as many stations as possible, including those in distant areas.The total budget for this trip is close to $80,000, making it their most expensive expedition yet, and financial support from DX clubs and individuals is crucial for its success. Donations are encouraged and can be made through the team's website - https://www.rudxt.org/ri1fjl or directlyvia PayPal un7jid@mail.ru. In addition to the previously mentioned KP5/NP3VI interview, the DX Mentor podcast will be with Hal, W8HC. Hal will bediscussing the 9U1RU DXpedition that logged almost 180,000 QSOs. Give it a listen and let me know what you think.
Hello and welcome to episode 87 of The DX Mentor – A discussion about the 9U1RU DXpedition to Burundi. If this is the first time you are joining us, Welcome! We have a back catalog covering many aspects of DX in both podcast and YouTube format. Please check us out. If you like what you find, please subscribe to always be notified about upcoming episodes!If you have a comment or a question, please drop me a note at thedxmentor@gmail.comFrom the press 9U1RU release: "An international team of 9 operators will run a DXpedition from the Republic of Burundi as 9U1RU during October 31 to November 17, 2025. QRV with at least 7 high-power stations 24/7 on all HF bands during 20 days. Their goal is to work as many stations as possible, paying attention to distant regions and low-pistols. They have found a good location with a clear take-off to all most common directions. "Below are the links that we alluded to:Indexa Newsletter: https://indexa.org/documents/newsletters/Newsletter-Issue-147-Winter2025.pdf9U1RU Website: https://www.rudxt.org/9u1ruAj8b@arrl.netWhatsApp - +5135039901Website: www.aj8b.comYoutube & Podcast TheDXMentorReal Time DX Info (DailyDX https://www.dailydx.com/Southwest Ohio DX Assoc. https://www.swodxa.orgDaily DX https://www.dailydx.com/DX Engineering https://www.dxengineering.com/Icom https://www.icomamerica.com/IC-7760 Product Page: https://www.icomamerica.com/lineup/products/IC-7760IC-PW2 Product Page: https://www.icomamerica.com/lineup/products/IC-PW2IC-7300 MK2 Product Page: https://www.icomamerica.com/lineup/products/IC-7300MK2/IC-9700 Product Page: https://www.icomamerica.com/lineup/products/IC-9700/IC-905 Product Page: https://www.icomamerica.com/lineup/products/IC-905/IC-R8600 Product Page: https://www.icomamerica.com/lineup/products/IC-R8600/IC-52A Plus Product Page: https://www.icomamerica.com/lineup/products/ID-52APLUS/
GB2RS News Sunday the 22nd of February The news headlines: RSGB 2026 Elections – Nominated Director candidates announced A year in numbers 2025 – a celebration of RSGB achievements Former RSGB President Colin Thomas, G3PSM, is now a Silent Key In this year's RSGB elections, there are vacancies for two Nominated Directors. Following a rigorous selection process, the Society's Nominations Committee has chosen to put forward Graham Smith, G4NMD, and Patrick Wood, 2E0IFB, for endorsement. RSGB members will be able to vote to endorse these candidates when voting opens on Wednesday, the 18th of March. To help you learn more about the candidates, the RSGB has published two videos. The candidates weren't given the questions in advance and were interviewed separately. You can watch their in-depth answers in a single easy-to-view video, whilst the two-minute video provides their brief thoughts on RSGB membership. You can watch them on the RSGB YouTube channel and on its website at rsgb.org/candidates Amateur radio continues to evolve, and the RSGB, in turn, develops how it supports current radio amateurs and reaches out to new audiences. The RSGB General Manager, Steve Thomas, M1ACB, wrote his annual feature called ‘A year in numbers' for the March issue of RadCom. In it he shared some of the year's great achievements in which RSGB HQ staff have often led the way. Read the full feature and view the infographic on page 48 of the March edition. You can also see the highlights in a brief video on the RSGB YouTube channel at youtube.com/theRSGB It is with great sadness that we report the passing of Colin Thomas, G3PSM. Colin worked tirelessly for the RSGB and was President from 2008 to 2009. He made a great contribution to the acquisition and defence of the radio spectrum. Within Region 1, he played a leading role in the acquisition of additional bands, including 136kHz, 472kHz, allocations at 5MHz and the expansion of 7MHz. He also led the successful defence of existing allocations. IARU Region 1 radio amateurs owe him a huge debt. Colin was an Honorary Life Vice-President and a recipient of the Founder's trophy in recognition of his work both for the Society and for the IARU. A full tribute to Colin is being prepared for the RSGB website and for RadCom. The RSGB is reminding radio amateurs that the frequencies at 5MHz are only available on a secondary basis to holders of a UK Full amateur radio licence. Foundation and Intermediate licence holders are not allowed to operate on 5MHz. You can find details about this in the OFW611 amateur radio licence terms and conditions booklet, which is available from ofcom.org.uk, and there is also more information about operating on this band at rsgb.org/5mhz Are you passionate about attracting older people to amateur radio, while retaining and engaging our valued senior members? The RSGB is seeking an enthusiastic individual to take on the role of Honorary Mature Members' Officer. This volunteer leadership role will champion the inclusive ethos of amateur radio and promote how the hobby can be enjoyed by all, irrespective of age. You will help to ensure that mature members feel supported, valued and actively involved and build a small team to develop initiatives that strengthen engagement across our community. If you are an RSGB Member and are committed to helping others remain active and involved in the hobby they love, visit rsgb.org/volunteers to read the full role description and find out how to apply. Time is running out to submit your entry to the RSGB 2026 Construction Competition. The deadline is Sunday, the 1st of March. You'll need to email a short description of your entry and up to four photographs. It is also recommended to send a link to a video that demonstrates your entry working. More details on submitting your application can be found via rsgb.org/construction-competition. The results of the competition will be announced during the RSGB 2026 Annual General Meeting on Saturday, 18th of April. To encourage activity on the 2m band, the 145 Alive team has introduced 145 Alive 50. The trial period for this initiative runs until the 18th of April. The rules are simple. Call CQ on the calling channel and have at least one QSO per day on the 2m band. Record your contacts and send your log for 50 or more days, in ADIF format, to 145aliveuk@gmail.com. Electronic certificates will be supplied by the 145 Alive team to successful applicants. Please send details of all your news and events to radcom@rsgb.org.uk. The deadline for submissions is 10 am on Thursdays before the Sunday broadcast each week. And now for details of rallies and events On Sunday, the 1st of March, the Exeter Radio Rally will take place at The Kenn Centre, EX6 7UE. The rally will include a bring-and-buy area, disabled facilities, catering and free car parking. The entry fee is £3. Traders can gain entry from 8 am, and the doors open to the public at 10 am. For more information, email Bill, G7AKJ via billwrench213@btinternet.com On Sunday, the 22nd of March, Callington Radio and Electronics Rally will be held in the Town Hall, New Road, Callington, Cornwall, PL17 7BE. The doors will be open to the public from 10 am until 1 pm. Entry is £2 each with no charge for those under the age of 16. A comprehensive selection of traders, clubs and societies from the southwest will be present along with a bring-and-buy stall and the usual catering service. Pre-booking is essential, so please contact Alastair, M0KRR, via alastair.kerr1@btinternet.com or by phone on 01503 262 755 with your requirements as soon as possible. Visit callingtonradiosociety.org.uk for more information. Now the Special Event news Today, Sunday the 22nd, Hartlepool Amateur Radio Club will be operating using special callsign GB100HG for World Thinking Day on the Air. Listen for activity on the 40, 20 and 10m bands, mainly using SSB and possibly CW and FT8. FM contacts will also be possible on the 2m and 70cm bands. The operators are keen to make as many contacts as possible. If you hear them, please give them a call. Celebrating World Radio Day, the VIC Amateur Radio Contest DX Club is operating as 4UNR until the 28th of February using CW, SSB and digital modes. QSL via OQRS. Now the DX news Michael, OZ6ABL, is active as 5Z4/OZ6ABL from Watamu in Kenya, until Saturday, the 28th of February. Activity is on the 80 to 6m bands using CW, SSB, FT8 and FT4. QSL via Logbook of the World, OQRS, or via Michael's home call. Ulmar, DK1CE, is active as TZ1CE from Bamako in Mali until Sunday, the 1st of March. He is operating mainly FT8 on the HF bands. SSB contacts are also possible. QSL via Club Log and Logbook of the World. Now the contest news Today, Sunday the 22nd of February, the UK Microwave Group EHF Band Contest runs from 0800 to 1700 UTC. Using all modes on 76 to 241GHz frequencies, the exchange is signal report, serial number and locator. The REF Contest started at 0600 UTC yesterday, the 21st, and runs until 1800 UTC today, Sunday the 22nd of February. Using SSB on the 80 to 10m bands, where contests are permitted, the exchange is signal report and serial number. The ARRL International DX Contest started at 0000UTC yesterday, the 21st, and finishes at 2359 UTC today, Sunday, the 22nd of February. Using CW on the 160 to 10m bands, the exchange is signal report and transmitter power. American stations also send their state, and Canadian stations send their province. Tomorrow, the 23rd of February, the RSGB FT4 Series Contest runs from 2000 to 2200 UTC. Using FT4 on the 80 to 10m bands, where contests are permitted, the exchange is your report. On Tuesday, the 24th of February, the RSGB SHF UK Activity Contest runs from 1930 to 2230 UTC. Using all modes on the 13cm band, the exchange is signal report, serial number and locator. On Wednesday, the 25th of February, the United Kingdom and Ireland Contest Club 80m Contest runs from 2000 to 2100 UTC. Using CW on the 80m band, the exchange is your six-character locator. On Thursday, the 26th of February, the RSGB 80m club Championship runs from 2000 to 2130 UTC. Using CW on the 80m band, the exchange is signal report and serial number. The CQ 160m DX Contest starts at 2200 UTC on Friday, the 27th of February and runs until 2200 UTC on Sunday, the 1st of March. Using SSB on the 160m band, the exchange is signal report and CQ zone. American stations also send their state, and Canadian stations send their province. On Sunday the 1st of March, the Worked All Britain 3.5MHz Phone Contest runs from 1800 to 2200 UTC. Using SSB on the 80m band, the exchange is signal report, serial number and your Worked All Britain area. Now the radio propagation report, compiled by G0KYA, G3YLA and G4BAO on Thursday, the 19th of February. We had a week of relatively low solar flux indices and mostly settled geomagnetic conditions. While the solar flux index fell to the 117 to 129 range, the Kp index was mostly in the twos and threes. This was after the weekend's geomagnetic disturbance, due to a large coronal hole that expelled solar plasma in a stream that moved past Earth at nearly 700 kilometres per second. As a result, HF conditions have been quite good with plenty of DX being worked. The KP5/NP3VI Desecheo Island DXpedition near Puerto Rico has been a struggle for many, due to its popularity and use of solar-powered batteries and low power. One quick hint: try FT8 on the 40m band around 7 to 7.30 am. You get a greyline enhancement at sunrise, but for much of Europe, the band is closing, which means there is little competition. Let us know how you get on. Other DX this week includes 8R1WA in Guyana. This is an Italian team operating until Friday, the 27th of February. Chuck will be active as VP2MCV on Montserrat and will be active in the ARRL DX CW Contest until the end of the month. Finally, a German team will be operating as J51A in Guinea-Bissau until mid-March. Another large solar coronal hole became Earth-facing on Friday, the 20th of February, so we may expect unsettled geomagnetic conditions from today, the 22nd. Next week, the Space Weather Prediction Centre forecasted a low solar flux index of 105 for yesterday, the 21st, before rising again to potentially reach 165 by the end of this month. Unsettled geomagnetic conditions are forecast for the 24th and 25th with an estimated Kp index of 5. And now the VHF and up propagation news from G3YLA and G4BAO Friday the 13th and Saturday the 14th of February saw afternoon openings on 50MHz to TZ1CE in Mali to generate DX interest. However, as expected, it was stations much further south that benefited from the best propagation, with just a few stations in the southern areas of the UK making QSOs on FT8. The present spell of unsettled weather remains the main theme for the period up to the end of the coming week. The pattern is controlled by a strong Atlantic jet stream, so ‘changeable' is the watchword with periods of heavy rain alternating with brighter showery interludes and, of course, quite strong winds at times. In terms of propagation, rain scatter is a clear favourite, although in one cloudy period in mild air around Tuesday the 24th, some possible tropo may show up for southern areas of the UK. The meteor scatter options are again subject to random activity since we are still some way off the next important shower, the Lyrids, in late April. The auroral prospects have, at best, been gently simmering at low values of the Kp index, mostly less than 5. Stay tuned, though, because we may see an uptick around Tuesday the 24th. So watch for signs of fluttery signals on the LF bands and then check for auroral tones on 10m and up through the 6 to 2m bands. These events are always a bit of a long shot, but should be worth checking this time. The sporadic-E season is still some way off, although a strong jet stream pattern is always a positive. For EME, Moon declination is positive and rising, meaning longer Moon windows and higher peak elevation. Path loss continues to fall as we approach perigee on Tuesday, the 24th. 144MHz sky noise starts the coming week low, rising to moderate towards the end. And that's all from the propagation team this week.
Hey, it's Alex, let me catch you up! Since last week, OpenAI convinced OpenClaw founder Peter Steinberger to join them, while keeping OpenClaw.. well... open. Anthropic dropped Sonnet 4.6 which nearly outperforms the previous Opus and is much cheaper, Qwen released 3.5 on Chinese New Year's Eve, while DeepSeek was silent and Elon and XAI folks deployed Grok 4.20 without any benchmarks, and it's 4 500B models in a trenchcoat? Also, Anthropic updated rules state that it's breaking ToS to use their plans for anything except Claude Code & Claude SDK (and then clarified that it's OK? we're not sure) Then Google decided to drop their Gemini 3.1 Pro preview right at the start of our show, and it's very nearly the best LLM folks can use right now (though it didn't pass Nisten's vibe checks) Also, Google released Lyria 3 for music gen (though only 30 seconds?) and our own Ryan Carson blew up on X again with over 1M views for his Code Factory article, Wolfram did a deep dive into Terminal Bench and .. we have a brand new website: https://thursdai.news
Welcome to QNEWS for week 8 of 2026. I'm John VK4JPM, secretary of the Darling Downs Radio Club, with our contribution. One of the real charms of a club is when it can provide some social activity between birds of a feather, and the Darling Downs Radio Club does that on the even months of the year. So here it is February and today at lunchtime (if you're listening on Sunday 22nd, of course) you can come and join us. You don't have to be a member of the club, and it doesn't matter if you don't know anyone because we're really friendly. We'll be hard to miss, because we're in the club shirts with our names in bright yellow letters and club caps. Very hard to miss. The February lunch is a very social barbeque starting from 1130 or so, at Peacehaven Botanic Park on Kuhls Road just south of Highfields. Stan Kuhl - that's K U H L was a dairy farmer who used to own most of the land in the area, and in 2005 he donated 4.7 hectares of land to be developed into a botanic park. The council has even expanded it a bit since then, with a plant sales area that will be open from 0900 on the day. We're going to be at the barbeques on the western side... plenty of parking on-street close to the BBQ area, or actually off Kuhls Road which is slightly a bit more of a walk but good exercise and very pretty. And there's tons of seating and undercover tables so you only need to bring what you plan to eat and drink. The location is good for HF and VHF so bring a radio if you feel like it. We'll be listening on VK4RTQ repeater and 146.500 simplex in case you get lost, and we'll answer to VK4WID. All the details are on the website at DDRCi.org.au. You don't have to register, but we'd love to get an email to lunch at ddrci.org.au to let us know you're coming. Next: More good news on the licence front. Club member Perry decided that it was time to do the Foundation Assessment and sailed through the theory and prac exams. By the time you hear this he might even have his call. Well done Per. We'd love to help you get started or do an upgrade, and there's no charge for that. Just drop a line to education@ddrci.org.au and let's have a chat about how to make your ham aspirations a reality. This is week 8 of 2026, and if you're following the international ham radio challenge at hamchallenge.org you'll find that the week 8 challenge is to do some experimenting with APRS. That's the Amateur Radio Packet Reporting system, and there's a pretty good Wikipedia article that explains what APRS is all about. If you haven't ever played with APRS, it's not too hard to get started and there are plenty of resources available to help. Even looking up the history on the web is interesting, and there's a VK APRS site hidden in there with some useful local tips - helpful, given that APRS is designed as a real time protocol for local material. Let us know how you go. And finally: lock in the date of 9 March for our next club meeting. We'll tell you more about that next week. Wrapping up: the bi-monthly is Sunday 22 February (most likely that's today) and all the details are on the club website at DDRCi.org.au. Turn up a bit early if you'd like to buy some plants at the nursery, and it's a BYO everything event. As always we're listening, so if you have an idea for a meeting or activity, want to check any of the info I've just provided, or just make contact, drop an email to secretary@ddrci.org.au and as Perry will tell you: we respond very quickly. I'm John VK4JPM secretary of the Darling Downs Radio Club. Our 2m weekly net follows at the top of the hour on VK4RDD. Till next week, 73 and good packeting!
Foundations of Amateur Radio Just under a year ago I started an experiment. I set-up a beacon for WSPR, or Weak Signal Propagation Reporter, transmitting at 200 mW into a dummy load using eight bands between 80m and 10m. I also set-up an RTL-SDR dongle, connected to an external 20m HF antenna and made it monitor 18 amateur bands between 630m and 23cm. I left this running 24/7 for most of the year, though there were times when I detached the antenna due to local thunderstorms and there was a seven week period where there were no reports. It's highly likely that I forgot to reconnect the antenna, but I don't recall. For this analysis I used the online WSPRnet.org database where I uploaded my spots as they were decoded. I noticed that there are reports that I have locally that are not in the database, though I'm not sure why. They're incomplete and not in the same format and merging these is non-trivial for reasons I'll discuss. Lesson learnt, the "rtlsdr-wsprd" tool needs to be patched to output the data in the same format as is available from the online database and I need to actively log locally. The results are puzzling, at least to me right now. Let's start with the low hanging fruit. There are no reports of my WSPR beacon being received by anyone other than me. That doesn't guarantee that nobody heard me, just that nobody reported that they did. In the database there's just over six thousand reports of my station receiving a WSPR transmission from my beacon during the past year. The reports cover all bands, though not equally. The 80m band represents 6 percent of reports, where 40m accounts for 20 percent. The reported SNR, or Signal To Noise ratio, varies significantly across the data. For example, the 12m band shows a range of 42 dB. Digging into this does not reveal any patterns related to date, time of day, season, other band reports or any other metric I was able to imagine. In my exploration, missing records and time-zone differences aside, I discovered that the local data does not appear to match the database. For example I have records where the software decoded my beacon ten times in the same time-slot, but none of them exist in the database. For others, there's only one matching record, which leads me to believe that the WSPRnet.org database only accepts the first report for any given combination of timestamp, transmitter and receiver, but I have yet to confirm that. So, let's talk about getting more than one result for a specific time-slot. As you might know, a WSPR signal is transmitted every 120 seconds, starting at the even minute. Each transmission lasts 110.6 seconds. The decoder will make several attempts to decode multiple, potentially overlapping signals. It is my understanding that the way this happens is by essentially removing a known decoded signal and then attempting to decode what's left, repeating until either there's no more signals to decode, or time runs out, since there's probably only really 9.4 seconds in which to do this. Potentially this means that a faster computer will decode more signals, but I've not actually tested that, but it's probably something worth pursuing. Back to our decodes. If the first decode is removed from the received data and the next decode gives you similar information, same callsign and maidenhead locator, with SNR and frequency differences, then you might imagine that there's so much of it there that the only way that might happen is because the receiver is overloaded. I'm still looking into this, because if that's the case, then we'd need to determine if the receiver was always overloaded, or only sometimes. It's curious, since there's over a thousand other signals being received from other stations, several over 18,000 km away, so it's not like the receiver is completely swamped. Another hypothesis is that the decode is coming from a different band, like a harmonic. This is potentially caused because from a band and timing perspective, the receiver isn't linked to the transmitter in any way. The transmitter hammers away 24/7 one band after the next, switching every two minutes, the receiver listens for half an hour on a band, then randomly picks the next, until it runs out of bands and starts again. The receiver is listening on more than twice as many bands as the transmitter operates on, but that doesn't mean that it cannot hear the transmitter on a harmonic of one of the bands. Again, I don't know if this is the case, or if something else is happening. One thing I'd expect, is to see reports on other harmonics outside the bands that the transmitter is using, but I'm not seeing that. Perhaps the overload is limited to just the band we're actively monitoring and the other signals are coming in regardless of the overload. I'm still trying to determine if that's the case. As I said, merging the data from the two sources is non-trivial, time-zones and formatting are not the same and I'm not in the mood for manually fixing 2,500 or so records, not to mention attempting to determine which SNR is real for the multi-decodes. So, what did I learn? For starters, the world didn't come to a sudden and laborious stop when I transmitted into a dummy load. The experiment was interesting and worth doing. I should test using shorter runs until I've determined the mechanisms involved. For example, one amateur suggested that I might be decoding information that's coming in via the coax, rather than from an antenna. That said, doing so would also require significantly more effort to incrementally analyse this data, so I'd have to find ways to improve my workflow. The SNR is all over the place, not something that I expected. All bands are represented in the data. There does not seem to be any relationship between date, time, other stations and the signal strength seen for the local transmission. I need better record keeping. No doubt there's more. If you have questions, feel free to comment. The experiment also leaves plenty of questions. Why do the SNR values vary so much? I can't imagine that the variation relates to propagation, since we'd have reports from other receivers, so is it something else, even though we're talking about equipment that's indoors, are we observing variations in electronics temperatures for example? Alternatively, if the measurements represent overload of the receiver, why don't we see other harmonics and how is it possible that we can receive and decode very weak signals from other stations? If the signal is arriving via an unexpected path, like the coax, rather than the antenna, what could we do to stop that from occurring and what effects does it have on our current dataset, and could we account for those effects? I suppose, leaving the ultimate question for last: Is the data that I've collected over the past year useful, beyond potentially "this is not how you do this", or is it essentially meaningless? I'm Onno VK6FLAB
12 antennes géantes situées au centre de la France diffusent les programmes de RFI en ondes courtes. Ces ondes, qui parcourent des milliers de kilomètres, continuent d'informer des millions d'auditeurs, notamment zones rurales ou dans des pays qui se ferment. En écho à la Journée mondiale de la radio, L'atelier des médias s'intéresse aux ondes courtes. À l'heure du tout numérique, la radio par ondes courtes (OC) ou shortwave (SW) n'est pas encore reléguée au passé. C'était l'idée d'une table ronde qui s'est tenue le 31 janvier 2026 au festival Longueur d'ondes, à Brest, dont cet épisode de L'atelier des médias fait entendre des extraits choisis. Aux côtés de Steven Jambot se trouvaient Carlos Acciari, chargé de la planification des ondes courtes à RFI, et Jérôme Hirigoyen, directeur du développement et des radios internationales chez TDF. Le rebond sur l'ionosphère : une technologie qui fait fi des frontières Le secret de la puissance des ondes courtes réside dans la physique. Contrairement à la FM, dont la portée excède rarement 70 kilomètres, les ondes décamétriques (entre 3 et 30 MHz) utilisent l'ionosphère – une des couches de l'atmosphère – comme un miroir. Depuis le centre émetteur de TDF à Issoudun (Saint-Aoustrille), en région Centre, 12 antennes géantes ALLISS de 80 mètres de haut diffusent les programmes de RFI par bonds successifs sur des milliers de kilomètres. Cette infrastructure, l'une des plus performantes au monde, permet de cibler des zones jusqu'à 15 000 km de distance. À écouter aussiOndes courtes: à la découverte des antennes géantes qui diffusent RFI à travers le monde HFCC et géopolitique des ondes courtes La gestion des fréquences mondiales repose sur une coordination internationale rigoureuse. Deux fois par an, les grands diffuseurs mondiaux (Américains, Chinois, Russes, Japonais, Français...), qui représentent des radios comme BBC, VOA, DW, NHK, KBS se réunissent au sein de la HFCC (High Frequency Coordination Conference) pour s'accorder sur les plans de fréquences et éviter les brouillages. Jérôme Hirigoyen décrit ces rencontres comme des « accords entre gentlemen » essentiels pour assurer la clarté du signal. Dans un contexte de tensions mondiales, la HF (haute fréquence) redevient un enjeu de souveraineté. Si un satellite peut être brouillé par une simple antenne au sol, il est extrêmement complexe et coûteux de neutraliser totalement les ondes courtes. C'est aussi le média de « dernier recours » lors de crises ou de blackouts. Jérôme Hirigoyen souligne cette permanence stratégique : « Quand on a besoin de communiquer, ça reste un média extrêmement robuste. » Un futur numérique : DRM et DRM Cast L'innovation ne délaisse pas les ondes courtes avec la norme DRM (Digital radio mondiale). Ce format numérique offre une qualité audio supérieure, réduit la consommation d'énergie de 30 à 40 % et permet la transmission de données (images, textes). RFI et TDF expérimentent actuellement le projet DRM Cast, pensé comme un véritable « serveur de podcasts ». Ce boîtier autonome, couplé à un panneau solaire, capte le signal DRM et stocke les données reçues afin de pouvoir les rediffuser en WiFi. Dans un camp de réfugiés ou une zone sans internet, les utilisateurs peuvent ainsi télécharger gratuitement des contenus sur leur smartphone.
This show has been flagged as Clean by the host. Making First Contact An amateur radio contact, more commonly referred to as simply a "contact", is an exchange of information between two amateur radio stations. The exchange usually consists of an initial call, a response by another amateur radio operator at an amateur radio station, and a signal report. A contact is often referred to by the Q code QSO. It is often limited to just a minimal exchange of such station IDs. Stations who have made a contact are said to have worked each other. An operator may also say that he has worked a certain country. QSO: (amateur_radio) Making your first QSO Kees's history 1990 PD1OOY VHF/UHF only, 25 Watt, only F3E. (NED, BEL, LX, DL) 1991 PE1OOY CEPT Class II 1995 G7TWO 1st British callsign CEPT Class II 1997 PE7TWO First vanity callsign CEPT Class II 2000 M5TWO CEPT Class A+B+ CW included 2000 PA7TWO CEPT Class I + CW included 2002 M5TWO CEPT Class I + CW included Ken's history COVID-19 lockdown in the United Kingdom 2020-08-21 Amateur Foundation Examination 2021-01-28 Amateur Intermediate Examination 2021-08-05 Amateur Full Radio Licence Links UK Amateur Licensing Baofeng UV-5R Mini 5W Dual Band Radio BangGood Tech Minds video " This Baofeng UV-5R Mini Is Almost Perfect - And It's Only $25! " QSO: amateur_radio QSL Card IARU Region 1 HF band plan QRZ.com Club Log Modulation Codes , Types of radio emissions Provide feedback on this episode.
Click Here,Text Us,Get a Shout-Out next episode.We chase a week of strange headlines and real-world signals: a refined profile of Jupiter, an xAI–SpaceX shuffle, a calm stretch in quakes, and a noisy sun that toys with radios and GPS. We end with a clear correction on HF time-signal frequencies and how to use them well.• value for value model and why we keep it free• Jupiter's refined equatorial profile and what it means• xAI merging with SpaceX and possible motives• seven-day earthquake counts trending lower• sunspot activity, multiple X-class flares, KP swings• HF time signals on 5, 10, and 15 MHz, propagation habits• simple resilience tips for comms and navigation• how to contact us with comments and ideasGo to our website, look at the contact page. You can comment by doing a recording or by leaving us a comment. You can also email us at the ugly quacking duck at gmail.com. Or you can get on many of the players; on the details where it talks about the podcast, there's a link there, you can click on it and leave us a text, a comment. We'll read it off and let you be part of the show. But however you do it, just do it. Let us know you're out there, let us know you're listening, give us your comments. If you have something you'd want to hear about or talk about, let us know, okay?Support the show I hope you enjoy the show! We believe in Value4Value for the podcaster and the listener alike. If you find value in our show, Come back, and tell a friend. Sharing the podcast with someone is a very good way for us to grow. Pray for us. Contact Us. Email: theuglyquackingduck@gmail.com. Text us: On a podcast 2.0 player you will find a link under the episode description. Leave a voice message: On our “Comment” page there is a link to record your voice. Just letting us know you are out there listening is a big boost! Help us with ideas, technology, art work, etc. Support us financially. The equipment, the Podcast hosting, the web page all costs. “Support the Podcast” Anyway you can support us is very much appreciated! Thank You. Until Next time.73 and may the Father's love go with you.Bruce Email: theuglyquackingduck@gmail.comWebsite: https://theuglyquackingduck.com/
Click Here,Text Us,Get a Shout-Out next episode.We chase a week of strange headlines and real-world signals: a refined profile of Jupiter, an xAI–SpaceX shuffle, a calm stretch in quakes, and a noisy sun that toys with radios and GPS. We end with a clear correction on HF time-signal frequencies and how to use them well.• value for value model and why we keep it free• Jupiter's refined equatorial profile and what it means• xAI merging with SpaceX and possible motives• seven-day earthquake counts trending lower• sunspot activity, multiple X-class flares, KP swings• HF time signals on 5, 10, and 15 MHz, propagation habits• simple resilience tips for comms and navigation• how to contact us with comments and ideasGo to our website, look at the contact page. You can comment by doing a recording or by leaving us a comment. You can also email us at the ugly quacking duck at gmail.com. Or you can get on many of the players; on the details where it talks about the podcast, there's a link there, you can click on it and leave us a text, a comment. We'll read it off and let you be part of the show. But however you do it, just do it. Let us know you're out there, let us know you're listening, give us your comments. If you have something you'd want to hear about or talk about, let us know, okay?Support the show I hope you enjoy the show! We believe in Value4Value for the podcaster and the listener alike. If you find value in our show, Come back, and tell a friend. Sharing the podcast with someone is a very good way for us to grow. Pray for us. Contact Us. Email: theuglyquackingduck@gmail.com. Text us: On a podcast 2.0 player you will find a link under the episode description. Leave a voice message: On our “Comment” page there is a link to record your voice. Just letting us know you are out there listening is a big boost! Help us with ideas, technology, art work, etc. Support us financially. The equipment, the Podcast hosting, the web page all costs. “Support the Podcast” Anyway you can support us is very much appreciated! Thank You. Until Next time.73 and may the Father's love go with you.Bruce Email: theuglyquackingduck@gmail.comWebsite: https://theuglyquackingduck.com/
Problems with the PREVENT score, a breakthrough in lipid-lowering therapy, a surprising benefit in stroke care, and more thoughts on statins and preventive care of heart disease are the topics John Mandrola, MD, discusses in this week's podcast. This podcast is intended for healthcare professionals only. To read a partial transcript or to comment, visit: https://www.medscape.com/twic I PREVENT Score PREVENT Equations in Young Adults https://doi.org/10.1016/j.jacc.2025.12.019 Hospital Readmission Reduction Program for HF https://pmc.ncbi.nlm.nih.gov/articles/PMC7664458/ II A New Breakthrough in LDL-C Management With an Oral PCSK9 Inhibitor https://www.medscape.com/viewarticle/time-overcome-pcsk9i-inertia-new-data-future-options-2025a1000wf8 CORALreef Trial https://www.nejm.org/doi/full/10.1056/NEJMoa2511002 CORALreef Outcomes Trial https://clinicaltrials.gov/study/NCT06008756 III A Win for the Factor XI Inhibitor Asundexian – OCEANIC Stroke Trial https://www.medscape.com/viewarticle/first-clear-win-factor-xia-inhibitors-stroke-reduced-2026a10003t0 OCEANIC-STROKE Slide deck https://clinicaltrialresults.org/wp-content/uploads/2026/02/26-02-02_ISC_OCEANIC-STROKE-primary.pdf OCEANIC-AF Study Stopped Early https://www.bayer.com/media/en-us/oceanic-af-study-stopped-early-due-to-lack-of-efficacy/ IV Statin Side Effects Assessment of AEs Attributed to Statins -- Meta-analysis https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(25)01578-8/fulltext N-of-1 Trial to Assess AEs of Statins https://www.nejm.org/doi/full/10.1056/NEJMc2031173 When to Start a Statin Is a Decision About Preference -- Editorial https://www.ahajournals.org/doi/10.1161/CIRCULATIONAHA.117.029808 V Heart Disease Statistics CV Statistics in the US, 2026 https://www.jacc.org/doi/10.1016/j.jacc.2025.12.027 You may also like: The Bob Harrington Show with the Stephen and Suzanne Weiss Dean of Weill Cornell Medicine, Robert A. Harrington, MD. https://www.medscape.com/author/bob-harrington Questions or feedback, please contact news@medscape.net
Episode 211: Understanding HFpEF. Hyo Mun and Jordan Redden (medical students) explain the pathophysiology of heart failure with preserved ejection fraction (HFpEF) and how it differentiates from HFrEF. Dr. Arreaza asks insightful questions and summarizes some key elements of HFpEF. Written by Hyo Mun, MS4, American University of the Caribbean; and Jordan Redden, MS4, Ross University School of Medicine. Comments and edits by Hector Arreaza, MD.You are listening to Rio Bravo qWeek Podcast, your weekly dose of knowledge brought to you by the Rio Bravo Family Medicine Residency Program from Bakersfield, California, a UCLA-affiliated program sponsored by Clinica Sierra Vista, Let Us Be Your Healthcare Home. This podcast was created for educational purposes only. Visit your primary care provider for additional medical advice.What is EF? Just imagine, the heart is a pump, blood gets into the heart through the veins, the ventricles fill up and then squeeze the blood out. So, the percent of blood that is pumped out is the EF. Let's start at the beginning. What is HFpEF?Mike: HFpEF stands for heart failure with preserved ejection fraction. Basically, these patients squeeze normally—their ejection fraction is 50% or higher—but here's the thing: the heart can't relax and fill the way it should. The muscle gets stiff, almost like a thick leather boot that just won't stretch. And because the ventricle can't fill properly, pressure starts backing up into the lungs and the rest of the body. That's when patients start experiencing shortness of breath, leg swelling, fatigue—all those classic symptoms.Dr. Arreaza: And this is where people get fooled by the ejection fraction.Mike: Exactly. The ejectionfraction tells you total left ventricular emptying, not just forward flow.Jordan: The classic example is severe mitral regurgitation. You can eject 60% of your blood volume and still be in cardiogenic shock because most of that blood is leaking backward into the left atrium instead of going into the aorta. So, you get pulmonary edema, hypotension, fatigue, all with a “normal” EF. Which is honestly terrifying if you're over-relying on echo reports without thinking clinically.Dr. Arreaza: And in HFpEF, functional mitral regurgitation often shows up later in the disease. It's not usually the primary cause; it's more of a marker of advanced disease. Moderate to severe MR in HFpEF independently predicts worse outcomes, including a higher risk of mortality or heart failure hospitalization. So, let's contrast this with HFrEF. How are these two different?Mike: HFrEF—heart failure with reduced ejection fraction—is a pumping problem. The heart muscle is weak and can't contracteffectively. Ejection fraction drops below 40%, and this is your classic systolic dysfunction.Jordan: HFpEF, on the other hand, is diastolic dysfunction. The heart muscle is thick, fibrotic, and noncompliant. It squeezes fine, but it just doesn't relax, even though the EF looks reassuring on paper.Mike: I like to explain it this way: HFrEF is a weak heart that can't squeeze. HFpEF is a stiff heart that can't relax. Totally different problems.Dr. Arreaza: And then there's the gray zone: heart failure with mildly reduced EF, or HFmrEF. That's an EF between 41 and 49% with evidence of elevated filling pressures. It really shares the features of both worlds. So, what actually causes HFpEF versus HFrEF?Jordan: HFpEF is basically what happens when all the problems of modern living catch up with you. You've got chronic hypertension, obesity, diabetes, metabolic syndrome, aging, systemic inflammation—all of these things slowly remodel the heart over years. The muscle gets thick and stiff, and eventually the ventricle just loses its ability to relax. So, HFpEF is really a disease of metabolic dysfunction and chronic stress in the heart. Mike: HFrEF is more about direct injury. Think about myocardial infarctions, ischemic cardiomyopathy, viral myocarditis, alcohol toxicity, chemotherapy like doxorubicin, genetic cardiomyopathies, or chronic uncontrolled tachycardia. These insults actually damage or kill heart muscle cells, leading to a dilated, weak ventricle that can't pump effectively.Dr. Arreaza: So the short version: HFpEF is caused by chronic metabolic and hypertensive stress, while HFrEF is caused mainly by myocardial damage. A question we get a lot: does HFpEF eventually turn into HFrEF? What do you guys think?Mike: In most cases, no. HFpEF patients usually stay HFpEF throughout their disease course. They don't just “burn out” and turn into HFrEF.Jordan: They're generally separate disease entities with different pathophysiology. A patient with HFpEF can develop HFrEF if they have a big myocardial infarction or ongoing ischemia that damages the muscle, but that's not the natural progression.Mike: Interestingly though, the opposite can happen. Some HFrEF patients actually improve their ejection fraction with good medical therapy—that's called HF with improved EF—and it's a great sign that treatment is working.Dr. Arreaza: Another question. How do HFpEF and HFrEF compare to restrictive cardiomyopathy and constrictive pericarditis?Jordan: Clinically, they can all look very similar: dyspnea, edema, fatigue, but the underlying mechanisms are completely different.Mike: In HFpEF, the myocardium itself is stiff from hypertrophy and fibrosis. The problem is intrinsic to the heart muscle, and EF stays preserved. Echoshows diastolic dysfunction with elevated filling pressures.Jordan: In HFrEF, the myocardium is weak. The ventricle is often dilated and contracts poorly, with a reduced EF.Mike: Restrictive cardiomyopathy is different. Here, the myocardium gets infiltrated by abnormal stuff—amyloid, iron, sarcoid—and that makes it extremely stiff. It can look like HFpEF on the surface, but it's usually more severe. On Echo You'll see biatrial enlargement, small ventricles, and preserved EF. And importantly, it's a pathologic diagnosis, so you need advanced imaging or biopsy to confirm it.Jordan: Constrictive pericarditis is another mimic, but here the myocardium is usually normal. The problem is that the pericardium is thickened, calcified, and rigid. This will physically prevent the heart from being filled. Imaging shows pericardial thickening, septal bounce, and respiratory variation in flow, and cath shows equalization of diastolic pressures, which is the hallmark of constrictive pericarditis.Dr. Arreaza: So the takeaway is: HFpEF is a clinical syndrome driven by common metabolic and hypertensive causes, while restrictive and constrictive diseases are specific pathologic entities. If “HFpEF” is unusually severe or not responding to treatment, you need to think beyond HFpEF. Which type of heart failure is more common right now?Mike: Good question, the answer is: HFpEF. It now accounts for up to 60% of all heart failure cases, and it's still rising.Dr. Arreaza: Why is that?Jordan: Because people are living longer, gaining weight, and developing more metabolic syndrome. HFpEF thrives in older, or people with obesity, hypertension, or diabetes: basically, the modern American population. At the same time, better treatment of acute MIs means fewer people are developing HFrEF from massive heart attacks.Mike: HFpEF is the heart failure epidemic of the 21st century. It's honestly the cardiology equivalent of type 2 diabetes.Dr. Arreaza: Let's talk aboutCOVID-19. (2025 and still talking about it) Does it actually increase heart failure risk?Mike: Yes, absolutely. COVID increases both acute and long-term heart failure risk.Jordan: During acute infection, COVID can cause myocarditis, trigger massive inflammation, and precipitate acute decompensated heart failure, especially in patients with pre-existing disease. It also causes microthrombi, which can injure the myocardium.Mike: And after infection, even mild cases are linked to a significantly higher risk of developing new heart failure within the following year. Both HFpEF and HFrEF rates go up.Dr. Arreaza: I remember seeing this in 2021, we had a patient with acute COVID and HFrEF, her EF was about 10%, I lost contact with the patient and at the end I don't know what happened to her. What's the pathophysiology of COVID and heart failure?Mike: COVID causes direct viral injury through ACE2 receptors, triggers massive inflammation that damages the endothelium and heart muscle, leads to microvascular clotting and fibrosis—all mechanisms that promote HFpEF.Jordan: Add autonomic dysfunction, persistent low-grade inflammation, and worsening metabolic syndrome, and you've got a perfect storm for heart failure.Dr. Arreaza: Bottom line: COVID is a cardiovascular disease as much as a respiratory one. If someone had COVID and now has unexplained dyspnea or fatigue, think about heart failure. Get an echo, get a BNP, start treatment. Last big question: why did we have so many therapies for HFrEF but essentially none for HFpEF for years?Mike: HFrEF is mechanistically straightforward. You've got a weak heart with excessive neurohormonal activation going on — so you block RAAS, block the sympathetic system, drop the afterload. The drugs make sense.Jordan: HFpEF is messy. It's not one disease. It's stiffness, fibrosis, inflammation, microvascular dysfunction, metabolic disease, atrial fibrillation, all overlapping. One drug can't fix all of that.Mike: And some drugs that worked beautifully in HFrEF actually made HFpEF worse. Take Beta blockers, for example. They slow heart rate, which is a problem because HFpEF patients rely on heart rate to maintain their cardiac output.Jordan: The breakthrough came with SGLT-2 inhibitors: diabetes drugs that unexpectedly addressed multiple HFpEF mechanisms at once: volume, metabolism, inflammation, and myocardial energetics.Dr. Arreaza: The miracle drug for HFpEF! Alright, let's wrap up.Mike: Bottom line: HFpEF is common, complex, and dangerous: even if the EF looks “normal.”Jordan: And if you're relying on ejection fraction alone, HFpEF will humble you every time.Dr. Arreaza: If you liked this episode, share it with a friend or a colleague and rate us wherever you listen. This is Dr. Arreaza, signing off.Even without trying, every night you go to bed a little wiser. Thanks for listening to Rio Bravo qWeek Podcast. We want to hear from you, send us an email at RioBravoqWeek@clinicasierravista.org, or visit our website riobravofmrp.org/qweek. See you next week! _____________________References:Barzin A, Barnhouse KK, Kane SF. Heart Failure With Preserved Ejection Fraction. Am Fam Physician. 2025;112(4):435-440.Heidenreich PA, Bozkurt B, Aguilar D, et al. 2022 AHA/ACC/HFSA guideline for the management of heart failure. Circulation. 2022;145(18):e895-e1032.Kittleson MM, Panjrath GS, Amancherla K, et al. 2023 ACC expert consensus decision pathway on management of heart failure with preserved ejection fraction. J Am Coll Cardiol. 2023;81(18):1835-1878.Anker SD, Butler J, Filippatos G, et al. Empagliflozin in heart failure with a preserved ejection fraction. N Engl J Med. 2021;385(16):1451-1461.Solomon SD, McMurray JJV, Claggett B, et al. Dapagliflozin in heart failure with mildly reduced or preserved ejection fraction. N Engl J Med. 2022;387(12):1089-1098.Pitt B, Pfeffer MA, Assmann SF, et al. Spironolactone for heart failure with preserved ejection fraction. N Engl J Med. 2014;370(15):1383-1392.Yusuf S, Pfeffer MA, Swedberg K, et al. Effects of candesartan in patients with chronic heart failure and preserved left-ventricular ejection fraction. Lancet. 2003;362(9386):777-781.Solomon SD, McMurray JJV, Anand IS, et al. Angiotensin-neprilysin inhibition in heart failure with preserved ejection fraction. N Engl J Med. 2019;381(17):1609-1620.Kosiborod MN, Abildstrøm SZ, Borlaug BA, et al. Semaglutide in patients with heart failure with preserved ejection fraction and obesity. N Engl J Med. 2023;389(12):1069-1084.Xie Y, Xu E, Bowe B, Al-Aly Z. Long-term cardiovascular outcomes of COVID-19. Nat Med. 2022;28(3):583-590.Puntmann VO, Carerj ML, Wieters I, et al. Outcomes of cardiovascular magnetic resonance imaging in patients recently recovered from COVID-19. JAMA Cardiol. 2020;5(11):1265-1273.Basso C, Leone O, Rizzo S, et al. Pathological features of COVID-19-associated myocardial injury. Eur Heart J. 2020;41(39):3827-3835.Nalbandian A, Sehgal K, Gupta A, et al. Post-acute COVID-19 syndrome. Nat Med. 2021;27(4):601-615.Badve SV, Roberts MA, Hawley CM, et al. Effects of angiotensin-converting enzyme inhibitors and angiotensin receptor blockers in adults with estimated GFR less than 60 mL/min per 1.73 m². Ann Intern Med. 2024;177(8):953-963.Navis G, Faber HJ, de Zeeuw D, de Jong PE. ACE inhibitors and the kidney: a risk-benefit assessment. Drug Saf. 1996;15(3):200-211.Textor SC, Novick AC, Tarazi RC, et al. Critical perfusion pressure for renal function in patients with bilateral atherosclerotic renal vascular disease. Ann Intern Med. 1985;102(3):308-314.Hackam DG, Spence JD, Garg AX, Textor SC. Role of renin-angiotensin system blockade in atherosclerotic renal artery stenosis and renovascular hypertension. Hypertension. 2007;50(6):998-1003.Ronco C, Haapio M, House AA, et al. Cardiorenal syndrome. J Am Coll Cardiol. 2008;52(19):1527-1539.Prins KW, Neill JM, Tyler JO, et al. Effects of beta-blocker withdrawal in acute decompensated heart failure. JACC Heart Fail. 2015;3(8):647-653.Jondeau G, Neuder Y, Eicher JC, et al. B-CONVINCED: Beta-blocker CONtinuation Vs. INterruption in patients with Congestive heart failure hospitalizED for a decompensation episode. Eur Heart J. 2009;30(18):2186-2192.Theme song, Works All The Time by Dominik Schwarzer, YouTube ID: CUBDNERZU8HXUHBS, purchased from https://www.premiumbeat.com/.
The following DX information comes from Bernie, W3UR, editor of the DailyDX, the WeeklyDX, and the How's DX column in QST. If you would like a free 2-week trial of the DailyDX, your only source of real-time DX information, justdrop me a note at thedxmentor@gmail.comV4 - St. Kitts - The 425 DX News reports that V47JA by W5JON is QRV from the island until February 3, SSB andFT8 on HF. QSL direct to W5JON, or use Logbook of the World. TL - Central African Republic & TT –Chad - TJ1GD, Darek, has established permanent amateur radio stations in the Central African Republic and in Chad, which are maintained locally. These stations (TL8GD and TT1GD), licensed to Darek, operate periodically-often remotely using FT8, CW, and SSB. QSL confirmations are available via LoTW and Club Log.J5 - Guinea-Bissau – Livio, IZ3BUR, is once again QRV as J52EC starting January 24. He has been reported on SSB on 10 and 15 meters. Numerous sources report he is there until March. QSL direct only via IZ3BUR. C2 - Nauru – Phil, FK1TS, is back on Nauru Island and expects to be active as C21TS on FT8 by the weekend, after setting up his vertical antenna. He will operate until July 2026, and Club Log Livestream will indicate when he is on the air. KP5/NP3VI, Desecheo Island - KP5/NP3VI is now 2 weeks into its planned 30-day operation. Their latest published statistics are as follows: 29,418 QSOs with 8,291 unique callsigns; ATNO for 1,66 stations. Six continents are represented in the log, with 91.1 percent of the QSOs with North American and Europe. However, North America contacts continue to decrease in percentage as they increase activity with other regions. C5 - The Gambia - C5SP, Przemyslaw and C5MB, Magdalena are QRV from Sanyang, Gambia (Grid Square IK13pf) until March 2026. QSL cards are available via SP3PS Direct, but not through LoTW.H4 - Solomon Islands - DL2GAC, Bernhard now in the Solomon Islands as H44MS until mid-May. He departed India last Wednesday, arriving in the Solomons' capital on Friday. He is renewing his H44MS license, which was scheduled to expire in early February. He will move to his "usual QTH" there tomorrow or Wednesday. He has taken with him a Hexbeam that covers 20-6, to replace his old tri-bander that covered 20-10. He says the weather is poor, lots of rain, no sunshine. He plans to mostly be on 40M this time, with a dipole 20M high in a palm tree near the ocean.
Join me for my first Parks on the Air (POTA) activation using the brand-new ICOM IC-7300MK2 HF transceiver!
CRT—now framed as cardiac physiologic pacing—remains a cornerstone for HFrEF patients with LVEF ≤50% and either high ventricular pacing burden or a wide QRS, with the biggest gains in LBBB and QRS ≥150 ms. ⚡
PODCAST: This Week in Amateur Radio Edition #1404 - Full Version (With repeater ID breaks every 10 minutes) Release Date: January 24, 2026 Here is a summary of the news trending...This Week in Amateur Radio. This week's edition is anchored by Chris Perrine, KB2FAF, Jordan Kurtz, KE9BPO, Denny Haight, NZ8D, Mike Nicolich, K9DXM, Don Hulick, K2ATJ, Will Rogers, K5WLR, Ed Johnson, W2PH, George Lama, KC2OXJ, Eric Zittel, KD2RJX, George Bowen, W2XBS, and Jessica Bowen, KC2VWX Produced and edited by George Bowen, W2XBS Approximate Running Time: 1:38:53 Podcast Download: https://bit.ly/TWIAR1404 Trending headlines in this week's bulletin service 1. AMSAT: AMSAT Membership Now Includes “Getting Started” Guide 2. AMSAT: Message To U.S. Educators: ARISS Contact Opportunity Call For Proposals 3. AMSAT: Satellite Shorts From All Over 4. WIA: Chinese National Damages Undersea Cable 5. WIA: Communication News Shorts 6. WIA: Hubble Space Telescope Nearing Its End Of Life 7. WIA: Amateur Issues Call For More Ham Radio Accessible Digital Software Development 8. ARD: SpottedHam.com Launches Custom POTA and Keyword Email Alerts 9. ARRL: ARRL Director Tharp, KB7HDX Receives Search-and-Rescue Award 10. ARRL: ARRL Board Approves Funding for Federal Advocacy; Creates New DXCC Single-Band Honor Roll 11. ARRL: Vandals Strike Ham Factory 12. ARRL: ARRL Honorary Vice President John Cadwallader Kanode, N4MM, Silent Key 13. ARRL: Nominations Are Now Being Accepted For The 2026 Dayton Hamvention Awards. 14. ARRL: Former FCC Official John B. Johnston, W3BE, Of Derwood, Maryland, Silent Key 15. PY: Amateurs Arrested In Belarus Under Suspicion Of Espionage 16. NASA Artemis Two Spacecraft Is Rolled Out To The Launch Pad 17. Congress Agrees To Restore Funding To The Voice Of America 18. Hamvention Awards Nomination Window Closes Soon 19. Damage To Taiwanese Undersea Cables Spurs More Interest In Amateur Radio 20. Hosting Site For World RadioSport Team Championship 2030 Is Being Sought 21. Hindu Pilgrimage Safety Is Provided By Indian Amateurs 22. ARRL: 2026 Repeater Directory is now shipping 23. ARRL: 2026 Winter Field Day Is up and running 24. ARRL Upcoming radiosport contests and regional convention listings 25. AMSAT: NASA marks fifty years of the GOES satellites 26. AMSAT: Two US schools & organizations move forward in the ARISS contact selection process 27. FCC: FCC approves Starlink expansion to 19,000+ satellites with direct to device service 28. RW: Financial Traders seek permanency for shortwave data transmissions 29. ARRL: New 60 Meter frequencies will become available as of February 13th, 2026 30. ARRL: The FCC is poised to exempt radio amateurs from Foreign Adversary Reporting System 31. ARD: DX Look introduces VOACAP view professional HF propagation prediction 32. FutureGeo is the most important amateur radio initiative of the decade 33. Device frequency sharing is eyes by Ofcom in the United Kingdom 34: HamCation will be featuring an APRS Digipeater Plus these Special Features This Week: * Working Amateur Radio Satellites with Bruce Paige, KK5DO - AMSAT Satellite News * Australia's own Onno Benschop, VK6FLAB, and Foundations of Amateur Radio, presents Part Five of his series on "Building A Shack". The episode Onno tackles the problem of "Noise" * The DX Corner with Bill Salyers, AJ8B with with all the latest news on DXpeditions, DX, upcoming radio sport contests, and a lot more * Weekly Propagation Forecast from the ARRL * Our own amateur radio historian, Will Rogers, K5WLR, with yet another edition of "Dead Electrical Dudes". This week's stiff is Guglielmo Marconi ----- Full Podcast (ID breaks every 10 mins for use on ham frequencies): https://www.twiar.net/twiarpodcast.rss Full Podcast (No ID Breaks for LPFM or personal listening): https://www.twiar.net/twiarpodcastlpfm.rss Truncated Podcast (Approximately 1 hour in length): https://www.twiar.net/twiarpodcast60.rss Website: https://www.twiar.net X: https://x.com/TWIAR Bluesky: https://bsky.app/profile/twiar.bsky.social Facebook: https://www.facebook.com/groups/twiari YouTube: https://www.youtube.com/playlist?list=PLQdPO6QkZJ1eIvw6-EQWQPgogVNiZim4u RSS News: https://twiar.net/?feed=rss2 Automated (Full Static file, updated weekly): https://twiar.net/TWIARHAM.mp3 Automated (1-hour Static file, updated weekly): https://www.twiar.net/TWIAR1HR.mp3 This Week in Amateur Radio is produced by Community Video Associates in upstate New York, and is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. If you would like to volunteer with us as a news anchor or special segment producer please get in touch with our Executive Producer, George, via email at w2xbs77@gmail.com. Thanks to FortifiedNet.net for the server space! Thanks to Archive.org for the audio space.
Ready to upgrade from Technician to General Class and unlock HF privileges? Join our FREE YouTube video series: "Ham Radio General License Mastery" – the ultimate prep course for the FCC Amateur Radio General Exam! Based on the official 2023-2027 General Class Element 3 question pool (valid through June 30, 2027), we break down every subelement with crystal-clear explanations, real-world examples, and bite-sized lessons on key topics like antenna systems, propagation, electrical principles, safety, and operating procedures. No fluff – just what you need to ace the 35-question exam with confidence.Get Your License Manual Here - https://geni.us/7vLlwsK Become a supporter of this podcast: https://www.spreaker.com/podcast/ham-radio-2-0--2042782/support.
Everyone keeps saying 2026 is the new 2016, and instead of romanticizing the past, I wanted to talk about how we can actually use the last decade to create the best era of our lives moving forward.In this episode, I'm breaking down the biggest lesson I've learned since 2016: taking action beats overthinking every single time. We're talking about confidence, discipline, people-pleasing, self-trust, gym anxiety, wellness, and why playing it safe is usually the thing holding you back the most.I also share mindset shifts from the book Relentless by Tim Grover, how successful people think differently, and why becoming your best self requires being willing to feel awkward, uncomfortable, and misunderstood...at least at first.If you're feeling stuck, behind, or like you know you're meant for more but keep hesitating, this episode is for you.✨ subscribe for weekly episodes about wellness, confidence, discipline, and becoming your best self✨ comment your biggest takeaway, i wanna hear it!!✨Get 10 free meals and free breakfast for life from HelloFresh with code HF-0449 https://www.filify.co/SHBn0 ✨ Get a free 10 travel of 850+ travel manuka honey sticks ($30) value with code STELLA https://manukora.com/STELLAEnjoy & dont forget to tweet/ig story me a screenshot of you listening!MY NEW WEBSITE!! Shop merch, sign up for my newsletter, book a coffee chat, & more: http://stellaraeherself.comGet $1000 off the health coach certification program I'm doing with promo code STELLACOACHING https://www.shareasale.com/u.cfm?d=1281553&m=96296&u=1030263I edit using Riverside! https://www.riverside.fm/?utm_campaign=campaign_5&utm_medium=affiliate&utm_source=rewardful&via=stella-holtshop my new glo up merch!! https://stellarae.myspreadshop.com/instagram http://instagram.com/stellaraepodcastlisten to and/or support the podcast: https://anchor.fm/stella-raetiktok: http://tiktok.com/@stellaraeherselftwitter: http://twitter.com/stellaraegoodreads: https://www.goodreads.com/user/show/10449999-stella-raemy fav books/products/health: https://www.amazon.com/shop/stellaraemy current filming set up:camera: https://amzn.to/4cEQiLOmicrophone: https://amzn.to/3Z2A5gctripod: https://amzn.to/3AEmxgKring light: https://amzn.to/3XxZrShbox lights: https://amzn.to/4e1Q1Ubportable light for phone: https://amzn.to/3XxZspjjoin my patreon for ad-free episodes, early access, merch discounts, behind the scenes, & more! https://www.patreon.com/stellaraepodlisten on spotify: https://open.spotify.com/show/2DMbeh7EqiqgROIjvW0sI9listen on apple podcasts: https://podcasts.apple.com/us/podcast/the-stella-rae-podcast/id125561818200:00 – 2026 is the new 2016 & reflecting on the last decade01:10 – why action matters more than talent or timing02:15 – my biggest regret: waiting instead of trying03:20 – why playing it safe keeps you stuck04:20 – lessons from successful people & ceos05:35 – leadership & raising your standards06:45 – gym anxiety, feeling awkward & doing it anyway08:00 – confidence, self-respect & owning your energy09:10 – why caring less about others changes everything10:35 – knowing your values so opinions don't derail you11:30 – “do the work” quote & discipline mindset12:45 – people-pleasing vs self-trust14:00 – choosing your best self daily (even when it's uncomfortable)15:55 – real-life examples of choosing confidence17:05 – taking action vs staying invisible18:10 – reflecting on regrets & lessons learned19:05 – wellness habits, gym goals & fitness mindset22:50 – discipline, consistency & staying locked in24:00 – final thoughts on becoming your best self#StellaRaePodcast
Ready to upgrade from Technician to General Class and unlock HF privileges? Join our FREE YouTube video series: "Ham Radio General License Mastery" – the ultimate prep course for the FCC Amateur Radio General Exam! Based on the official 2023-2027 General Class Element 3 question pool (valid through June 30, 2027), we break down every subelement with crystal-clear explanations, real-world examples, and bite-sized lessons on key topics like antenna systems, propagation, electrical principles, safety, and operating procedures. No fluff – just what you need to ace the 35-question exam with confidence.Get Your License Manual Here - https://geni.us/7vLlwsKBecome a supporter of this podcast: https://www.spreaker.com/podcast/ham-radio-2-0--2042782/support.
We discuss the diagnosis and management of SCAPE in the ED. Hosts: Naz Sarpoulaki, MD, MPH Brian Gilberti, MD https://media.blubrry.com/coreem/content.blubrry.com/coreem/SCAPEv2.mp3 Download Leave a Comment Tags: Acute Pulmonary Edema, Critical Care Show Notes Core EM Modular CME Course Maximize your commute with the new Core EM Modular CME Course, featuring the most essential content distilled from our top-rated podcast episodes. This course offers 12 audio-based modules packed with pearls! Information and link below. Course Highlights: Credit: 12.5 AMA PRA Category 1 Credits™ Curriculum: Comprehensive coverage of Core Emergency Medicine, with 12 modules spanning from Critical Care to Pediatrics. Cost: Free for NYU Learners $250 for Non-NYU Learners Click Here to Register and Begin Module 1 The Clinical Case Presentation: 60-year-old male with a history of HTN and asthma. EMS Findings: Severe respiratory distress, SpO₂ in the 60s on NRB, HR 120, BP 230/180. Exam: Diaphoretic, diffuse crackles, warm extremities, pitting edema, and significant fatigue/work of breathing. Pre-hospital meds: NRB, Duonebs, Dexamethasone, and IM Epinephrine (under the assumption of severe asthma/anaphylaxis). Differential Diagnosis for the Hypoxic/Tachypneic Patient Pulmonary: Asthma/COPD, Pneumonia, ARDS, PE, Pneumothorax, Pulmonary Edema, ILD, Anaphylaxis. Cardiac: CHF, ACS, Tamponade. Systemic: Anemia, Acidosis. Neuro: Neuromuscular weakness. What is SCAPE? Sympathetic Crashing Acute Pulmonary Edema (SCAPE) is characterized by a sudden, massive sympathetic surge leading to intense vasoconstriction and a precipitous rise in afterload. Pathophysiology: Unlike HFrEF, these patients are often euvolemic or even hypovolemic. The primary issue is fluid maldistribution (fluid shifting from the vasculature into the lungs) due to extreme afterload. Bedside Diagnosis: POCUS vs. CXR POCUS is the gold standard for rapid bedside diagnosis. Lung Ultrasound: Look for diffuse B-lines (≥3 in ≥2 bilateral zones). Cardiac: Assess LV function and check for pericardial effusion. Why not CXR? A meta-analysis shows LUS has a sensitivity of ~88% and specificity of ~90%, whereas CXR sensitivity is only ~73%. Importantly, up to 20% of patients with decompensated HF will have a normal CXR. Management Strategy 1. NIPPV (CPAP or BiPAP) Start NIPPV immediately to reduce preload/afterload and recruit alveoli. Settings: CPAP 5–8 cm H₂O or BiPAP 10/5 cm H₂O. Escalate EPAP quickly but keep pressures to avoid gastric insufflation. Evidence: NIPPV reduces mortality (NNT 17) and intubation rates (NNT 13). 2. High-Dose Nitroglycerin The goal is to drop SBP to < 140–160 mmHg within minutes. No IV Access: 3–5 SL tabs (0.4 mg each) simultaneously. IV Bolus: 500–1000 mcg over 2 minutes. IV Infusion: Start at 100–200 mcg/min; titrate up rapidly (doses > 800 mcg/min may be required). Safety: ACEP policy supports high-dose NTG as both safe and effective for hypertensive HF. Use a dedicated line/short tubing to prevent adsorption issues. 3. Refractory Hypertension If SBP remains > 160 mmHg despite NIPPV and aggressive NTG, add a second vasodilator: Clevidipine: Ultra-short-acting calcium channel blocker (titratable and rapid). Nicardipine: Effective alternative for rapid BP control. Enalaprilat: Consider if the above are unavailable. Troubleshooting & Pitfalls The “Mask Intolerant” Patient Hypoxia is the primary driver of agitation. NIPPV is the best sedative. * Pharmacology: If needed, use small doses of benzodiazepines (Midazolam 0.5–1 mg IV). AVOID Morphine: Data suggests higher rates of adverse events, invasive ventilation, and mortality. A 2022 RCT was halted early due to harm in the morphine arm (43% adverse events vs. 18% with midazolam). The Role of Diuretics In SCAPE, diuretics are not first-line. The problem is redistribution, not volume excess. Diuretics will not help in the first 15–30 minutes and may worsen kidney function in a (relatively) hypovolemic patient. Delay Diuretics until the patient is stabilized and clear systemic volume overload (edema, weight gain) is confirmed. Disposition Admission: Typically requires CCU/ICU for ongoing NIPPV and titration of vasoactive infusions. Weaning: As BP normalizes and work of breathing improves, infusions and NIPPV can be gradually tapered. Take-Home Points Recognize SCAPE: Hyperacute dyspnea + severe HTN. Trust your POCUS (B-lines) over a “clear” CXR. NIPPV Immediately: Don’t wait. It saves lives and prevents tubes. High-Dose NTG: Use boluses to “catch up” to the sympathetic surge. Don’t fear the dose. Avoid Morphine: Use small doses of benzos if the patient is struggling with the mask. Lasix Later: Prioritize afterload reduction over diuresis in the hyperacute phase. Read More
Foundations of Amateur Radio Noise la la la la la hinders if I were a rich man effective a noise annoys an oyster communication but a noisy noise annoys an oyster more. Or said differently, when you're trying to communicate, something that the hobby of amateur radio does in spades, you'll need to deal with a phenomenon called noise. This noise comes in different forms, but the effect is the erection of barriers to successful communication. We refer to the impact of noise as a signal to noise ratio or SNR, the signal being the desired information, the noise the undesired interference. Expressed in decibels so you can deal with a massive range using a small number, an SNR greater than 0 dB means that the signal is stronger than the noise. Building a shack requires that you consider noise in many forms. If you've been a radio amateur for a few moments, your mind is likely to head straight for the hiss, crackle and pop you might hear whilst attempting to communicate on HF, but there's a few other things to discuss. There's all sorts of electronic noise received by your radio. In addition, there's audio noise picked up by your ears, and often your microphone. Then there's the noise that you produce, either from your transmitter into the rest of the building, or from your mouth or speakers into the ears of the people you share the space with. Starting with audio, having a space that you can close the door on is a good way to limit the noise coming into and leaving your shack. An alternative is to wear headphones and generate text to speech, or prerecord your voice, ready for a contact, potentially ideal for contesting, not so much for free form discussion. Another consideration is audio from other radios, including those tuned to a local broadcaster, or aviation frequencies. In other words, if you're transmitting with a microphone, make sure that there's no other audio coming through. In some cases it's even illegal to transmit that audio, but in all cases it's noise that makes communication more difficult. This kind of audio noise mitigation is pretty straightforward. In stark contrast, achieving the same with electronic noise is pretty much a balancing act between budget and effectiveness. The impact of noise is inversely proportional to distance. Essentially, the closer it is, the more impact it has. With that in mind, when you start dealing with noise, start nearby and work your way out. As you eliminate the nearby noise, other sources will become apparent. Without turning this into a noise mitigation class, the process is essentially one of elimination. First locate the noise source, then eliminate it. That's easier said than done. For example, if the noise source is a power supply sitting on your bench, you can turn it off, except if that power supply is the one powering your radio, so perhaps I should say: "attempt to eliminate it" instead. There's plenty of ways to have a go at this and volumetric kilotons of content published on the subject, some of it even useful. In many, but not all cases, noise is an electrical phenomenon that enters via any means possible and you'll need to attempt noise mitigation at multiple points of entry. Obvious sources are the power supply, coax and the antenna connection, the speaker cable, the microphone lead, and if you're using a computer, the USB, serial or Ethernet cable and within the computer itself. Each requiring different approaches. The obvious one is to disable the noise, that is, turn off the offending device. As I said, that might not be an option, but you can replace noisy gear, or place it further away. There's isolation, using tools like ferrites and chokes to stop the noise from reaching your radio. Often in the form of a clip-on blob, you'll find these on things like monitor and USB cables. Place the ferrite as close as possible to the input of your radio. If it's loose on the cable, wind it through the ferrite, the tighter the better. There's software solutions with varying levels of effectiveness. You'll find DSP or Digital Signal Processing knobs and buttons on many radios. They're generally helpful for narrowband repeating noises, like the hum of an electric motor or power supply. There's tools that attempt to impose a noise on your signal that cancels out the noise, anti-noise, if you like, by receiving the noise, inverting it and adding it to your signal, thus, at least theoretically, eliminating it, noise minus noise is silence. This can take the form of a device for noise coming in from the antenna, but it also applies to things like noise cancelling speakers. In audio this is called active noise cancelling. There's also a new crop of noise cancelling software, using A.I. or Assumed Intelligence, that captures your signal, attempts to figure out what's noise and what's not, removes the noise and then feeds it back to you. Your Mileage May Vary and if you break it, you get to keep both parts. Consider your privacy and security implications of sending your audio out the door to be processed. That's not to say that, at least theoretically, effective local Machine Learning models could be created to help with this. I have yet to see one. At some point you'll hopefully reach a place where the noise inside your shack is no longer an issue. Then you'll discover your noisy neighbours, with solar panel inverters, pool pumps, plasma televisions, broadband modems, kids toys and pretty much anything electronic, purchased with no consideration whatsoever in relation to your hobby. I'm mentioning this, because more often than not, you'll have little or no control of those devices. You could cultivate your relationship with your neighbours and discuss your situation, but don't expect compliant hardware to magically solve all your issues. Antenna orientation, horizontal versus vertical might assist, as might placement or distance from the noise source. It's why I suggest that you start this journey with simple antennas, with plenty of room for evaluation and modification to suit the conditions. All this to point out that once you have the perfect shack, your work is only just beginning, but then I suspect that you've already realised this. Like antennas, I will note that noise and its elimination is an integral part of this hobby. It's easy to forget that, whilst you're in the middle of a frustrating hunt for a noise source, and if you like you can think of it as ripples or waves on the pond whilst you're casting a fly. When you discuss this with other amateurs, you'll likely come across terms like QRM and QRN, the last letter describing either Man-made or Natural noise. I'm not sure how helpful the distinction is, but it's there if you need it. One resource worth mentioning is a website called qrm.guru. It has documented processes and tools to discover where noise is coming from and how to go about dealing with it. I'm Onno VK6FLAB
Some great listener feedback, one of the best studies of the year in atrial fibrillation and heart failure, imaging to exclude left atrial thrombus, and a truly amazing first cardiac procedure are the topics John Mandrola, MD, discusses in this week's podcast. This podcast is intended for healthcare professionals only. To read a partial transcript or to comment, visit: https://www.medscape.com/twic I Listener Feedback On Fish Oil and AF Links between omega-3 fatty acids and AF https://www.ahajournals.org/doi/10.1161/CIRCULATIONAHA.121.058596 Omega-3 and risk of AF https://doi.org/10.1016/j.pcad.2024.11.003 DHA vs EPA in reducing vulnerability to AF https://www.ahajournals.org/doi/10.1161/CIRCEP.112.971515 II Withdrawal of HF Therapy AF rhythm control The AF is Gone, the EF Is Up. Can You Stop the HF Meds? https://www.medscape.com/viewarticle/af-gone-ef-can-you-stop-hf-meds-2024a1000h6o Effect of beta-blockers in patient with HF plus AF -- meta-analysis https://pubmed.ncbi.nlm.nih.gov/25193873/ TRED HF Trial 10.1016/S0140-6736(18)32484-X External Link WITHDRAW-AF Trial https://academic.oup.com/eurheartj/article/47/2/250/8238240 III ICE or TEE Before AF Ablation ICE vs TEE in Atrial Fibrillation Ablation https://jamanetwork.com/journals/jamacardiology/fullarticle/2839370 IV The Vector Procedure Percutaneous Aorto-Coronary Bypass Graft: the VECTOR procedure https://www.ahajournals.org/doi/10.1161/CIRCINTERVENTIONS.125.016130 You may also like: The Bob Harrington Show with the Stephen and Suzanne Weiss Dean of Weill Cornell Medicine, Robert A. Harrington, MD. https://www.medscape.com/author/bob-harrington Questions or feedback, please contact news@medscape.net
Ready to upgrade from Technician to General Class and unlock HF privileges? Join our FREE YouTube video series: "Ham Radio General License Mastery" – the ultimate prep course for the FCC Amateur Radio General Exam! Based on the official 2023-2027 General Class Element 3 question pool (valid through June 30, 2027), we break down every subelement with crystal-clear explanations, real-world examples, and bite-sized lessons on key topics like antenna systems, propagation, electrical principles, safety, and operating procedures. No fluff – just what you need to ace the 35-question exam with confidence.Get Your License Manual Here - https://geni.us/7vLlwsKBecome a supporter of this podcast: https://www.spreaker.com/podcast/ham-radio-2-0--2042782/support.
Ready to upgrade from Technician to General Class and unlock HF privileges? Join our FREE YouTube video series: "Ham Radio General License Mastery" – the ultimate prep course for the FCC Amateur Radio General Exam! Based on the official 2023-2027 General Class Element 3 question pool (valid through June 30, 2027), we break down every subelement with crystal-clear explanations, real-world examples, and bite-sized lessons on key topics like antenna systems, propagation, electrical principles, safety, and operating procedures. No fluff – just what you need to ace the 35-question exam with confidence.Get Your License Manual Here - https://geni.us/7vLlwsKBecome a supporter of this podcast: https://www.spreaker.com/podcast/ham-radio-2-0--2042782/support.
In this episode, our very own Paul Braun, WD9GCO, our show announcer, becomes the special guest. Paul tells us all about his big POTA rove and how he operated HF remotely from a cruise ship. This show also features a large crowd of regulars with an extended workbench segment.
Topics discussed on today's show: Heidi's Vacation, Take Down The Tree, Gay Hockey, Vaccine Recommendations, Inappropriate Laughter, Heidi's New Years Resolution, GLP1's, Super Bowl Ranking, Stranger Things, Waymo, Polymarket, Betting on HF, Smart Legos, Gut Microbiome, Word Sandwich, Turning 50 Tunes, KNAC 40th Anniversary, and Apologies.
Harry Anderson is the only person to have both flown solo and sailed solo to all seven continents. He is also the author of "Sailing 7 Continents Solo." We talk about his route, his boats (a Bavaria 37 and an Alures 40.9), sailing with a centerboard, heaving-to, HF radio, VHF with wireless remote handset, anchoring, shore lines, generating electricity, Deception Island, getting permits to go to Antarctica, katabatic winds, Puerto Montt, Cocos Keeling, friendly people, favorite places, Namibia, beautiful moments, safety, heaters, the NW passage, his books, and more. photos and links are on the podcast shownotes page support the show through Patreon browse or list sailboats for sale get remote electrical help from Meridian Marine Electrical
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