Podcasts about khz

Foundations of Amateur Radio Recently I came across a series of strident posts about the injustice associated with a non-amateur service using the 70cm band. Complete with links to discussions, spectrum plots, angst and even incoherent outrage, all related to the notion that whomever "allowed" this user to transmit on this band was clearly incompetent. Except, that this is probably not the case, or the full story. So, what's going on and why are people incensed? This all started at least six years ago. Since then AST SpaceMobile has deployed seven low Earth orbit satellites and used the 70cm band to communicate with them. Although in the trial phase, there's plans for an additional 243 satellites, and there's at least one other company playing in the same space, Atmos Space Cargo. The outcry from amateurs is around the commercial use of "their" 70cm amateur band. It's an emotional statement, but what is the reality? Before I dig in, let's set some terms. Radio frequencies are globally coordinated because electromagnetism doesn't care about sovereign borders. This coordination is conducted at the United Nations by a body called the ITU, the International Telecommunications Union. Within that body, amateur radio gets a seat at the table from an organisation called the IARU, the International Amateur Radio Union. For the purposes of the ITU, the world is divided into three, Region 1, or essentially Europe, Russia and Africa, Region 2, the Americas and Greenland, and Region 3, the rest of the world. There's more to it, for example, Antarctica is split across all three, but for the moment, that really doesn't matter. Of interest is that the band plan, the agreements that outline which frequencies are set aside for what service, might be defined differently across each of those three regions. To add complexity, each country can be granted exceptions. I don't know the exact mechanics of how this is achieved, but I can guarantee that there's lots of haggling and foot stomping, diplomatically of course. If you're curious how I come to that observation, just look at the absurd list of exceptions associated with each band plan allocation. Further complexity is added by the fact that not all allocations occupy the same frequency range. For example, in Region 1, the 2m band for Amateurs exists between 144 and 146 MHz, in Region 2 and 3 it's between 144 and 148 MHz. Within an allocation there is the concept of shared and exclusive priorities. These determine who "wins" if two stations with a different service are transmitting on the same frequency. Essentially, a secondary user may not interfere with a primary user and a tertiary user may not interfere with either a secondary or a primary user and so on. A primary user can pretty much do what they want, as long as they stay within the allocation and don't interfere with other primary users. As a result, the order in which services are listed, matters. An exclusive allocation doesn't have to be shared at all. Between regions these service priorities might not be the same. For example, in Region 1 between 430 and 432 MHz is allocated to Amateurs and Radio Location, but in Region 2 and 3 it's between Radio Location and Amateurs. So an amateur using that frequency whilst in Region 1 would be a primary user, but in Region 2 or 3 they wouldn't. As an added wrinkle, for example in Australia, that slice is "primarily for the purposes of defence and national security", even though Radio Location is the primary service and Amateurs the secondary one. As a bonus, amateurs in Australia have access to 420.8 to 421.2 MHz as a secondary service, even though the ITU designates this as Fixed, then Mobile, except Aeronautical Mobile, and then Radio Location. Although amateurs are a secondary service, they come after the Department of Defence who are the primary users for those frequencies in Australia. Between 420 and 430 MHz, and from 440 to 450 MHz in several countries, Australia included, the Amateur Service is explicitly designated as a secondary service even though the band plan doesn't actually show this. If you're confused, you're in good company, since this tapestry of regulation isn't as straightforward as the "70cm band is an amateur band", in fact, I'd go so far as to say that it's not an amateur band at all, except perhaps in Region 1 between 430 and 440 MHz where Amateur is designated as the non-exclusive primary service. Back to the blow up. AST was at one time authorised to use 430 to 440 MHz for trial purposes by a regulator in Region 2, the FCC, the United States Federal Communications Commission. I suspect that at the time, the Blue Walker 1 nano satellite was experimental and the approval made sense. You can argue that whomever initially allowed this made a mistake, but, reality is whatever the regulator says it is, unless someone at the ITU objects. It appears that the FCC has since been attempting to make AST comply, instead with billions of dollars at stake, AST continues to apply for more spectrum, which they apparently originally filed with the ITU through the Papua New Guinea administration. It's unclear if the FCC has since capitulated. There is evidence that the new commercial AST satellites are transmitting outside of their authorisation, euphemistically described as "IARU Uncoordinated". Ask yourself, how is it possible, or even allowable, that a regulator permits use of radio spectrum outside its borders and what penalties and remedies exist? The ground stations using these disputed frequencies are all outside the USA. One of the five ground stations is in my own city, Perth in Western Australia. I haven't noticed any discussion on this topic within my local community, even though this has been brewing for years. It does raise a bigger question. How is the band plan enforced? I mean, the 40m band is pretty much unusable in VK6 between sunset and midnight thanks to the fishing fleet of our northern neighbours, it's been like that for as long as I've been an amateur and I expect no change during my lifetime. How is this satellite fleet operating on the 70cm band any different? That said, I cannot help but wonder, will the originally authorised 50 kHz signal every eight seconds, not for phone calls to space, and only for 24 hours after launch or in the unlikely event of an emergency, for Telemetry, Tracking and Command, actually cause issues, or will it be an opportunity for radio amateurs to learn how to deal with interference? Speaking of interference and considering the allocated services, who is interfering with whom here and what priorities and remedies exist? Recently I talked about promotion, and the lack thereof, across our community. This is an example of promotion, and despite the uproar this week, a very poor example at that. Searching for "AST SpaceMobile", the oldest post I could find was on the German AMSAT, or Amateur Satellite forums back in September 2022 by Peter DB2OS who has been very active on this matter. His original post was in English, but went on to discuss the issue in German. I only found it after specifically looking for the names of the organisation involved. Peter's posts supplied links to many of the documents I consulted. Despite having links to specific pages, I found no search results for "AST SpaceMobile" on the websites for the regulators in the US, UK, Germany or Australia, and none on the ARRL, RSGB or DARC. The WIA produced two glowing news reports around the beginning of 2023 about this wonderful new mobile phone service. No mention of the 70cm band. The only active discussions appear to be the German and UK AMSAT forums, that and all the glowing investor posts. In other words. This is the equivalent of publishing the information at your local planning department in Alpha Centauri, 50 years before the event and hoping for a good outcome. As a potential path forward, in January 2023 the German regulator forced AST to shut off 70cm operations whilst it was within radio visibility of Germany. I don't know if that's still in effect, or how and if it's being enforced. It appears that AST has been lobbying for the use of this spectrum for a long time, not just the 340 page submission made last month. For example, NASA made its first response to this satellite constellation in October 2020. It appears that the WIA responded four years later, but I have yet to see it, and this week the Bulgarian Federation of Radio Amateurs, the ARRL, and RSGB added theirs. The IARU issued a statement this week too. The fact that we're still arguing about it over half a decade later is a good indication that how we're responding as a global community is clearly ineffectual. Perhaps that is what we should be arguing stridently about. So, where do you stand on this? Should something be done about this, and if-so, what, and more importantly, how? I'm Onno VK6FLAB

Radiové vlny dosáhnou až do nejvzdálenějších koutů naší planety. Nejodlehlejším místem, kde si vysílání Českého rozhlasu posluchač prokazatelně naladil je město Christchurch na Jižním ostrově Nového Zélandu. V lednu 2003 tam na frekvenci 9430 KHz vyslechl Bob Boundy půlhodinovou anglickou zpravodajskou relaci.

Radiové vlny dosáhnou až do nejvzdálenějších koutů naší planety. Nejodlehlejším místem, kde si vysílání Českého rozhlasu posluchač prokazatelně naladil je město Christchurch na Jižním ostrově Nového Zélandu. V lednu 2003 tam na frekvenci 9430 KHz vyslechl Bob Boundy půlhodinovou anglickou zpravodajskou relaci.

Radiové vlny dosáhnou až do nejvzdálenějších koutů naší planety. Nejodlehlejším místem, kde si vysílání Českého rozhlasu posluchač prokazatelně naladil je město Christchurch na Jižním ostrově Nového Zélandu. V lednu 2003 tam na frekvenci 9430 KHz vyslechl Bob Boundy půlhodinovou anglickou zpravodajskou relaci.

Radiové vlny dosáhnou až do nejvzdálenějších koutů naší planety. Nejodlehlejším místem, kde si vysílání Českého rozhlasu posluchač prokazatelně naladil je město Christchurch na Jižním ostrově Nového Zélandu. V lednu 2003 tam na frekvenci 9430 KHz vyslechl Bob Boundy půlhodinovou anglickou zpravodajskou relaci.

Radiové vlny dosáhnou až do nejvzdálenějších koutů naší planety. Nejodlehlejším místem, kde si vysílání Českého rozhlasu posluchač prokazatelně naladil je město Christchurch na Jižním ostrově Nového Zélandu. V lednu 2003 tam na frekvenci 9430 KHz vyslechl Bob Boundy půlhodinovou anglickou zpravodajskou relaci.

Radiové vlny dosáhnou až do nejvzdálenějších koutů naší planety. Nejodlehlejším místem, kde si vysílání Českého rozhlasu posluchač prokazatelně naladil je město Christchurch na Jižním ostrově Nového Zélandu. V lednu 2003 tam na frekvenci 9430 KHz vyslechl Bob Boundy půlhodinovou anglickou zpravodajskou relaci.

Radiové vlny dosáhnou až do nejvzdálenějších koutů naší planety. Nejodlehlejším místem, kde si vysílání Českého rozhlasu posluchač prokazatelně naladil je město Christchurch na Jižním ostrově Nového Zélandu. V lednu 2003 tam na frekvenci 9430 KHz vyslechl Bob Boundy půlhodinovou anglickou zpravodajskou relaci.

Radiové vlny dosáhnou až do nejvzdálenějších koutů naší planety. Nejodlehlejším místem, kde si vysílání Českého rozhlasu posluchač prokazatelně naladil je město Christchurch na Jižním ostrově Nového Zélandu. V lednu 2003 tam na frekvenci 9430 KHz vyslechl Bob Boundy půlhodinovou anglickou zpravodajskou relaci.

Radiové vlny dosáhnou až do nejvzdálenějších koutů naší planety. Nejodlehlejším místem, kde si vysílání Českého rozhlasu posluchač prokazatelně naladil je město Christchurch na Jižním ostrově Nového Zélandu. V lednu 2003 tam na frekvenci 9430 KHz vyslechl Bob Boundy půlhodinovou anglickou zpravodajskou relaci.

Radiové vlny dosáhnou až do nejvzdálenějších koutů naší planety. Nejodlehlejším místem, kde si vysílání Českého rozhlasu posluchač prokazatelně naladil je město Christchurch na Jižním ostrově Nového Zélandu. V lednu 2003 tam na frekvenci 9430 KHz vyslechl Bob Boundy půlhodinovou anglickou zpravodajskou relaci.

Radiové vlny dosáhnou až do nejvzdálenějších koutů naší planety. Nejodlehlejším místem, kde si vysílání Českého rozhlasu posluchač prokazatelně naladil je město Christchurch na Jižním ostrově Nového Zélandu. V lednu 2003 tam na frekvenci 9430 KHz vyslechl Bob Boundy půlhodinovou anglickou zpravodajskou relaci.

www.iotusecase.com#PredictiveMaintenance #EdgeComputing #CloudTransformationIn Episode 177 of the IoT Use Case Podcast, host Ing. Madeleine Mickeleit speaks with Soroush Khandouzi, Cloud Solution Engineer at KNF, and Florian Stein, Domain Lead for Cloud Transformation and Data Infrastructure at b.telligent. The focus is on a joint IIoT project for pump lifetime monitoring, showing how traditional mechanical engineering companies are using intelligent data to future-proof their products – from edge integration to a scalable cloud setup.Podcast SummaryLifetime monitoring, predictive maintenance, and edge integration – how KNF is driving digitalization in mechanical engineering This episode explores a real-world digitalization project by pump manufacturer KNF, developed together with IoT partner b.telligent. The goal: replace manual testing and documentation with an automated system for long-term pump monitoring – powered by an edge-to-cloud architecture based on Azure IoT and custom-built Data Acquisition Controllers (DAC). The challenge: Until now, key parameters like pressure, temperature, and current were recorded manually – sometimes daily, and over several years. With four production sites worldwide, fragmented systems made consistent evaluation nearly impossible. The solution: A scalable IoT infrastructure built on Azure IoT Edge, near-real-time data transmission, a burst mode for high-frequency measurements (up to 10 kHz), and visualization in Grafana. In addition to automating centralized testing for more than 1,500 pumps, the system enables cross-site monitoring, AI-driven analysis, and predictive maintenance. The key insight: Data is not just collected – it's made actionable in real time, enabling faster development cycles, higher product quality, and entirely new service offerings. This episode is a must-listen for anyone looking to scale IIoT projects – from R&D to testing and production. 

Photo of Taipei Photo by TangChi Lee Many thanks to SRAA contributor Kanwar Sandhu, who shares the following test broadcast recording of Radio Taiwan International recorded on June 29, 2025, at 1730 UTC on 11995 kHz:

Foundations of Amateur Radio Recently I was given some radio data captured on the 40m band. Using a piece of software called "Universal Radio Hacker", I attempted to decode it. At the time I thought that this might be Morse code, since then I've been told by someone who has been using Morse longer than I've been alive, that it isn't. I shared the data on my VK6FLAB GitHub repository where you can download it and see what you learn, and perhaps repeat what I did, or better still, improve on it. Over the years I've talked a little about how Software Defined Radio or SDR works, essentially it's a glorified Analogue to Digital converter, much like the sound card in your computer, which does the same, albeit at a much lower frequency. As it happens, you can represent the signal that comes into your radio antenna as a series of values. Essentially, the stronger the signal, the bigger the number, the weaker the signal, the lower the number. Let's talk about the characteristics of this signal. It consists of two parallel signals, in opposition to each other. The first signal jumps intermittently between 7 kHz and 40 kHz, where the second jumps between -7 kHz and -40 kHz. The recording is marked 7.06 MHz, so if we think of that as the central frequency, the whole signal sits between 7.02 and 7.1 MHz. This 80 kHz wide signal is not something you'd typically be able to hear using a standard amateur radio receiver which tops out at about 3 kHz bandwidth. It's so wide that you couldn't even hear more than one of the four tones at the same time. Randall VK6WR, who supplied the recording, spotted it on a waterfall display showing a chunk of radio spectrum, in fact, a $25 RTL-SDR dongle could receive this signal. Aside from the fact that this is a really wide signal, well at least in traditional amateur radio terms, it was interesting in that it was heard on the 40m band. As it happens, just after I shared my initial exploration, I was told by several other amateurs that they had heard the signal. I even saw it on a WebSDR in India and attempted to record it, but failed. As it happens, a few weeks ago, I was playing with something called "CAN Bus", or Controller Area Network, a technology that was designed in 1983 and is used all over cars for things like sensors for speed, engine temperature, oxygen level, detonation timing and anything else that's happening inside a car. You might know the end-user view of this called OBD2 or On Board Diagnostics, second generation. I was looking into it because my car has been acting up and I've been trying to track down the root cause. Anyway, I learned that CAN Bus is implemented using something neat, "differential signalling", where two wires each carry the same, but opposite signal, so they can be combined to ensure that in an electrically noisy environment like a car, the information still gets where it needs to go. Seeing the radio signal Randall shared, reminded me of this. Noise immunity is a useful attribute in digital HF communication, so I can understand why it was done like this, but it also means that either signal was sufficient to start to decode the information. We can use Universal Radio Hacker to show us only half the signal using a band pass filter. I then decided that the 40 kHz frequency was "on" and represented by a "one" and the 7 kHz frequency was "off", represented by a "zero". Of course that's entirely arbitrary, there's no reason that it cannot be the other way around, but for our purposes it doesn't matter at this time. That said, we don't yet have enough to decode the actual signal. We need to figure out how long each switch, or bit, lasts, because two zero's side-by-side or two ones side-by-side would look like a long "off" or a long "on". Using that logic, you could also say that the shortest possible duration for a 40 kHz or a 7 kHz tone would represent a single "one" or a single "zero". Of course, this is a simplified view of the world. For example, the data file contains more than thirteen and a half million bytes. Half of those are for the I in I/Q, the other for the Q. I'm purposefully glossing over a bunch of stuff here, specifically the notion of so-called I/Q signals, that's for another time. In computing a single byte can represent 256 different values. It means that if the signal is represented by a single byte, a voltage from the antenna at maximum amplitude can be represented as 255 and the minimum amplitude as 0. As it happens, voltages go up and down around zero, so, now we're only using half a byte, 127 for maximum, -128 for minimum. If we use two bytes, we get significantly more resolution, -32,768 as the minimum and 32,767 as the max. A little trial and error using another tool, "inspectrum", told me that the data was organised as two bytes per sample. Which brings the next point. How many samples per signal? Said differently, we're measuring the antenna voltage several times per second, let's say twice per second. If a tone of 7 kHz lasts a second, then we get two samples showing 7 kHz. If it lasts half a second, we only get one. As it happens, we're measuring over 22,000 times per second and using the cursor feature on Universal Radio Hacker, we can determine that each signal lasts 2,500 samples. It's roughly a rate of 100 bits per second. The "inspectrum" tool puts it at 91.81 Baud. It's not a standard Baud rate, sitting between 75 and 110 Baud. Using Universal Radio Hacker, I was able to decode 1,416 bits. You'll find them on my GitHub page next to the signal. Now for the fun. What does it mean? I started with looking for structure, by looking for zeroes. In short order I discovered several sequences of zero, then I noticed that there appeared to be a repeating pattern. After some trial and error, using the "grep" and "fold" commands on my Linux terminal, I discovered that the pattern repeats, more or less, every 255 bits. I say more or less, because there are a few bits that are not the same. I suspect that this is a decoding error which could potentially have been eliminated by using the noise immunity features associated with the differential signalling, but I don't yet know how to do that. Here's what I think I'm looking at. It appears to be a signal that's a unique identifier, specifically so that it can be used to synchronise two things together. In this case, I suspect that it's an over the horizon radar and the sequence is used to synchronise the transmitter and the receiver. I think that the signal strength variations are what allows reflections to be measured and I suspect that the actual transmitter and receiver are using more than two bytes to represent each sample, but I'm speculating. If you have an alternative explanation, I'm all ears. I'm Onno VK6FLAB

Many thanks to SRAA contributor Dan Greenall, for sharing the following recording and notes:Broadcaster: All India Radio 1971Frequency: 11.810 MHzReception location: Ancaster, Ontario, CanadaReceiver and antenna: Hallicrafters S-52 using a longwire antennaNotes: This transmission to southeast Asia from the general overseas service of All India Radio was heard surprisingly well in Ancaster, Ontario, Canada on 11810 kHz shortwave back in 1971. Their familiar interval signal is heard at first, followed by sign on in English.

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Many thanks to SRAA contributor Dan Greenall, who shares the following recording and notes:Broadcaster: WREC Radio Free East Coast Pirate 1997Date of recording: August 31, 1997Frequency: 6.955 MHzReception location: Thamesford, Ontario, CanadaReceiver and antenna: Panasonic RF-3100 and longwire antennaMode: Single Side BandNotes: Some pirate radio stations used to use an interval signal. This is a recording of shortwave pirate broadcaster WREC Radio Free East Coast beginning a broadcast on August 31, 1997. It was made in Thamesford, Ontario, Canada and you will hear an interval signal followed by a song "Yo ho, yo ho A Pirate's Life for Me", then station identification. Receiving equipment was a Panasonic RF-3100 hooked up to a longwire antenna and the station was heard on 6955 kHz.

Many thanks to SRAA contributor, Dan Greenall, who shares the following recording and notes:Broadcaster: Voice of Nigeria, Nigerian Broadcasting Corporation 1971Frequency: 7.275 MHzReception location: Ancaster, Ontario, CanadaReceiver and antenna: Hallicrafters S-52 using a longwire antennaNotes: Here is a recording of the distinctive rapid drum beat interval signal used by the Voice of Nigeria in Lagos on shortwave, made sometime in 1971. A voice announcement follows, as they begin a program in the French language. In the second recording, you will hear their interval signal, anthem, and sign on in English. This recording was made circa 1971 on 7275 kHz.

Many thanks to SRAA contributor Dan Greenall, who shares the following recording and notes:Broadcaster: Trans World Radio, Meyerton, South Africa 1990'sFrequency: 7.215 MHzReception location: Thamesford, Ontario, CanadaReceiver and antenna: Panasonic RF-3100 and longwire antennaNotes: Trans World Radio used to air some of it's programs via the SENTECH transmitter at Meyerton, South Africa. Here is a recording of the station in the late 1990's, including identification in English but no transmitter site given. This was made from my receiving post in Thamesford, Ontario, Canada, likely on 7215 kHz shortwave. This transmitter was shut down in March 2019.

SteelSeries ซึ่งเป็นแบรนด์อีสปอร์ตระดับโลกที่ผสานรวมโลกของเกมและวัฒนธรรมเข้าด้วยกัน และเป็นผู้นำระดับโลกด้านหูฟังเกมมิ่งระดับพรีเมียม ได้ประกาศขยายไลน์ผลิตภัณฑ์ด้วยการเปิดตัวหูฟังและเมาส์รุ่นใหม่ในประเทศไทย ผลิตภัณฑ์เหล่านี้ถูกออกแบบมาเพื่อตอบสนองความต้องการของเกมเมอร์ในปัจจุบัน โดยเฉพาะอย่างยิ่งผู้เล่นคอนโซลและ Gen Z โดยเน้นที่ประสิทธิภาพ ความสบาย และราคาที่เข้าถึงได้ภาพรวมตลาดเกม:SteelSeries ตระหนักถึงการเติบโตอย่างต่อเนื่องของวงการเกม โดย Newzoo คาดการณ์ว่าจะมีจำนวนเกมเมอร์ทั่วโลกมากถึง 2.9 พันล้านคนภายในไตรมาสแรกของปี 2025 และตลาดเกมคอนโซลก็กลับมาเติบโตอย่างต่อเนื่องจนถึงปี 2027 โดยได้รับแรงผลักดันจากเกมฟอร์มยักษ์และคอนโซลรุ่นใหม่หูฟัง SteelSeries Arctis Nova 3 Wirelessหูฟังรุ่นนี้ถูกออกแบบมาเพื่อ "ปลดล็อกระบบเสียงได้รอบทิศทางแบบ 360°" โดยเฉพาะสำหรับเกมเมอร์คอนโซล เพื่อให้ "รู้ก่อนด้วยเสียงรอบทิศทาง ชนะทุกเกม"คุณสมบัติเด่นและข้อมูลสำคัญ:Custom Nova Speaker Drivers: "ไดรเวอร์ลำโพงแม่เหล็กนีโอไดเมียมประสิทธิภาพสูงที่ได้รับการออกแบบและปรับแต่งพิเศษจาก SteelSeries เพื่อมอบคุณภาพเสียงเกมมิ่งระดับสุดยอด พร้อมเสียงเบสที่หนักแน่น และดีไซน์เฉพาะเพื่อเก็บรายละเอียดเสียงได้สูงสุด" รองรับ 360° Spatial Audio (รวมถึง Tempest 3D Audio สำหรับ PS5 และ Microsoft Spatial Sound)The Mobile Arctis App: นี่คือ "แอปพลิเคชันมือถือที่ให้เกมเมอร์ควบคุมเสียงได้แบบเรียลไทม์ พร้อมพรีเซ็ตเสียงที่ออกแบบมาเฉพาะสำหรับแต่ละเกมกว่า 200 รายการ" พัฒนาโดยวิศวกรเสียงและนักพัฒนาอีสปอร์ต ผู้ใช้สามารถสลับพรีเซ็ตได้ทันทีในเกมยอดนิยม เช่น Call of Duty, Fortnite, Grand Theft AutoQuick-Switch Wireless: รองรับการเชื่อมต่อไร้สายความเร็วสูง 2.4GHz สำหรับการเล่นเกม และ Bluetooth 5.3 สำหรับการใช้งานทั่วไป สามารถสลับได้ด้วยปุ่มบนหูฟังCross-Platform Gaming: เข้ากันได้กับ PlayStation, Xbox, Nintendo Switch, PC, Meta Quest, เครื่องเล่นเกมพกพา และอุปกรณ์ USB-C อื่นๆ เพียงแค่สลับใช้ดองเกิล USB-Cอายุการใช้งานแบตเตอรี่และการชาร์จเร็ว: "ชาร์จไว 15 นาที = เล่นได้ 9 ชั่วโมง" และชาร์จเต็มสามารถใช้งานได้สูงสุด "30+ ชั่วโมงในโหมด 2.4GHz และ 40+ ชั่วโมงในโหมด Bluetooth"ไมโครโฟน ClearCast 2.X: ไมค์ที่อัปเกรดใหม่ด้วยเทคโนโลยีแบนด์วิดท์สูง "เพิ่มคุณภาพเสียงพูดในระดับมืออาชีพ" และ "ให้รายละเอียดเสียงคมชัดเต็มทุกย่านความถี่" (32 kHz/16 bit)ดีไซน์: "น้ำหนักเบาเพียง 260 กรัม" "โครงสร้างที่แข็งแรง ยืดหยุ่น" ที่ครอบหูเมมโมรี่โฟมระบายอากาศ และแถบคาดศีรษะผ้าเพื่อความสบายตลอดวันราคา: 4,490 บาท (มีการจัดโปรโมชั่นพิเศษสำหรับลูกค้า AIS ในราคา 3,990 บาท และโปรโมชั่น bundle กับเมาส์ Rival 3 Gen 2)การวางจำหน่าย: มีจำหน่ายที่ SteelSeries Official Store และตัวแทนจำหน่ายชั้นนำหลายแห่งเมาส์ซีรีส์ Rival 3 Gen 2 ถูกเปิดตัวในโอกาสครบรอบ 5 ปีของ Rival 3 โดยมีแนวคิด "Affordable Luxury" ที่นำเสนอ "เกมมิ่งเกียร์ระดับพรีเมียมในราคาที่เข้าถึงได้" มีสีใหม่ 4 สไตล์ (Lavender, Aqua, White, Black) เพื่อ "เอาใจวัยรุ่น Gen Z"คุณสมบัติเด่นและข้อมูลสำคัญ (Rival 3 Gen 2 – มีสาย):ความเร็วในการคลิก: "1.35 มิลลิวินาที" ซึ่งเป็น "ความเร็วเหนือชั้นที่สุดในระดับเดียวกัน"เซ็นเซอร์: TrueMove Core ความละเอียด 8,500 DPIความทนทาน: สวิตช์กลไกคุณภาพสูงรองรับการคลิกได้ "60 ล้านครั้ง"น้ำหนัก: เบาเพียง 77 กรัมดีไซน์: แสงไฟ SteelSeries Prism แบบ 360 องศาคุณสมบัติเด่นและข้อมูลสำคัญ (Rival 3 Wireless Gen 2 – ไร้สาย):เซ็นเซอร์: TrueMove Air ความละเอียดสูงสุด 18,000 DPI พร้อมรองรับการเร่งความเร็ว 40gความเร็วในการคลิก: "1.9 มิลลิวินาที"เทคโนโลยี Quantum 2.0 Dual Wireless: รองรับการเชื่อมต่อผ่านดองเกิล USB ความเร็วสูง (สำหรับการเล่นเกม) และ Bluetooth 5.0 (สำหรับการใช้งานทั่วไป)อายุการใช้งานแบตเตอรี่: "นานสูงสุด 45–200 ชั่วโมงเมื่อใช้โหมด 2.4GHz และสูงสุดถึง 450 ชั่วโมงในโหมด Bluetooth" ใช้ถ่าน AAA เพียงก้อนเดียวน้ำหนัก: 95–106 กรัม (เบาสำหรับการเล่นเกมที่ยาวนาน)สีใหม่: Aqua, Lavender, White, และ Blackราคา:Rival 3 Gen 2 (มีสาย): 1,490 บาทRival 3 Wireless Gen 2 (ไร้สาย): 2,190 บาทมีโปรโมชั่นพิเศษเมื่อซื้อพร้อม Arctis Nova 3 Wirelessการวางจำหน่าย: มีจำหน่ายที่ SteelSeries Official Store และตัวแทนจำหน่ายชั้นนำหลายแห่ง

Consider supporting my show with a donation via PayPal to vorwinfo@gmail.com it needs your help to survive! Main Broadcasts: 4840 kHz at 2 AM Eastern every Saturday Morning (New Show) 4840 kHz at 12 AM Eastern every Monday Morning (New Show) Repeat Airings: 5950 kHz at 7 PM Eastern every Saturday Evening (Rebroadcast) 5950 kHz at 8 PM Eastern every Sunday Evening (Rebroadcast) 17810 kHz at 11:30 AM Eastern every Monday Morning (South Asia Program) 5850 kHz at 4 AM Eastern every Tuesday Morning (Rebroadcast) 15770 kHz at 4 PM Eastern every Tuesday Afternoon (Rebroadcast) 9455 kHz at 7 PM Eastern every Wednesday Evening (Rebroadcast) 9395 kHz at 10 PM Eastern every Wednesday Evening (Rebroadcast) 15770 kHz at 12 PM Eastern every Thursday Afternoon (Rebroadcast) 9955 kHz at 6 PM Eastern every Thursday Evening (Rebroadcast)

Many thanks to SRAA contributor Paul Walker, who shares the following recordings of Vatican Radio made on April 26, 2025. The first recording, pre-funeral in French, was recorded at 07:36 UTC on 17520 kHz: The second recording, made during the funeral in English, was recorded at 08:18 UTC on 17540 kHz:

Sumario Informe Enigma Dirige y Presenta: Jorge Ríos Escúchanos cada viernes de 23:00h a 01:00h en directo en Radio Platja d'Aro. Síguenos a través de nuestras redes sociales o contacta con nosotros en el siguiente correo electrónico: informeenigmapodcast@gmail.com Contacto Yolanda Martínez: 647552954 Esta semana en el programa, nos sumergimos en tres temas fascinantes que cruzan los límites de lo conocido y lo inexplicable, explorando desde los misterios ocultos en las frecuencias de radio, hasta los secretos más profundos del universo energético. La UVB 76, la emisora de radio fantasma más importante y enigmática del mundo, nos ha dejado sus últimos mensajes, una serie de señales crípticas que siguen sin explicación clara. Con Hugo Fernández, nos adentramos en los misterios detrás de la frecuencia 4625 kHz, donde la radio transmite extraños zumbidos, códigos y mensajes enigmáticos, dejando a la comunidad de oyentes y expertos en vilo. ¿Qué hay detrás de estos susurros? ¿Por qué siguen emitiendo después de más de 40 años sin descanso? Además, hablamos del apagón eléctrico que sacudió España, un evento que paralizó el país durante horas. ¿Qué causó este colapso energético masivo? Javier del Valle, nos compartirá su análisis detallado, y aunque muchos apuntan a fallos técnicos, quizá podrá haber algo mucho más profundo y oculto detrás de esta crisis. ¿Fue solo un accidente? Y para cerrar, nos adentramos en el campo de la mente y el poder personal con Yolanda Martínez, quien nos reveló los secretos de la Ley de la Atracción. Un concepto que muchos han escuchado, pero pocos entienden en su profundidad. Yolanda explicó cómo nuestras creencias, emociones y pensamientos pueden atraer lo que deseamos, y cómo aplicar correctamente esta ley para transformar nuestra realidad. ¿Es la Ley de la Atracción realmente un poder universal, o es solo una cuestión de psicología positiva? Tres temas que parecen distantes entre sí, pero todos comparten una cosa: nos invitan a cuestionar la realidad tal y como la conocemos. No te pierdas este programa, donde los límites entre lo real y lo sobrenatural se desdibujan ante tus ojos. ¿Quieres anunciarte en este podcast? Hazlo con advoices.com/podcast/ivoox/277207

Many thanks to SRAA contributor Tom Laskowski, for sharing the following recording and notes:Broadcaster: Radio AustraliaDate of recording: July 27, 1986Starting time: 0300Frequency: 17.795 MHzRX location: South Bend, IndianaReceiver and antenna: Sony ICF 2001Notes: Here is a recording of Radio Australia's DX program called Talkback from July 27, 1986. I believe this was recorded around 0300 UT on 17795 kHz when Australia used to come in well in the evenings here.Some of the program highlights are:Review of the 1986 ANARC Convention, which was held in Montreal, Canada. Hosted by Radio Canada International, it attracted over 200 attendees. New Zealand's Arthur Cushen was the Guest of Honor for the event.

rWotD Episode 2934: KATD Welcome to Random Wiki of the Day, your journey through Wikipedia's vast and varied content, one random article at a time.The random article for Friday, 16 May 2025, is KATD.KATD (990 AM) is a radio station that rebroadcasts San Francisco station KIQI. Licensed to Pittsburg, California, the station serves the Sacramento Valley. The station is currently owned by Multicultural Broadcasting. KATD is partnered with the Oakland Athletics and broadcasts night and weekend home games.990 AM is a Canadian clear-channel frequency. KATD protects the nighttime signal of CBW in Winnipeg by reducing power and using a signal nulled to the northeast. CBW and CBY are the Class A stations on 990 kHz.This recording reflects the Wikipedia text as of 01:16 UTC on Friday, 16 May 2025.For the full current version of the article, see KATD on Wikipedia.This podcast uses content from Wikipedia under the Creative Commons Attribution-ShareAlike License.Visit our archives at wikioftheday.com and subscribe to stay updated on new episodes.Follow us on Mastodon at @wikioftheday@masto.ai.Also check out Curmudgeon's Corner, a current events podcast.Until next time, I'm neural Joanna.

This week's EYE ON NPI is a follow up to one we did a few years ago on the similarly-named BQ25792 (https://blog.adafruit.com/2021/05/06/eye-on-npi-ti-bq25792-i2c-controlled-1-4-cell-5a-buck-boost-battery-charger-eyeonnpi-adafruit-digikey-adafruit-digikey-txinstruments/). The BQ25798 (https://www.digikey.com/short/vnr279pz) builds on the '92 by adding selectable dual inputs and true MPPT solar support. This chip is inexpensive, powerful and can handle almost any battery and power source matching you desire. Let's look at some specifications: High power density, high integration buck-boost charger for 1-4 cell batteries supporting USB PD 3.0 profile – Integrates four switching MOSFETs, BATFET – Integrates input and charging current sensing Highly efficient – 750-kHz or 1.5-MHz switching frequencies – 5-A charging current with 10-mA resolution 96.5% efficient: 16-V battery at 3A from 20V Supports a wide range of input sources Autonomously sampled open circuit voltage (VOC) maximum power point tracking (MPPT) for charging from a photovoltaic panel – 3.6-V to 24-V wide input operating voltage range with 30-V absolute maximum rating – Detects USB BC1.2, HVDCP and non-standard adapters Dual-input power mux controller (optional) Narrow voltage DC (NVDC) power path Backup Mode with Ultra-fast switchover to adjustable voltage Powers USB port from battery (USB OTG) – 2.8-V to 22-V OTG output voltage with 10-mV resolution to support USB-PD PPS – OTG output current regulation up to 3.32 A with 40-mA resolution Flexible autonomous and I2C mode for optimal system performance Integrated 16-bit ADC for voltage, current, and temperature monitoring Like the '92, the BQ25798 (https://www.digikey.com/short/vnr279pz) supports any size battery. We have lots of battery packs in the Adafruit shop, and in particular we use 1S batteries – if there are more batteries, they are wired in series. But there's lot of folks who are building robotics that require higher voltages, so they have 2S, 3S, or 4S batteries. This charger can handle any of 'em, and you can configure the battery pack size using a simple resistor on the PROG port. In this case it also allows the chip to run in 'standalone' mode without the use of I2C to configure. The biggest improvement you get with the BQ25798 (https://www.digikey.com/short/vnr279pz) is true solar MPPT support. The BQ25792 had VINDPM and IINDPM – the ability to track the input voltage to make sure it is not drooping from overdraw. While this lets you get pretty-close-to-MPPT it isn't true power-point-tracking which requires perturbation around the voltage to adjust as light and temperature affect the solar panel's efficiency. The '98 does this 'right' and even has a K Factor adjustment register - you can tweak this to get the best results based on different weather/temperature (https://www.ti.com/video/6287049638001)- or stick to the default value for good results. Another new feature is 'selectable dual-inputs' what this means if you can set up two power inputs - say DC plug and Solar - and then have the chip switch between them. This is particularly useful because you can't just use two OR'ing diodes to select the power source: the solar panel might have a higher initial open-voltage but can't supply as much current as a DC plug. I2C lets you select which one is priority! The BQ25798 (https://www.digikey.com/short/vnr279pz) also has many of the cool features we liked in the BQ25792: On-The-Go mode where you can turn the buck-boost around and have it generate a variable voltage output, say 5V for powering other USB devices. Another thing that works is powering over USB where you can have the BQ negotiate 'high voltage' support from USB 3 ports. Note that this isn't USB Type C power negotiation, for that you'll want to get a separate USB Type C PD negotiation chip like the TPS25750D (https://www.tij.co.jp/jp/lit/ml/slpp103/slpp103.pdf)...we're hoping there's a future version with PD built in! There's also a built in 16-bit ADC that you can use to monitor various voltages and current draw. While you can charge the battery in 'standalone' mode - you really do need I2C to get the best performance and capabilities. Thankfully there's not a huge number of registers, and SDA/SCL can be 3 or 5V logic signals so you should be able to get it working on anything from an ATmega328 to a Raspberry Pi. We like the high integration: you really only need a few passives and an inductor to get a fantastic all-in-one charger for any lithium ion battery pack. If you're intrigued and would like more information, you've come to the right place! DigiKey has the BQ25798 (https://www.digikey.com/short/vnr279pz) in stock right now for immediate shipment. Order today and you can start designing your solar-powered products of the future by tomorrow afternoon.

Sumario Informe Enigma Dirige y Presenta: Jorge Ríos Escúchanos cada viernes de 23:00h a 01:00h en directo en Radio Platja d'Aro. Síguenos a través de nuestras redes sociales o contacta con nosotros en el siguiente correo electrónico: informeenigmapodcast@gmail.com Contacto Yolanda Martínez: 647552954 Esta semana en el programa, nos sumergimos en tres temas fascinantes que cruzan los límites de lo conocido y lo inexplicable, explorando desde los misterios ocultos en las frecuencias de radio, hasta los secretos más profundos del universo energético. La UVB 76, la emisora de radio fantasma más importante y enigmática del mundo, nos ha dejado sus últimos mensajes, una serie de señales crípticas que siguen sin explicación clara. Con Hugo Fernández, nos adentramos en los misterios detrás de la frecuencia 4625 kHz, donde la radio transmite extraños zumbidos, códigos y mensajes enigmáticos, dejando a la comunidad de oyentes y expertos en vilo. ¿Qué hay detrás de estos susurros? ¿Por qué siguen emitiendo después de más de 40 años sin descanso? Además, hablamos del apagón eléctrico que sacudió España, un evento que paralizó el país durante horas. ¿Qué causó este colapso energético masivo? Javier del Valle, nos compartirá su análisis detallado, y aunque muchos apuntan a fallos técnicos, quizá podrá haber algo mucho más profundo y oculto detrás de esta crisis. ¿Fue solo un accidente? Y para cerrar, nos adentramos en el campo de la mente y el poder personal con Yolanda Martínez, quien nos reveló los secretos de la Ley de la Atracción. Un concepto que muchos han escuchado, pero pocos entienden en su profundidad. Yolanda explicó cómo nuestras creencias, emociones y pensamientos pueden atraer lo que deseamos, y cómo aplicar correctamente esta ley para transformar nuestra realidad. ¿Es la Ley de la Atracción realmente un poder universal, o es solo una cuestión de psicología positiva? Tres temas que parecen distantes entre sí, pero todos comparten una cosa: nos invitan a cuestionar la realidad tal y como la conocemos. No te pierdas este programa, donde los límites entre lo real y lo sobrenatural se desdibujan ante tus ojos.

Foundations of Amateur Radio Since becoming a licensed amateur in 2010, I have spent a good amount of time putting together my thoughts on a weekly basis about the hobby and the community surrounding amateur radio. As you might know, my interest is eclectic, some might say random, but by enlarge, I go where the unicorns appear. Over a year ago I mentioned in passing a community called HamSCI. The label on the box is "Ham Radio Science Citizen Investigation", which gives you a sense of what this is all about. It was started by amateur radio scientists who study upper atmospheric and space physics. More formally, the HamSCI mission is the "Continuation and extension of the amateur's proven ability to contribute to the advancement of the radio art." If you visit the hamsci.org website, and you should, you'll discover dozens of universities and around 1,300 people, many of whom are licensed radio amateurs, who are asking questions and discovering answers that matter to more than just our amateur community. For the eighth time the HamSCI community held an annual "workshop", really, an opportunity to get together and share ideas, in person and across the internet, a conference by any other name. Under the banner theme of "HamSCI's Big Year", over two days, 56 people representing 27 different organisations across 61 sessions, tutorials, discussions, tours, posters and demonstrations, explored topics all over our hobby, from the Personal Space Weather Network, capable of making ground based measurements of the space environment, to the Whistler Catcher Pi, a project to record the VLF spectrum to 48 kHz using a Raspberry Pi. You'll find research into HF antennas for the DASI or Distributed Array of Small Instruments project and associated NSF grants, exploring measurements of HF and VLF, combined with GPS and magnetometer across 20 to 30 stations. There's discussions on how to explore Geospace Data, such as information coming from the Personal Space Weather Station network, or PSWS, using the OpenSpace project and dealing with the challenges of visualising across a wide scale, all the way up to the entire known universe. Did I mention that there's work underway to add PSWS compatible receivers to Antarctica? There reports on observations and modelling of the ionospheric effects of the April 2024 solar eclipse QSO party, including Doppler radio, HF time differences, and Medium Wave signal enhancements, not to mention planning and promoting future meteor scatter QSO parties. There's, post-sunset sporadic-F propagation, large scale travelling ionospheric disturbances, GPS disciplined beacons, the physical nature of sporadic-E propagation and plenty more. As you might have heard me say at one time or another, the difference between fiddling and science is writing it down. It means that you'll find every session has accompanying documentation, charts, graphics and scientific papers. Remember, there's eight years of reading to catch up with, or learn from, or play with. The publications and presentations section on the hamsci.org website currently has 526 different entries. You might not be interested in the impact of radio wave and GPS scintillation, or rapid fluctuation in strength, caused during the G5 geomagnetic storm that occurred on the 10th of May 2024, or a statistical study of ion temperature anistropy using AMISR, or Advanced Modular Incoherent Scatter Radar data .. or you might. In case you're curious, "anistropy" is the property of being directionally dependent, in other words, it matters in which direction you measure, which might have some relevance to you if you consider that we think of the ionosphere and radio paths being reciprocal. If it reminds you of isotropy, that's because they're opposites. The point being, that amateur radio is a great many things to different people. If you're a scientist, budding, graduate or tenured, there's a home for you within this amazing hobby. I'm Onno VK6FLAB

BBC World Service in English received in Europe on shortwave frequency of 9410 kHz at 0504 GMT May 9, 2025 using domestic 40-years old shortwave receiver "JS" (with double frequency conversion design) running on bateries. Antenna: 5 meter wire outdoor put on trees. Recorded using old SONY cassette recorder TCM 500V model.The transmission recorded originated from the BBC Atlantic Relay Station in Ascension Island The station made its first shortwave radio transmission on July 3rd, 1966

#FrecuenciaAlDía - Rep. Dominicana – La Historia de Radio Cima 100 FM. El 20 de abril de 1979, empezaron a escucharse las transmisiones de prueba de la estación capitalina Radio Cima (HIVR), en los 100.5 MHz, propiedad del agrimensor Roberto Vargas Mejía, cuyos estudios y transmisor, se ubicaban en la avenida Francia a esquina Rosa Duarte. La inauguración se produjo el siguiente mes de mayo. A mediados de septiembre de 1992, Radio Cima, comenzó sus emisiones paralelas en la frecuencia de 4,960 KHz, banda de 60 metros, en onda corta. El Informe con Dino Bloise. Participaron: Francisco Oviedo – Otto Oppenheimer - Eusebio Sánchez - Luís G. Loyola – Francisco Páez – Magaly Fuentes - Espectro Noticioso - Víctor H. González. ► Síguenos en Programas DX: http://bit.ly/1A0x4Xq [No. 931. Publicado Mayo 9, 2025 - 05:00 UTC] #FrecuenciaAlDía #DinoBloise #TV #teléfono #YouTube #radio #radioafición #AmateurRadio #dx #diexismo #cb #TecnologíaAvanzada #InnovaciónTecnológica #GadgetsDelFuturo #ÚltimaTecnología #ReviewsTecnológicos #NoticiasTecnológicas #TendenciasTecnológicas #GadgetsYGizmos #MundoDigital #SmartTech #TechUpdates #GeekLife #GamerTech #TV #LifeHacksTecnológicos #CienciaYTecnología #TechUpdates #WiFi #GPT #InteligenciaArtificial #OpenAI #Tecnología #Robótica #FuturoTech #prorobots #robots #robots #technology #futuretechnology #innovation #innovation2025 #robotics

rWotD Episode 2926: Goldbeat Welcome to Random Wiki of the Day, your journey through Wikipedia's vast and varied content, one random article at a time.The random article for Thursday, 8 May 2025, is Goldbeat.Goldbeat was an AM radio station broadcasting on 828 kHz in Cookstown, Northern Ireland. It was launched in 1995 as Townland Radio, but was purchased in 1997 by media tycoon Owen Oyston who had already bought and relaunched Belfast Community Radio in 1996 (now Belfast CityBeat). The Oyston group relaunched Townland Radio as Goldbeat 828, but the station folded in 1999 along with sister station Heartbeat 1521 AM (formally Radio 1521) in Craigavon. Both AM licences were handed back to the then UK regulator The Radio Authority (now Ofcom). At the time only one other radio licence in the UK had ever been handed back to the regulator.After years of campaigning by locals for the re-advertising of a radio licence for Mid-Ulster, Ofcom awarded an FM licence for the area to Belfast CityBeat (now owned by CN group) in 2002. Belfast CityBeat launched Mid FM from the same premises previously occupied by Townland Radio/Goldbeat at Park Avenue, Cookstown in County Tyrone. In 2006 Belfast Citybeat sold their majority stake in Mid FM to Northern Media, owners of 7FM in Ballymena.Mid FM was rebranded to 6FM in 2006 and changed name again to Q106/7 FM in November 2011.This recording reflects the Wikipedia text as of 00:42 UTC on Thursday, 8 May 2025.For the full current version of the article, see Goldbeat on Wikipedia.This podcast uses content from Wikipedia under the Creative Commons Attribution-ShareAlike License.Visit our archives at wikioftheday.com and subscribe to stay updated on new episodes.Follow us on Mastodon at @wikioftheday@masto.ai.Also check out Curmudgeon's Corner, a current events podcast.Until next time, I'm generative Olivia.

Many thanks to SRAA contributor, Ian Pillar, who shares the following recording of Radio Symban made on April 26, 2025 on 2368 kHz at 06:10 UTC via a Kiwi SDR and loop antenna in New South Whales, Australia. Ian notes:Notes: Low Power Radio Symban Back On Shortwave From Sydney NSW Radio Symban Also Broadcast On FM With 24-hour Greek Programming. Some interesting photos found here.

I read from flysch to foal.     I'm no engineer so the flywheel is confusing. https://en.wikipedia.org/wiki/Flywheel     Compared to AM radio, FM has higher quality sound and travels a shorter distance. And the radio wave frequencies are much higher. AM frequencies range from about 535 to 1700 kHz (535,000 to 1,700,000 Hz) and FM is 88 to 108 MHz (88,000,000 to 108,000,000 Hz). FM waves vibrate faster than AM.  https://en.wikipedia.org/wiki/FM_broadcasting https://en.wikipedia.org/wiki/AM_broadcasting     The formula for the f-number is actually very simple, but you'll probably never have to use it. f-number = focal length / diameter of the aperture I also can never remember how the focal length is measure on a lens, but the shorter ones are wide angle lenses and the longer ones are telephoto lenses.  https://en.wikipedia.org/wiki/F-number https://en.wikipedia.org/wiki/Focal_length     The word of the episode is "fly speck".     Use my special link https://zen.ai/thedictionary to save 30% off your first month of any Zencastr paid plan.    Create your podcast today! #madeonzencastr     Theme music from Tom Maslowski https://zestysol.com/     Merchandising! https://www.teepublic.com/user/spejampar     "The Dictionary - Letter A" on YouTube "The Dictionary - Letter B" on YouTube "The Dictionary - Letter C" on YouTube "The Dictionary - Letter D" on YouTube "The Dictionary - Letter E" on YouTube "The Dictionary - Letter F" on YouTube     Featured in a Top 10 Dictionary Podcasts list! https://blog.feedspot.com/dictionary_podcasts/     Backwards Talking on YouTube: https://www.youtube.com/playlist?list=PLmIujMwEDbgZUexyR90jaTEEVmAYcCzuq     https://linktr.ee/spejampar dictionarypod@gmail.com https://www.facebook.com/thedictionarypod/ https://www.threads.net/@dictionarypod https://twitter.com/dictionarypod https://www.instagram.com/dictionarypod/ https://www.patreon.com/spejampar https://www.tiktok.com/@spejampar 917-727-5757

This show has been flagged as Clean by the host. Hi all! Topics Topic 1: Hello, my name is Antoine. Topic 2: I listened to you! a) Comment from Archer72: "[...] Audio setups are *definitely* of interest to hackers :)" Link: https://hackerpublicradio.org/eps/hpr4325/index.html#comment_4278 b) From hpr4351 :: HPR Community News for March 2025 (on the show) Something like: 'I'm not going to read your (long) comments, give a show on it'. Sorry for making you read my comments, dear HPR Janitors! (Specially you, good-voice Sgoti) Link: https://hackerpublicradio.org/eps/hpr4351/index.html Topic 3: My audio setup (Also you can see written on a commentary of mine on the link on Topic 2 a). Topic 4: My audio editing (when I do) With examples. * On the sibilance ("sss") example, the adjustment settings for the to-be-better fragment was an agressive cut of -7.4 dB on frequency 5.8 kHz (for advanced curiosity: Q 4.73, threshold -36.3 dB, ratio 3.8:1). Did it only with some testing, and knowing that sibilance normally is at about 6 kHz (when it happens, because here the dynamic microphone ended up not capturing too much of it). Topic 5: I'm in a new working time If you can, do a word of prayer to God in favour of me. If anything I said "that is better" is, actually, worse, don't worry thinking you are perceiving it wrongly, it's just that I'm not a professional and can have made it wrong. Or it's only a matter of taste, it's fine also; the ideas are there, and I welcome your participation too. Thank you! Credit of music I decided to use on the example after normalizing and compressing a fragment is from: EvanBoyerman: " Hopeful Piano/String Cinematic Ambience Drama Background Music ", CC-BY 4.0, link: https://freesound.org/people/EvanBoyerman/sounds/798705/ Provide feedback on this episode.

Many thanks to SRAA contributor, Dan Greenall, who shares the following recording and notes:Broadcaster: Radio Tahiti 1971Frequency: 15.170MHzReception location: Ancaster, Ontario, CanadaReceiver and antenna: Hallicrafters S-52 using a longwire antennaNotes: Radio Tahiti was a very popular station with shortwave listeners back in the 1970's. Their island type music was very listenable and the station often put a decent signal into eastern North America with their 20 kw of power on 15170 kHz. The late Dr. Richard E. Wood reported in the Communications Handbook for 1972 that this frequency was activated on April 10, 1971. I made this recording of their sign off announcements in French, closing song and La Marseillaise sometime in 1971.

Welcome to today's podcast, where we explore the dynamic world of Industrial MCUs with Marijana Vukicevic, Marketing Director for Industrial MCU at Infineon.Today's episode is brought to you by our sponsor, Infineon.Today, it's a pleasure to have a special guest, Marijana Vukicevic, joining us to discuss the evolving role of microcontrollers (MCUs) in high-performance motor control and power conversion applications.As industries shift from analog to digital power systems, MCUs are at the heart of enabling higher efficiency, faster switching, and real-time processing—critical for applications like robotics, industrial automation, and high-density power supplies for data centers. With switching frequencies increasing from 200 kHz to 600 kHz and beyond, the demand for ultra-fast, well-architected microcontrollers is greater than ever.In this episode, we'll explore how Infineon's MCUs are addressing these challenges, particularly in robotics and AI-powered motor control. We'll also dive into the role of GaN-based power systems, the increasing power demands of server racks, and what the future of MCU architecture looks like for next-generation embedded systems.

Many thanks to SRAA contributor Paul Walker, who shares the following recording of The Voice of America made on January 14, 2025 at 0355 UTC on 9775 kHz. The reception location was McGrath, Alaska:

Consider supporting my show with a donation via PayPal to vorwinfo@gmail.com it needs your help to survive! Main Broadcasts: 4840 kHz at 2 AM Eastern every Saturday Morning (New Show) 4840 kHz at 12 AM Eastern every Monday Morning (New Show) Repeat Airings: 5950 kHz at 7 PM Eastern every Saturday Evening (Rebroadcast) 5950 kHz at 8 PM Eastern every Sunday Evening (Rebroadcast) 17810 kHz at 11:30 AM Eastern every Monday Morning (South Asia Program) 5850 kHz at 4 AM Eastern every Tuesday Morning (Rebroadcast) 15770 kHz at 4 PM Eastern every Tuesday Afternoon (Rebroadcast) 7780 kHz at 7 PM Eastern every Wednesday Evening (Rebroadcast) 9455 kHz at 7 PM Eastern every Wednesday Evening (Rebroadcast) 9395 kHz at 10 PM Eastern every Wednesday Evening (Rebroadcast) 15770 kHz at 12 PM Eastern every Thursday Afternoon (Rebroadcast) 9955 kHz at 6 PM Eastern every Thursday Evening (Rebroadcast)

Jepler spent a bunch of time this week working on getting audio working on the pico-umac port https://github.com/jepler/pico-mac/tree/rp2350-fruitjam to Fruit Jam https://www.adafruit.com/product/6200 . Audio on the hardware we're emulating is pretty straightforward: every scanline of the video generator also pops out one byte of PWM data. We have 370 horizontal lines—352 visible and 18 during the vsync—and a 60.15 Hz refresh rate for 22.255 KHz audio approximately. That data is written to $1FD00 http://www.mac.linux-m68k.org/devel/plushw.php . That data is being piped over I2S to the MAX98357 https://www.adafruit.com/product/3006 and to a speaker for now. So, of course, the first thing we have to try out is Dark Castle https://archive.org/details/mac_DarkCastle_1_2 : famous for great audio and being a surprisingly hard game to play! The audio sounds really good though :) Visit the Adafruit shop online - http://www.adafruit.com ----------------------------------------- LIVE CHAT IS HERE! http://adafru.it/discord Subscribe to Adafruit on YouTube: http://adafru.it/subscribe New tutorials on the Adafruit Learning System: http://learn.adafruit.com/ ----------------------------------------- #marchintosh #apple #diy

This week's EYE ON NPI is trendy and buzzy, it's Boréas Technologies' BOS1931 High-Efficiency Piezo Driver (https://www.digikey.com/en/product-highlight/b/boreas/bos1931-high-efficiency-piezo-driver). This chip is a compact way to add powerful high-voltage piezo drive to any product, combining three chips: power supply, waveform generator and driver. With a complete I2C/I3C interface that you can connect to any microcontroller/processor it's the most advanced all-in-one piezo driver we've seen! Piezo (https://en.wikipedia.org/wiki/Piezoelectricity) discs are multi-use devices that convert mechanical movement to electrical signal, and vice-versa. They're most often seen as electrical-to-mechanical converters such as piezo beepers (https://en.wikipedia.org/wiki/Piezoelectric_speaker) where an AC signal, usually 3 to 6V peak-to-peak square wave, is applied across the disk. The frequency of the wave is translated into a sound frequency. It doesn't have the same fidelity as a magnetic speaker but its much thinner, less expensive for the component and driving circuitry, and for 2 to 4 KHz beeps it's just fine. Piezos can also be used the opposite way, where mechanical stress on the crystal is translated into an electrical signal. In this way it can be used as a switch or force sensor (https://en.wikipedia.org/wiki/Piezoelectric_sensor), again usually a few microamperes' worth of current is generated. For these basic uses, your standard microcontroller pin, or at best an H-Bridge will work just fine: you can drive piezo's differentially to get more Vpp across the disc but essentially we're still talking about only a few Volts. There are some times when you want to make a piezo really 'loud' - that is, putting 100+ Volts across the crystal to generate a big mechanical response. This is often not for audible use cases, after all if you wanted to do that you'd just use a magnetic speaker (https://www.adafruit.com/product/1732) that can get to many many Watts of output efficiently. FYI there's two variants of the chip: the BOS1931 (https://www.digikey.com/short/w9tz9tbj) and the BOS1921 (https://www.digikey.com/short/nnb0r29r). The '31 can only do piezo driving. The '21 can do sensing as well as driving, so it can be used for force-feedback products. In this particular EYE ON NPI we'll just be chatting about the driving capabilities of both. So, while we can do basic sensing/beeping with a few Volts - when we want to have significant motion for blasting sonar or moving fluid around we can only increase the movement by increasing the peak-to-peak voltage. Each piezo you buy will have a voltage rating - and you will need a boost converter to generate that peak-to-peak. For the BOS19 series of chips, you can get +-95V so 190Vpp max, which will drive any piezo you find, and you only need 3~5V input thanks to a built-in DC/DC boost converter. Boréas didn't stop there. Not only do you get a booster, but also a full waveform manager with I2C/I3C control. You can can fill up a FIFO buffer with waveform bytes to generate different shapes. There's a sine generator you can control with an envelope creator. Or, you can piece together waveform shapes for different pump/haptic behavior, giving you the customizability of a byte-wise waveform generator with the simplicity of a sine generator. They even have a Haptics Studio' to help you craft the waveform you want (https://www.boreas.ca/pages/haptic-studio). The BOS1931 (https://www.digikey.com/short/w9tz9tbj) and the BOS1921 (https://www.digikey.com/short/nnb0r29r) come in two packages: an easy-to-layout-and-solder QFN and a tiny-and-advanced BGA. Both have the same core so just pick whether you need simplicity or small size. Since its a pretty serious boost converter and driver - the piezo connects directly to the output pins - you'll need to watch your layout. Check the datasheet for their recommended setup to make sure you don't have excessive power loss or EMI. IF you want to get started quickly, the BOS1921-KIT-B01 (https://www.digikey.com/short/v9hn8mcd) evaluation board will let you use their configuration software to quickly determine how your piezo actuator or sensor response to the waveform generator and booster before you start laying out the components on a prototype PCB. If you have some serious piezo-ing you need to get moving, the Boréas Technologies' BOS1931 High-Efficiency Piezo Driver (https://www.digikey.com/short/w9tz9tbj) can do everything from voltage generation, waveform shaping, and differential driving. And best of all it's in stock right now at Digi-Key for immediate shipment! Order today and DigiKey will pick and pack your order in an instant so that you can be vibin' with your fancy new piezo controller by tomorrow afternoon.

See the Sounds of Classic Mac Audio

Many thanks to SRAA contributor, Dan Greenall, who shares the following recording and notes:Broadcaster: Maritime radio HLS Seoul KoreaDate of recording: October 31, 1998Frequency: 8.725 MHzReception location: Coe Hill, Ontario, CanadaReceiver and antenna: Panasonic RF-3100 and longwire antennaMode: Single Side BandNotes: Maritime radiotelephone station HLS in Seoul, Korea continued to operate in the late 1990's on shortwave. Instead of a repeating voice mirror, this station played Beethoven's "Ode to Joy" over and over so that the receiving station could tune them in. This recording is from October 31, 1998 at Coe Hill, Ontario, Canada, and the frequency they were using was 8725 kHz upper sideband. My receiver was a Panasonic RF-3100 hooked up to a long wire antenna.The station was identified by Richard "RD" Baker, editor of Communications Confidential, in the January 1999 issue of Popular Communications magazine. In his Reader Mailbag section, he wrote:"Dan Greenall in Ontario, Canada, has been hearing a new (at least to folks in North America) maritime marker on 8725.0 USB: Beethoven's 9th Symphony "Ode to Joy" is repeated. In trying to track this marker down, we sent the call out over the WUN Club's listserver. Costas Krallis in Greece, Fabrizio Magrone in Italy. Alex Wellner and Robin Harwood. both in Australia. all became involved. They soon began logging the marker on other maritime frequencies. Eventually, it was noted on 6513, 8725, 8797, 13161, and 17341. Only one station has those frequencies in common: HLS, Seoul Radio. South Korea. The marker was completely IDed within 32 hours!"

SCRIPT:Amateur Radio Newsline Report 2471 for Friday, March 7th, 2025 Amateur Radio Newsline Report Number 2471 with a release date of Friday, March 7th, 2025 to follow in 5-4-3-2-1.The following is a QST. A survey reveals some important trends in Brazilian amateur radio. Huntsville's new museum of communications and technology is open -- and the founder of the Hurricane Watch Net becomes a Silent Key. All this and more as Amateur Radio Newsline Report Number 2471 comes your way right now.** BILLBOARD CART**SURVEY GIVES DETAILED SNAPSHOT OF HAM RADIO IN BRAZILPAUL/ANCHOR: Our top story takes us to Brazil where a recent survey is providing a detailed look at trends among hams in South America's largest nation. Jeremy Boot G4NJH shares some of its findings.JEREMY: An important snapshot of the state of amateur radio in Brazil has provided the national ham radio society and the telecommunications regulator with insights into relevant trends. The sampling of 940 hams in 27 states and 350 cities was conducted in May of 2024 by Guillermo Crimerius, PY2BIL, a member of the board of the Sao Paulo chapter of LABRE, the Liga de Amadores Brasileiros de Rádio Emissão. Guillermo told Newsline that the findings are also being shared with the regulator ANATEL.He said that the findings held no surprises but many details were nonetheless significant. Brazil's ham radio community remains predominantly male, with women comprising only 2 percent of the hobby. Survey results also showed that hams are an aging population in Brazil: 72% are between 40 and 70 years old, with most of them between 40 and 60. While new licensees continue to join Brazil's ham community every year, there is low membership in clubs and associations, giving little opportunity for the networking and skills training usually provided by them. Guillermo writes: [quote] "This scenario has had an impact on new generations of hams,who face difficulties in learning the essential technical matters and especially the operational and cultural activities." [endquote]For a full copy of the report, which is downloadable, visit the link in the text version of this week's newscast at arnewsline.orgThis is Jeremy Boot G4NJH.(GUILLERMO CRIMERIUS, PY2BIL)**NOMINATE THE NEXT "YOUNG HAM OF THE YEAR"PAUL/ANCHOR: We remind our listeners that young hams who live in the continental United States have an opportunity to make news, if they aren't already doing so, by being a recipient of this year's Amateur Radio Newsline Bill Pasternak Memorial Young Ham of the Year Award. Consider nominating an amateur radio operator 18 years of age or younger -- someone who has talent, promise and a commitment to the spirit of ham radio. Find application forms on our website arnewsline.org under the "YHOTY" tab. Nominations are now open. We are accepting nominations through May 31st.**BRANDMEISTER DMR PHASING OUT SOME RADIO IDSPAUL/ANCHOR: Certain Radio IDs that have been in use on the Brandmeister DMR network are going away later this year. Sel Embee KB3TZD explains.SEL: The Brandmeister DMR network has announced that it is phasing out its support of certain Radio IDs that do not comply with the Mobile Country Code, or MCC, numbering system. This means that by June, radio operators with certain DMR IDs will need to request new numbers to be assigned to their radios. The first phase of these changes will begin on the 1st of June, when Brandmeister will stop supporting five-digit CAP+ IDs. Starting on the 1st of January, 2026, radios with seven-digit personal radio IDs that begin with the numeral 1 will also stop working on the network. In making this announcement, Brandmeister assured repeater operators that it will continue indefinite support of repeaters that have six-digit radio IDs.Brandmeister said in its announcement in late February that this an effort to address improperly numbered Radio IDs – something Brandmeister has been trying to contain for seven years. It said on its website: [quote] The Brandmeister DMR platform is a constantly evolving system, requiring regular optimizations and maintenance to ensure its efficiency, reliability, and alignment with global open standards.” [Endquote]New IDs can be obtained through Radio ID (Radio Eye Dee) dot net (Radioid.net).For further instructions visit the Brandmeister link that appears in the text version of this week's newscast at arnewsline.orgThis is Sel Embee KB3TZD.[DO NOT READ: news.brandmeister.network](NEWS.BRANDMEISTER.NETWORK, AMATEUR NEWS DAILY)**3 IRISH "KILMOLIN CLUSTER" BEACONS GO QRT TO RELOCATEPAUL/ANCHOR: A trio of beacons in Ireland have been taken out of service in preparation for being moved, as we hear from Jeremy Boot G4NJH.JEREMY: In Ireland, three beacons that have been operating from a site south of Dublin have gone QRT to allow for their relocation. The EI4RF, EI1KNH and EIØSIX beacons have been part of what is known as the Kilmolin cluster. They had been hosted by Paddy Geoghegan, EI5HS, who became a Silent Key last year.The beacons, which have a new owner, went off the air in mid-February and are expected to slowly come back. According to reports on groups.io and the SWLing Post blog, the EI4RF 4-metre beacon is expected to be the first to return, perhaps by May just as sporadic-E season begins. The EIØSIX beacon is expected to follow sometime afterward on 6-metres. It was unclear how and when service will be restored on the EI1KHN beacon, which operated on 40 and 60 MHz. It is also unclear whether this beacon will need to be assigned a new callsign.This is Jeremy Boot GF4NJH.(EI7GI BLOG, QRZ.COM, SWLING POST)**UNIVERSITY IS W. BENGAL'S 1ST TO HAVE HAM CLUB STATIONPAUL/ANCHOR: Students and faculty in India are celebrating the establishment of the first state-of-the-art shack on a West Bengal state university campus. Graham Kemp VK4BB tells us more.GRAHAM: Aliah University, a state university that created for the education of many of India's minority populations, is about to become the first university in West Bengal with its own state-of-the-art ham radio club station.The announcement was made in late February in connection with a seminar held on the Kolkata campus introducing students and faculty to various aspects of amateur radio. The one-day session, held on the 24th of February, covered emergency communications and radio technology and included hands-on experience for the estimated 250 attendees. It was led by members of the West Bengal Radio Club, the Indian Academy of Communication and Disaster Management and organized by the school's Department of Electronics and Communication Engineering. A number of other schools have hosted similar amateur radio workshops throughout the region, which is a coastal area subject to violent storms and other natural disasters that rely on alternate forms of communication. This is Graham Kemp VK4BB.(MILLENNIUM POST)**BROADCAST TRADE SHOW DROPS RECEPTION FOR HAMSPAUL/ANCHOR: Hams will no doubt be among those visiting the National Association of Broadcasters annual trade show again this year but something will be missing, as we learn from Ralph Squillace KK6ITB.RALPH: The annual trade show of the National Association of Broadcasters is welcoming industry professionals once again this year to Las Vegas in April. One traditional event will be missing from this year's show, however: There will be no separate reception for amateur radio operators.Hams, of course, are still welcome. Indeed, many broadcast professionals - especially those on the engineering side - enjoy an active and robust time on the air on the amateur bands. A posting on the Radio World website said that this year's ham reception was not on the schedule. The reception had been hosted for a long time by Bob Heil K9EID, who became a Silent Key last year.The article said that organizers are hoping to [quote] "reinvent the event for next year by exploring fresh partnerships and innovative ideas." [endquote]In the meantime, licensed hams who work in the industry can still look forward to the usual opportunities for networking and learning about new technology. The NAB Show takes place between April 5th and 9th at the Las Vegas Convention Center.This is Ralph Squillace KK6ITB.(RADIO WORLD)**BREAK HERE: Time for you to identify your station. We are the Amateur Radio Newsline, heard on bulletin stations around the world including the WB3GXW repeater in Silver Spring, Maryland and simultaneously on EchoLink Conference Server Node 6154 on Saturdays at 8 PM and Sundays at 7 PM Eastern time.**DX INDIA FOUNDATION PREPARES FOR DXPEDITIONNEIL/ANCHOR: In India, there's a new DX foundation that has lots of energy and ambition - and plans for a rarely activated island. We learn more from Jason Daniels VK2LAW.JASON: It's still early in the game for the newly organized not-for-profit DX India Foundation but the team has already announced ambitious plans to increase India's presence on the DX map. As part of its mission to activate rare IOTA islands, conduct DXpeditions and provide DX and POTA chasers with a chance to work different entities in India, the team has its sights set on Arnala Island, IOTA number AS-169, which is near Mumbai. According to an announcement from the team, the island has had no amateur radio activity since 2006. Hams from the DX India Foundation have applied to use the callsign AU2M and hope to be on the air from the 29th of May through to the 1st of June. Later plans include a 10-day adventure to the Lakshadweep archipelago off the coast of Kerala [CARE-ruh-luh] in southern India.The DX India Foundation has also established an online forum in groups.io to encourage a sense of international community for chasers and activators. In between trips, the foundation's activity will be focused on training and mentoring other radio operators.This is Jason Daniels VK2LAW.(DX INDIA FOUNDATION)**HUNTSVILLE'S ‘SIGNALS' MUSEUM OPENS IN ALABAMAPAUL/ANCHOR: Huntsville, Alabama, home of the Huntsville Hamfest, has a new way to celebrate technology and, of course, amateur radio. To welcome the museum and honor the spirit and advancements made in technology, Newsline is departing from the norm this week. This report is being read via artificial intelligence and a correspondent known as AI-Drew.AI-DREW: On March 1st, the SIGNALS Museum of Information Explosion opened its doors to what founders hope will be an immersive and hands-on environment for visitors. The museum, housed a short drive from where the Huntsville Hamfest is held each year, has an array of exhibits devoted to communications technology in all its forms throughout history. Amateur radio operators who are visiting will be particularly interested in the ham shack, a welcoming space for regional radio clubs and other radio operators to meet or work on building equipment. The museum also has an on-site radio tower.Whether you live in the area or plan to visit Huntsville this year, the museum will welcome you. Visit their website at signals hyphen museum dot org. (signals-museum.org)This is AI-Drew.(SIGNALS MUSEUM)**SILENT KEY: GERRY MURPHY, K8YUW, FOUNDER OF THE HURRICANE WATCH NETPAUL/ANCHOR: Atlantic hurricane season is still a few months away but hams and forecasters will be going forward into this year's season without the man who created the Hurricane Watch Net 60 years ago. He has become a Silent Key, as we hear from Randy Sly W4XJ.RANDY: It can be said that the seeds of the Hurricane Watch Net were planted in 1965 as Hurricane Betsy raged its way through the Bahamas, making landfall in the US that September. Gerald Murphy, K8YUW, who was stationed by the US Navy in Rhode Island at the time, was also handling messages and phone patches for the Intercontinental Amateur Radio Net. When hurricane-specific traffic started to overwhelm the regular net's messages on their 20m frequency, Gerry suggested that those messages be handled 5 kHz higher. Marcy Rice, KZ5MM, who was in the Panama Canal Zone QSY'd with him up to 14.325 MHz and that was the genesis of the Hurricane Watch Net.The net has become the backbone of a robust communications system during storm season. Trained hams share advisories, data and post-storm damage information in affected areas with national hurricane centers in the US and, when needed, Canada.Gerry, who became a Silent Key on the 25th of February at the Ohio Veterans Home in Sandusky, leaves behind this vibrant legacy. He served as net manager from September of 1965 until February of 1988, staying on afterward as assistant net manager. Health issues compelled him to retire from the net in March 1991.The Hurricane Watch Net has been planning an on-air special event in September to mark its 60th anniversary. Net manager Bobby Graves,KB5HAV, told Newsline [quote] "I was hoping and praying Jerry would make it to see his creation's 60th Anniversary this coming Labor Day....We will endeavor to make it even more special." [endquote]Gerry was 88.This is Randy Sly W4XJ.(BOBBY GRAVES, KB5HAV; EDDIE MISIEWICZ, KB3YRU)**WORLD OF DXIn the World of DX, Chris, WA7RAR, is on the air until the 16th of March from Barbados, IOTA Number NA-ØØ21. He is using the callsign 8P9CB, operating SSB and CW on 20-10 metres. Some of his locations are POTA sites. See QRZ.com for QSL details.Rockwell, WW1X, is using the callsign VP5/WW1X from Providenciales, IOTA Number NA-ØØ2 in the Turks and Caicos Islands from the 8th through to the 15th of March. This is a QRP operation using only SSB, although Rockwell has not ruled out occasional use of FT8. QSL via LoTW.Listen for Aldir, PY1SAD, who is using the callsign 8R1TM from Georgetown, Guyana, between the 11th of March and the 26th of April. Aldir is using CW, SSB and the digital modes on the HF bands. He is also operating via satellite. See QRZ.com for QSL details.Members of the Korean Amateur Radio League are on the air in March and April to celebrate the centenary of the International Amateur Radio Union. They are using the callsign HL1ØØIARU. See QRZ.com for QSL details.(425 DX BULLETIN)**KICKER: ECHOES OF A DIFFERENT WAY TO LEARN CWPAUL/ANCHOR: We end this week's report with an alternate way in which some hams in New Zealand got to learn and practice CW while having real QSOs. We'll let Jim Meachen ZL2BHF explain how it happened.JIM: If you've ever wondered whether Echolink is a viable mode for teaching or learning CW, just ask Ted ZL1BQA, who is proud to have logged a respectable number of CW contacts during the recent Jock White Memorial Field Day in New Zealand. Studying CW for almost a year with the Franklin Amateur Radio Club, Ted was able to restart his long-ago code skills in sessions led by the club president Peter Henderson ZL1PX. It was done over Echolink.Ted had enrolled last May along with three younger members who were first-time learners - Francois, ZL4FJ, Steve, ZL1TZP and Steve ZL1SPR. With only Ted able to copy Peter's signal over HF, the club followed a suggestion made by Gary ZL1GAC: try Echolink, a computer-based ham radio mode that incorporates VoIP technology. Loading CW software onto his computer, Peter was able to send the code intended for each session, confident that everyone had an equal chance of copying clearly.Weekly sessions soon expanded to twice a week as the students concentrated on letters, then numbers - and eventually basic punctuation.After a break in the action, the club is back on Echolink with CW sessions three nights a week. As for Ted, he's on a roll. Peter told Newsline in an email that he has resumed making CW contacts on a daily basis on HF using the Vibroplex that once collected dust instead of QSOs.This is Jim Meachen ZL2BHF.(QUA, Peter Henderson, ZL1PX)**Have you sent in your amateur radio haiku to Newsline's haiku challenge yet? It's as easy as writing a QSL card. Set your thoughts down using traditional haiku format - a three-line verse with five syllables in the first line, seven in the second and five in the third. Submit your work on our website at arnewsline.org - each week's winner gets a shout-out on our website, where everyone can find the winning haiku.NEWSCAST CLOSE: With thanks to Amateur News Daily; Bobby Graves, KB5HAV; Brandmeister; David Behar K7DB; DX India Foundation; Eddie Misiewicz, KB3YRU; EI7GI Blog; Guillermo Crimerius, PY2BIL; Millennium Post; Peter Henderson, ZL1PX; QRZ.com; QUA Newsletter; Radio World; shortwaveradio.de; SWLing Post; Wireless Institute of Australia; and you our listeners, that's all from the Amateur Radio Newsline. We remind our listeners that Amateur Radio Newsline is an all-volunteer non-profit organization that incurs expenses for its continued operation. If you wish to support us, please visit our website at arnewsline.org and know that we appreciate you all. We also remind our listeners that if you like our newscast, please leave us a 5-star rating wherever you subscribe to us. For now, with Caryn Eve Murray KD2GUT at the news desk in New York, and our news team worldwide, I'm Paul Braun WD9GCO in Valparaiso Indiana saying 73. As always we thank you for listening. Amateur Radio Newsline(tm) is Copyright 2025. All rights reserved.

Many thanks to SRAA contributor Dan Greenall, who shares the following recording and notes:Broadcaster: Deutsche Welle, Kigali, Rwanda relay 1971Frequency: 11.965 MHzReception location: Ancaster, Ontario, CanadaReceiver and antenna: Hallicrafters S-52 using a longwire antennaNotes: When this recording was made in 1971, the easiest way to add Rwanda to your "countries heard" totals was to log the Deutsche Welle (Voice of Germany) relay in Kigali. The station could be heard quite well here in southern Ontario, Canada even though broadcasts were not directed to eastern North America. My QSL card has them using 11965 kHz, however I am not fluent in German and this recording could possibly have been made on a different frequency. This relay station was closed down in 2015 after 50 years of operation.

Consider supporting my show with a donation via PayPal to vorwinfo@gmail.com it needs your help to survive! Main Broadcasts: 4840 kHz at 2 AM Eastern every Saturday Morning (New Show) 4840 kHz at 12 AM Eastern every Monday Morning (New Show) Repeat Airings: 5950 kHz at 7 PM Eastern every Saturday Evening (Rebroadcast) 5950 kHz at 8 PM Eastern every Sunday Evening (Rebroadcast) 17810 kHz at 10:30 AM Eastern every Monday Morning (South Asia Program) 15770 kHz at 3 PM Eastern every Tuesday Afternoon (Rebroadcast) 7570 kHz at 6 PM Eastern every Wednesday Evening (Rebroadcast) 7780 kHz at 6 PM Eastern every Wednesday Evening (Rebroadcast) 9395 kHz at 10 PM Eastern every Wednesday Evening (Rebroadcast) 15770 kHz at 11 AM Eastern every Thursday Morning (Rebroadcast) 9955 kHz at 6 PM Eastern every Thursday Evening (Rebroadcast)

Many thanks to SRAA contributor, Dan Greenall, who shares the following recording and notes:Broadcaster: Radio Veritas Asia, Quezon City, PhilippinesDate of recording: September 28, 1999Starting time: 1200 UTCFrequency: 9.505 MHzReception location: Coe Hill, Ontario, CanadaReceiver and antenna: Drake SW-8 and a very long wire antennaNotes: Here is Radio Veritas Asia in Quezon City, Philippines as recorded at a DX camp in Coe Hill, Ontario, Canada on September 28, 1999. Part of their interval signal is heard along with a station ID in English. They give their frequency as 9505 kHz and the time as 1200 UTC.

Many thanks to SRAA contributor, Dan Greenall, who shares the following recording and notes:Broadcaster: Radio Alma Ata, Kazakh S.S.R. 1971Frequency: 9,380 kHzRecption location: Ancaster, Ontario, CanadaReceiver and antenna: Hallicrafters S-52 using a longwire antennaNotes: Here is the interval signal and sign on announcement from Radio Alma Ata in Kazakhstan as heard in Ancaster, Ontario, Canada in 1971. They were on 9380 kHz and I was listening on a Hallicrafters S-52 receiver hooked up to an outdoor long wire antenna. Just using an open mike placed in front of the speaker and appears the mike was shut off briefly between the interval signal and the voice announcement.

Consider supporting my show with a donation via PayPal to vorwinfo@gmail.com it needs your help to survive! Main Broadcasts: 4840 kHz at 2 AM Eastern every Saturday Morning (New Show) 4840 kHz at 12 AM Eastern every Monday Morning (New Show) Repeat Airings: 5950 kHz at 7 PM Eastern every Saturday Evening (Rebroadcast) 5950 kHz at 8 PM Eastern every Sunday Evening (Rebroadcast) 17810 kHz at 10:30 AM Eastern every Monday Morning (South Asia Program) 15770 kHz at 3 PM Eastern every Tuesday Afternoon (Rebroadcast) 7570 kHz at 6 PM Eastern every Wednesday Evening (Rebroadcast) 7780 kHz at 6 PM Eastern every Wednesday Evening (Rebroadcast) 9395 kHz at 10 PM Eastern every Wednesday Evening (Rebroadcast) 15770 kHz at 11 AM Eastern every Thursday Morning (Rebroadcast) 9955 kHz at 6 PM Eastern every Thursday Evening (Rebroadcast)

Consider supporting my show with a donation via PayPal to vorwinfo@gmail.com it needs your help to survive! Main Broadcasts: 4840 kHz at 2 AM Eastern every Saturday Morning (New Show) 4840 kHz at 12 AM Eastern every Monday Morning (New Show) Repeat Airings: 5950 kHz at 7 PM Eastern every Saturday Evening (Rebroadcast) 5950 kHz at 8 PM Eastern every Sunday Evening (Rebroadcast) 17810 kHz at 10:30 AM Eastern every Monday Morning (South Asia Program) 15770 kHz at 3 PM Eastern every Tuesday Afternoon (Rebroadcast) 7570 kHz at 6 PM Eastern every Wednesday Evening (Rebroadcast) 7780 kHz at 6 PM Eastern every Wednesday Evening (Rebroadcast) 9395 kHz at 10 PM Eastern every Wednesday Evening (Rebroadcast) 15770 kHz at 11 AM Eastern every Thursday Morning (Rebroadcast) 9955 kHz at 6 PM Eastern every Thursday Evening (Rebroadcast)