Podcasts about khz

On Charlie Kirk's assassination, media bias, and the unraveling of American unity. Candid, challenging, and unfiltered.. Broadcast September 12, 2025, on WWCR 4840 kHz, this episode confronts one of the most volatile weeks in recent memory. Thompson examines the murder of Charlie Kirk, the killing of Ukrainian refugee Iryna Zarutska, and the selective coverage (and outrage) that followed. Together, these stories reveal how far the boundaries of political discourse have collapsed and how normalized violence has become in a fractured culture. Todd explores the deeper pattern: how identity politics has replaced shared citizenship, how media narratives are weaponized to excuse or inflame, and how the political class falls back on stale platitudes about “lowering the rhetoric” while the fire continues to spread. The episode also briefly connects to foreign influence strategies, where outside actors and digital platforms amplify division rather than heal it. Todd closes with reflections on the anniversary of September 11th. He contrasts the fleeting unity of 2001, when flags flew in every neighborhood and the idea of America still bound people together, with the rabid tribalism of today. The question is no longer how to recover unity, but whether unity is even possible in a culture where grievance trumps allegiance. The conclusion is blunt and unsparing: America's “Humpty Dumpty” has fallen, and no amount of political spin can put it back together again. What remains is the fight over how people will live inside the fracture and whether patriotism can still serve as a bond strong enough to resist collapse.   Not surprisingly, this podcast and The Holy Algorithm are bitter enemies! Rate, review, and share, please!  

Broadcast September 8, 2025, on WBCQ shortwave (7490 kHz), this episode challenges the idea that human beings are “blank slates.” Todd Thompson argues that much of what is labeled racism is better understood as cultural and tribal reflex — instincts wired by evolution, not just products of environment. Drawing on research by primatologist Frans de Waal, Todd shows how empathy, loyalty, and group boundaries appear in chimpanzees and humans alike. These instincts shape culture and survival, and when they're ignored or denied, societies fracture. From Rwanda and Yugoslavia to American Indians to today's unrest in Europe and the United States, history demonstrates the cost of refusing to acknowledge human nature. The broadcast also explores Cold War lessons. Former KGB defector Yuri Bezmenov described a four-stage strategy of subversion: demoralization, destabilization, crisis, and normalization. While he was speaking in the 1980s, the pattern is recognizable today. Modern influence campaigns no longer need spies in every institution — social media amplifies divisions at the speed of light. Every divisive slogan, every cultural flashpoint becomes a lever. The final segment turns to today's grassroots pushback. In Britain, Ireland, France, Germany, Sweden, and even Australia, ordinary citizens are reclaiming their flags and cultural identity. These aren't marches for empire, but local communities refusing to surrender their way of life. Todd argues that what's dismissed as extremism is more often people defending memory, tradition, and cohesion. The conclusion is clear: tribes that fail to rise above internal fracture are replaced by those that can. In practice, the broadest “tribe” available is the nation itself. Patriotism — allegiance to country above grievance — remains the only force strong enough to resist both ideological pressure and foreign manipulation. And as Todd reminds listeners, we are not heirs to apology but to resilience; descendants of people who endured unimaginable hardships fighting to build our nation out of nothing.  

Many thanks to SRAA contributor Dan Greenall, who shares the following recording and notes:Broadcaster: Republic of Yemen Radio via Jeddah, Saudi Arabia transmitterFrequency: 11.935 MHzReception location: Addis Ababa, Ethiopia and Riyadh, Saudi ArabiaReceiver and antenna: remote Kiwi SDRNotes: Two recordings of Republic of Yemen Radio broadcasting in Arabic on 11935 kHz shortwave from a transmitter located in Jeddah, Saudi Arabia. Reported transmitter power is 50 kw.February 15, 2025 at 1959 UTC, good signal, no hum, received using SDR located in Addis Ababa, EthiopiaApril 9, 2025 at 1658 UTC, bad hum or buzz on their signal, received using SDR located in Riyadh, Saudi, ArabiaThis station has not been heard more recently.

In this episode, we sit down with Jeremy McCool, founder and CEO of HEVO, a company building wireless charging systems for electric vehicles. Think of a garage-floor charging pad—pull in, align, and your car charges automatically. HEVO has been solving the physics, standards and automotive integration work for over a decade, and now stands at the front line of commercial adoption.HEVO is underway with two major global automakers, including Stellantis (Jeep, Dodge, Fiat, Peugeot, and more), to integrate wireless charging into up to seven EV platforms beginning 2027–2028. This isn't a small bolt-on—the company has achieved UL certification and alignment with SAE wireless charging standards, clearing essential hurdles for true automotive-grade integration.Beyond the OEM opportunity, HEVO is partnering with Steer Tech to enable autonomous parking + wireless charging for fleet yards—a use case that eliminates manual charging attendants and enables round-the-clock operation. Wireless charging isn't just convenient—it's the missing piece for scaling autonomous fleets.HEVO's cost and efficiency discipline makes this more than a vision. The company's target pricing for on-vehicle components aims to be competitive with plug-in equipment, while the 11 kW bidirectional home charger is priced at $1,200, enabling vehicle-to-home (V2H) power during outages. With grid-to-battery efficiency in the low-to-mid 90%, 85 kHz universality, and a 12-inch air gap tolerance, HEVO is designed for scale.The most striking part: once an OEM launches, the curve goes from flat to 50,000+ units in year one—across multiple vehicle programs. HEVO expects to be profitable on hardware and software at volume from day one of scaling production.

*When memory collides with myth and borders refuse to disappear.* This week's broadcast cuts through nostalgia, mythology, and manipulation — from the reality of Hurricane Katrina's aftermath to the performance art of political protest, and Europe's current struggles with borders and "shifting populations." Todd weaves firsthand accounts with sharp cultural critique to show how old wounds and new delusions collide. Revisiting the legacy of Hurricane Katrina: lived experience vs. media spectacle. “Moonbeam” politics — when activism becomes performance instead of substance. Europe's modern turmoil: "shifting populations", cultural assimilation, and "renewed identity politics." The dangers of ideological cosplay and self-mythologizing movements. Why remembering the past without illusions matters for navigating the present

Many thanks to SRAA contributor Dan Greenall, who shares the following recording and notes:Broadcaster: WYFR Scituate MA transmitterDate of recording: May 02, 1974Frequency: 17.785 MHzReception location: Ancaster, Ontario, CanadaReceiver and antenna: Realistic DX-150A with long wire antennaNotes: Your Family Radio, WYFR is heard here via their Scituate, Massachusetts transmitter on May 2, 1974 at 2200 hours UTC on 17785 kHz shortwave.The station has a very colorful history:W2XAL (1927–1929)W1XAL (1929–1939)transmitter moved from Boston to Scituate, MA in 1936WRUL (1939–1966)WNYW (1966–1973)WYFR (1973-2013)transmitter moved to Okeechobee, FL in 1977transmitter purchased by WRMI in December 2013

In thie episode of The Thompson Show, Todd traces the Red–Green Alliance from London to Minneapolis — exposing how Marxists and Islamists fuse identity politics, anti-Western rhetoric, and insurgent tactics into a permanent political front. Broadcast August 25, 2025 (WBCQ 7490 kHz), this episode takes a deep dive into the Red–Green Alliance — the unofficial but very real cooperation between far-left revolutionaries and Islamist movements. Todd unpacks how this alliance has played out in Europe and America: In England: from Ken Livingstone welcoming Muslim Brotherhood clerics into City Hall, to the Respect Party's fusion of Trotskyists and Islamist activists, to Jeremy Corbyn calling Hamas and Hezbollah his “friends.” These examples show how segments of the British Left traded legitimacy to Islamists in exchange for turnout and street power. On campuses and in media: post-colonial narratives reframed Islamist extremists as victims, while far-left academics embraced “decolonizing knowledge” and dismissed facts as tools of Western domination. In France: activists openly strategize about building “Muslim communist cadres,” treating mosques as political cells — a clear blueprint for how the Red–Green project embeds itself. In the U.S.: Minneapolis emerges as a revolutionary laboratory — from BLM protests to Ilhan Omar's megaphone, from refugee demographics to DSA insurgents like Omar Fateh. Todd dissects how every loss becomes “proof of rigging,” every setback becomes martyrdom fuel, and how DSA uses Democratic Party infrastructure as a Trojan horse. The episode also examines the limits of fusion: how clerics always outlast Marxist activists, why experiments in “Christian socialism” risk repeating the Jim Jones disaster, and how the Democratic Socialists of America fuse Palestinian solidarity with domestic insurgency. Todd's warning is clear: this is not ordinary politics. It is an insurgency hidden inside institutions, weaponizing identity grievance and class agitation against Western civilization itself. Like it? Rate and review it!    Broadcast times: WBCQ 7490 kHz — Mondays, 10 PM Eastern / 0200 UTC Tuesday WWCR 4840 kHz — Fridays, 11 PM Central / Midnight Eastern / 0400 UTC Saturday More: https://toddzillax.substack.com/

Todd Thompson exposes today's ideological Left as a new religion — with saints, martyrs, blasphemy laws, and holy wars. From DEI rituals to the Jonestown Warning, this broadcast shows how ideology has replaced faith and why the Red–Green Alliance threatens Western civilization. - Broadcast August 22, 2025 on WWCR 4840 kHz from Nashville, this week's edition of The Thompson Show dives headfirst into the theme of ideological religion — the secular Left's new faith, complete with saints, martyrs, blasphemy laws, and holy wars. Todd examines how today's ideological zealots: Canonize their saints and martyrs — from Marx and Lenin to George Floyd and Greta Thunberg. Enforce blasphemy laws in the form of speechcrime and cancellation. Sacrifice truth, tradition, and common sense on the altars of DEI, climate zealotry, gender ideology, and ritualized propaganda. Wage holy wars through riots, uprisings, and cultural purges in the name of “justice.” From Joan Didion's warning about “moral imperatives” to Jacques Ellul's insight on propaganda and orthopraxy, Todd connects the dots between ideological conditioning and religious zeal. He highlights the Boomerang Effect — how integration propaganda meant to normalize (like corporate DEI rituals or Target's pride campaigns) backfires into outrage. The broadcast reaches its climax with the Jonestown Warning: Jim Jones as the original “woke Marxist preacher,” blending Bible verses with socialist slogans, building a utopian commune that ended in mass graves. Todd argues that the same psychology underlies today's woke religion — utopia promised, hysteria enforced, corpses delivered. Closing the show, Todd expands the critique to Europe's blasphemy laws, the UK and Scotland punishing veterans and teachers for “Islamophobia” while excusing Islamist extremism. He ties this selective enforcement to the Red–Green Alliance, showing how the far-Left and Islamists have made common cause against Western civilization. Broadcast times: WWCR 4840 kHz — Fridays, 11 PM Central / Midnight Eastern / 0400 UTC WBCQ 7490 kHz — Mondays, 10 PM Eastern / 0200 UTC Tuesday More: https://toddzillax.substack.com/ Like it? Rate and Review!

COURTESY BAS A live, off-air, half-hour recording of the BBC World Service special Antarctic Midwinter Broadcast on 21 June 2024 beginning at 21:30 UTC. The broadcast, hosted by Cerys Matthews, featured messages and music for the 47 members of the staff of the British Antarctic Survey (BAS) overwintering in Antarctica at the Rothera (Antarctic Peninsula) and King Edward Point and Bird Island (South Georgia) research stations. In addition to personal messages from family and friends, there were interviews with Professor Dame Jane Francis, Director of BAS; Olivier Hubert, a former chef at Rothera and the Halley VI research station; and Nadine Frontier, a marine biologist at King Edward Point; and Allie Clement, an ocean scientist at Rothera. The transmitter came on the air with a test tone (1108 Hz plus harmonics) about a minute before the program started. As sometimes happens, the first few words of the introduction were missed.The recording is of the transmission on 11685 kHz from the BBC's Woofferton, England, transmitting station. The sender had a registered power of 300 kW with antenna beam 182 degrees. The transmission was received on a Belka-DX receiver with a Tecsun AN-03L 7-metre wire antenna outdoors in Hanwell (just outside Fredericton), New Brunswick, Canada, in pseudo-synchronous (AM2) mode with 50 Hz - 2.7 kHz bandwidth. Reception was quite good with little noise or fading and very good signal strength. The additional parallel frequencies of 9585 kHz from Woofferton and 9870 kHz from Ascension were heard but not as well as 11685 kHz. There was a break in transmission at about the 21-minute mark in the recording for approximately one minute. A studio quality, slightly longer, podcast version is available on the BBC World Service website.

copyright NDR Live, off-air, three-hour recording of the special annual Gruss an Bord program from German broadcaster NDR, Norddeutscher Rundfunk, on 24 December 2024 with an introductory "warm-up" segment beginning shortly after 18:00 UTC with Gruss an Bord itself starting at 19:00 UTC. The "warm-up segment" featured reports on seafaring, its economic relevance, and everyday life at sea. Gruss an Bord features music and greetings to and from mariners around the world. The Christmas greetings were recorded at an event in Hamburg. Unlike for the past several years, there was no event in Leer.Relatives and friends had the opportunity to wish their loved ones at sea a happy holiday and a happy new year. The Hamburg event was recorded on 8 December in the Duckdalben International Seamen's Club and was hosted by Birgit Langhammer and Ocke Bandixen. Music was provided by the Swedish-South African duo "Fjarill." The broadcast was primarily in German with some greetings in other languages.In addition to being carried on the NDR Info and NDR Info Spezial networks, the broadcast was transmitted around the world on shortwave using transmitters at Nauen, Germany; Moosbrunn, Austria; Issoudun, France; Tashkent, Uzbekistan; and Okeechobee, Florida, U.S.A.; and was organized by Media Broadcast.The frequencies (kHz) were: 6030 (via Issoudun) for the Northeast Atlantic, 6080 (via Tashkent) for Europe, 9635 (via Moosbrunn) for the Indian Ocean,11650 (via Issoudun) for the Atlantic and Indian Oceans, 13830 (via Nauen) for the Southern Atlantic, and15770 (via Okeechobee) for the Northwest AtlanticThe "warm-up" segment was not carried on the NDR Info Spezial network, which broadcast the children's program Mikado instead. And as the Moosbrunn transmitter took the feed from the NDR Info Spezial network, the "warm-up" segment didn't go out on this shortwave transmitter.The recording is of the transmission on the frequency of 11650 kHz for the full three hours.The program was received outdoors on a Belka-DX receiver in pseudo-synchronous (AM2) mode with a bandwidth of 50 Hz - 2.7 kHz with a Tecsun AN-03L 7-metre wire antenna in Hanwell (just outside Fredericton), New Brunswick, Canada. Reception was fairly good for the most part with a bit of noise at times.

Foundations of Amateur Radio Recently I discussed the idea of listening to the radio spectrum across the internet for the purposes of getting signal into your shack when radios, or in my case, antennas are causing you challenges. I continued to explore and discovered a project by Jacobo EA1ITI, called "radioreceiver". Behind that unassuming name lies a tool born in 2014, that allows you to plug an RTL-SDR dongle into your computer, open up your web-browser, and listen to the radio signals that your dongle can receive. In case you're unfamiliar, an RTL-SDR dongle is a small USB device, looks a lot like a USB thumb drive, jump drive, data stick or flash drive, basically a hunk of plastic with a USB connector on it. An RTL-SDR dongle generally also has some form of antenna connector. It's typically sold as a digital radio and digital television receiver, but websites like rtl-sdr.com sell purpose built ones. They can be found starting at about $15. I realise that this is using a local receiver, with a local antenna, but it's inside a web browser, which is half of what I expected. When you hit the play button in the bottom of the screen, you'll be prompted by your web browser to give permission to access your RTL-SDR dongle and the fun starts. You'll see a live waterfall, hear audio, and have the ability to tune to any frequency you can reach. Depending on your dongle, typically somewhere between 500 kHz and 1.76 GHz. The application consists of seven files, a total of 352 kilobytes that you can store on any web server and run, with one caveat, in order for your web browser to talk to your dongle, it needs to be served using HTTPS. Jacobo has set-up radio.ea1iti.es and I've set-up sdr.vk6flab.com, both showing the same tool. You'll find the code on my VK6FLAB GitHub repository, and of course on Jacobo's. There are some things you need to know. You will need to use a web browser that supports WebUSB, currently that's Chrome, Edge, Opera and several others, sorry, Safari and Firefox don't .. perhaps it's time to talk to Apple and Mozilla. All is explained if you click on the little question mark at the bottom of the screen, it will even tell you if the browser you're using to read the help is compatible or not. If you have an Android phone, you can run this tool too, although you will need to find a way to connect your dongle to your phone. I'm currently limited in my ability to test this and you may need to install some drivers on Windows and Linux, but MacOS and presumably Android, works out of the box. The software also supports offline operation, so you can load it as a Progressive Web App, or PWA, and use it in the field away from the internet. Did I mention that all the decoding is happening inside the web browser, so you can see which code is doing what .. and before you ask, yes, it's minimised in the browser, which you can make into human readable code, but when you look at the source, it shows precisely what is happening, all written in Node.js, TypeScript and JavaScript. It supports CW, SSB, AM, Narrow and Wideband FM and decodes stereo, something which none of my amateur radios do. You might be able to tell that I'm excited. It's because this is providing the basic functionality of a radio inside a web browser, and I didn't need to install it to get started. On the Macintosh I tested this on, I literally opened the web page, plugged in a dongle and hit play. Just so we're clear, just because this is using a web page on a web server, you accessing it will only give you access to your radio not mine. This of course opens the doors to all manner of other fun stuff which I'm expecting to play with for the next little while, and yes, this is also Bald Yak adjacent, I'm aware. In the meantime, you can play with this right now, sdr.vk6flab.com is the place to go. Word of warning, it's addictive and easy to forget it's a radio with an antenna plugged into your computer, so take precautions when electrical storms are about. Look forward to hearing what you discover. I'm Onno VK6FLAB

Episode 2 – August 11, 2025 On this week's WBCQ broadcast, Todd dives deep into one of the most paradoxical coalitions — the Red-Green Alliance between far-left radicals and Islamist extremists. From its historical roots in the Soviet era to its modern presence in universities, activist networks, and even elected offices, Todd begins unpacking how two ideologies with irreconcilable differences unite against their shared enemy: Western civilization, particularly the United States. Along the way, he draws rhyming parallels to Mao's Cultural Revolution, exposes the rhetorical and tactical playbook, and warns what history says will happen if either side wins. Hint: nothing good for Marxists. Who says Todd's always negative?  Find more on Substack at toddzillax.substack.com, and don't miss the debut of Todd's brand-new show on WWCR — premiering this Friday night at 11 PM Central / Midnight Eastern / 0400 UTC Saturday on 4840 kHz.

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) 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)

  The Sacred Lie: Enlightened Masses, Media Manipulation & Digital Pentecostalism In this sharp-edged, high-density solo episode of the Toddzilla X-Pod: Escaping the Cave, Todd Thompson takes a sledgehammer to the sacred myth of democratic wisdom. Are “the people” really wise and self-governing—or are they dopamine-driven echo chambers manipulated by narrative engineers? Using thinkers like Walter Lippmann, H.L. Mencken, Edward Bernays, Jacques Ellul, Jonathan Haidt, and Neil Postman, Todd dissects the machinery of consent and the myth of the Enlightened Voter. He explores how social media rewires brains, how propaganda evolves into an ecosystem, and why moral outrage trumps rational thought in the Age of the Algorithm. Highlights include: The myth of the rational electorate and the machinery that exploits it Bernays' vision of democracy as a theater of persuasion Jonathan Haidt's “elephant and rider” model as the operating system of tribal politics Tristan Harris, humane tech idealism, and why you can't out-design human nature Digital Pentecostalism, identity marketplaces, and the religion of The Crowd A scathing rejection of both populist saviors and technocratic elites The call for epistemic rebellion and radical individual thought in a conformist age Fast-paced and intellectually packed, this episode hits propaganda, technology, digital addiction, tribal identity, and ideological theocracy in under 30 minutes. Not for the faint of thought.   Stream now and don't miss Todd's weekly shortwave show on WBCQ The Planet—Mondays at 10PM Eastern on 7490 kHz. More audio and written content on Substack and YouTube.

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.

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.

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

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.

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!"

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)

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)