Monthly Archives: June 2022

Radio Waves: Plasma Bomb from the Sun, Radio to Russia, Radio Aquarius, and Universal Taking Eton Elite Satellit Orders

Radio Waves:  Stories Making Waves in the World of Radio

Welcome to the SWLing Post’s Radio Waves, a collection of links to interesting stories making waves in the world of radio. Enjoy!

Many thanks to Eric Jon Magnuson for summarizing these news items for Radio Waves!


Here Comes the Sun—to End Civilization (Wired)

Every so often, our star fires off a plasma bomb in a random direction. Our best hope the next time Earth is in the crosshairs? Capacitors.

TO A PHOTON, the sun is like a crowded nightclub. It’s 27 million degrees inside and packed with excited bodies—helium atoms fusing, nuclei colliding, positrons sneaking off with neutrinos. When the photon heads for the exit, the journey there will take, on average, 100,000 years. (There’s no quick way to jostle past 10 septillion dancers, even if you do move at the speed of light.) Once at the surface, the photon might set off solo into the night. Or, if it emerges in the wrong place at the wrong time, it might find itself stuck inside a coronal mass ejection, a mob of charged particles with the power to upend civilizations.

The cause of the ruckus is the sun’s magnetic field. Generated by the churning of particles in the core, it originates as a series of orderly north-to-south lines. But different latitudes on the molten star rotate at different rates—36 days at the poles, and only 25 days at the equator. Very quickly, those lines stretch and tangle, forming magnetic knots that can puncture the surface and trap matter beneath them. From afar, the resulting patches appear dark. They’re known as sunspots. Typically, the trapped matter cools, condenses into plasma clouds, and falls back to the surface in a fiery coronal rain. Sometimes, though, the knots untangle spontaneously, violently. The sunspot turns into the muzzle of a gun: Photons flare in every direction, and a slug of magnetized plasma fires outward like a bullet.

The sun has played this game of Russian roulette with the solar system for billions of years, sometimes shooting off several coronal mass ejections in a day. Most come nowhere near Earth. It would take centuries of human observation before someone could stare down the barrel while it happened. At 11:18 am on September 1, 1859, Richard Carrington, a 33-year-old brewery owner and amateur astronomer, was in his private observatory, sketching sunspots—an important but mundane act of record-keeping. That moment, the spots erupted into a blinding beam of light. Carrington sprinted off in search of a witness. When he returned, a minute later, the image had already gone back to normal. Carrington spent that afternoon trying to make sense of the aberration. Had his lens caught a stray reflection? Had an undiscovered comet or planet passed between his telescope and the star? While he stewed, a plasma bomb silently barreled toward Earth at several million miles per hour. [Continue reading at Wired…]

Radio To Russia: Can Old Technologies Make A Dent In Putin’s Information Blockade? (Information Professionals Association)

The following article is an original work published by the Information Professionals Association. Opinions expressed by authors are their own, and do not necessarily reflect the views of or endorsement by the Information Professionals Association.

By Tom Kent

As Vladimir Putin tightens his stranglehold on what his citizens see and hear, will radio once again become an effective way to get outside voices into Russia?

For the time being, U.S. broadcasting officials believe the best way to get their content to Russia’s population is still through the internet, despite all of Putin’s attempts to control it. Activists in the United States and Europe, however, are convinced that in a wartime situation, those wanting to reach Russians should be trying everything – including shortwave radio, the mainstay of Cold War broadcasting by the Voice of America (VOA) and Radio Free Europe/Radio Liberty (RFE/RL).

The U.S. government’s reluctance to return to shortwave has led to the odd spectacle of American volunteers taking broadcasting into their own hands. Activists have crowdfunded projects to transmit on shortwave channels programs produced by VOA and RFE/RL that the government declines to broadcast with its own transmitters.

Shortwave broadcasting uses high frequencies that can reach across continents. During Soviet rule, VOA, RFE/RL, the British Broadcasting Corporation (BBC) and other stations used shortwave to punch news, religious programs and forbidden Western music through the Iron Curtain. Soviet jamming stations tried to drown out the broadcasts, but much of the content got through.

With the collapse of the Soviet Union and the rise of the internet in Russia, foreign shortwave broadcasting tapered off. Boris Yeltsin let RFE/RL open local stations in some 30 Russian cities, but under Putin they were forced to close because of Russian laws. The United States then switched its radio and video services for Russians almost entirely to the web and social networks.

Since the war began, however, Russian authorities have increasingly blocked from the internet any content that criticizes the war or Putin’s rule. Many Russians use VPNs and other software to get around the blocks, and have come to the US broadcasters’ websites and social network feeds in droves. But Russian officials are working feverishly to block these circumvention tools, and may be able to determine which citizens are using them. [Continue reading on the IPA website…]

An Epic Tale of Pirate Radio in its Golden Age (Hackaday)

With music consumption having long ago moved to a streaming model in many parts of the world, it sometimes feels as though, just like the rotary telephone dial, kids might not even know what a radio was, let alone own one. But there was a time when broadcasting pop music over the airwaves was a deeply subversive activity for Europeans at least, as the lumbering state monopoly broadcasters were challenged by illegal pirate stations carrying the cutting edge music they had failed to provide. [Ringway Manchester] has the story of one such pirate station which broadcast across the city for a few years in the 1970s, and it’s a fascinating tale indeed.

It takes the form of a series of six videos, the first of which we’ve embedded below the break. The next installment is placed as an embedded link at the end of each video, and it’s worth sitting down for the full set.

The action starts in early 1973 when a group of young radio enthusiast friends, left without access to a station of their taste by Government crackdowns on ship-based pirate stations, decided to try their hand with a land-based alternative. Called Radio Aquarius, it would broadcast on and off both the medium wave (or AM) and the FM broadcast bands over the next couple of years. Its story is one of improvised transmitters powered by car batteries broadcasting from hilltops, woodland, derelict houses, and even a Cold War nuclear bunker, and develops into a cat-and-mouse game between the youths and the local post office agency tasked with policing the spectrum. Finally having been caught once too many times, they disband Radio Aquarius and go on to careers in the radio business.

The tale has some tech, some social history, and plenty of excitement, but the surprise is in how innocent it all seems compared to the much more aggressively commercial pirate stations that would be a feature of later decades. We’d have listened, had we been there!

Not only pirate radio has made it to these pages, we’ve also brought you pirate TV!

Click here to wattch the first installment on YouTube.

Click here to read the full article on Hackaday.

Universal Radio Taking Eton Elite Satellit Orders

Dave (N9EWO) reports:

Eton dealer “Universal Radio” in Ohio USA is accepting orders as of June 28, 2022 for the Eton Elite Satellit ($ 599.99 + $ 14.95 USA shipping, sorry Universal will NOT ship outside the USA) for late July 2022 delivery. The new Eton Elite Executive HD ($ 249.99 tentative) is now listed for November 2022 release (sorry no pre-orders are being accepted yet).


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Chip shortage likely to cause low Tecsun inventory

I received a message from a reader recently regarding the Tecsun PL-330. They pointed out that Tecsun listed the PL-330 as “Discontinued” but I’ve confirmed that this is not the case. This is simply a poor translation/word choice.

The PL-330 is still very much in production, however I also learned the global chip shortage is hitting Tecsun (and most other radio manufactures) quite hard right now.

I checked with Anna at Anon-Co and she confirmed that they still have inventory of the PL-330 and other Tecsun models, but the chip shortage will almost certainly affect radio availability once her existing inventory is depleted.

I’m not sure any of us would be surprised to learn this because the chip shortage is having impact across multiple industries and modern DSP shortwave receivers are very chip-dependent.

I follow economic news pretty closely and most experts agree that the chip shortage may create issues for the next year or even two. Indeed, there’s even a shortage of “chips to make chips.”

No worries and no need to panic, though, as we’ll get through this. I would suggest not waiting to bite the bullet if you’ve been planning to purchase a new DSP-based portable radio in the nearish future.

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Alexander shares a few photos and notes from Hamradio 2022 in Friedrichshafen

Many thanks to SWLing Post contributor, Alexander (DL4NO), who shares the following photos and notes from Friedrichshafen:


First Hamradio After Two Years

Alexander (DL4NO)

Finally the biggest amateur radio event in Europe happened again: Last weekend hams from Germany, Austria, Switzerland, France, Italy, Poland, Belgium, Netherlands, GB and more gathered in Friedrichshafen. The location is quite attractive, in Germany but near Austria and Switzerland. I could not get any numbers yet. But the event was quite a bit smaller than in 2017 when I was there the last time.

As every year amateur radio societies from Europe and the ARRL had booths. The most remarkable was from the Austrian OeVSV with their own stage. They had their own, quite interesting lectures. For example Austrian Hams have used the geostationary satellite QO-100 for LoRa experiments. They are quite active with LoRa as this technology allows to transmit data quite slowly, but quite far and with a minimum of power. Their project is called MeshCom. Continue reading

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Giuseppe’s latest homemade ferrite antenna for MW and SW

Many thanks to SWLing Post contributor, Giuseppe Morlè (IZ0GZW), who writes:

Dear friends,

I’m Giuseppe Morlè from Formia, central Italy on the Tyrrhenian Sea.

I want to share with you my latest ferrite antenna for listening; it is composed of 3 ferrites of 20 cm each in a tube for electrical systems with 2 separate windings, one for medium waves and one for short waves, 40 turns for medium waves, 4 turns for short waves. I use a 750 pf variable to tune the 2 windings and a switch is used to eliminate a winding.  Since there is only one variable, if you listen to the medium waves I interrupt the winding of the shorts.

On shortwaves it is preferable to place the system on an iron railing which, due to inductive effect, behaves like a really long wire antenna.

For the mediumwaves it is enough to bring the receiver close to the ferrites and also in this case, the induction will have its effect with an excellent increase in signal and modulation.

The range of this portable antenna is:

      • 520 to 1800 kHz
      • 3.500 to 18.000 MHz

Here’s a video from my Youtube channel where I explain how it works:

I had previously built a similar antenna but with 12 cm ferrites–very portable.

Thank you for your attention and I wish you good listening.

73. Giuseppe Morlè iz0gzw.

This is brilliant, Giuseppe! I love how you never stop building and experimenting with various antenna designs! Thank you for sharing this with us!

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New and Special Programs From Radio Angela


Bill Tilford, Curator of Radio Angela (WBCQ 5130 kHz) writes:
This week, Radio Angela (WBCQ 5130 kHz) has the following special broadcasts:

Thursday, June 30 0200-0300 UTC (Wed 10pm-11 EDT):  WBCQ Open Mic
This edition of WBCQ’s occasional “Week 5” broadcast includes a blues band from Argentina, Indonesian Dangdut (pop) submitted by a listener in Greece and other surprises.
Thursday, June 30 0300-0400 UTC (Wed 11pm-Midnight EDT):  WBCQ Polka Party
In this special broadcast, Marion and Kristina of Marion’s Attic present a rollicking polka party that includes music from a current polka star along with some great vintage recordings.
Friday July 1 0300-0400 UTC (Thurs 11pm-Midnight EDT):  WBCQ Comedy Ration
Who couldn’t use a laugh about now?

On Saturday, July 2 from 0200-0300 UTC (Fri 10pm-11pm EDT), two new weeklies begin:
Saturday 0200-0230 (Fri 10pm-10:30 EDT): Orwellian Airwaves With Lainie Petersen
Lainie, an arts and public affairs producer and commentator on World Perspectives Radio and Hard Lens Media, reads from Orwell’s works.  1984 begins this Friday.
Saturday 0230-0300 (Fri 10:30pm-11:00 EDT): Greek Music Refuge
Having decided that a shortwave spectrum without any Greek music in it is unacceptable, Bill Tilford presents a balm from his own impressive collection until something better comes onto the airwaves. 

 

 

 

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FM World reports that RAI will end mediumwave broadcasts later this year

Many thanks to SWLing Post contributor, Pedro Andrade, who shares the following article. Note that the following excerpt has been translated by Google from Italian to English. Click here for the original in Italian at FM-World.it:

On 11 September 2022 Rai radio broadcasts in medium wave will cease (FM World)

Before the end of the summer, Rai will end radio broadcasts in medium wave .

[…]The news, already anticipated in recent months by sector magazines such as Italradio , is made known by the Easy Web section of Rai .

Everything comes from the audio description for the blind, available for some programs in the second audio track of the TV channel concerned, but also in medium wave on Rai Radio1 .

With regard to this latter service, the site (accessible by clicking HERE) specifies that “from 11 September 2022, due to the termination of Rai radio broadcasts in medium wave modulation, the audio descriptions of television programs for the blind will be available only on dedicated audio of digital terrestrial television.

The regular Rai radio programs , therefore, will continue in FM , DAB + , web and app .

Thanks for the tip, Pedro.

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Voice of Korea via Digital Radio Mondiale (DRM)?

Many thanks to SWLing Post contributor, Paul Jamet, who writes:

Hi Thomas,

Several listeners have posted videos on YouTube about receiving broadcasts of “The Voice of Korea” on 6140 kHz DRM – Digital Radio Mondiale.

One video in particular caught my attention, from Indian listeners in the Kerala region:

Indeed, these headphones use a Chinese receiver, the G-226 from GOSPELL which is also sold by TECSUN in Australia: https://www.tecsunradios.com.au/store/product/tecsun-drm-radio/

So, you can see how this receiver works.

All this has aroused my curiosity! And yesterday, Friday 17 June 2022, at 20:00 UTC I connected to several kiwi SDRs in the Pacific area. The DRKP signal could be picked up almost 8,000 km from the transmitter site near Pyong-Yang.

Here attached a screenshot and an audio file recorded with a kiwi SDR located a few kilometres away near Perth, Australia – Distance according to Google Maps, about 7960 km

The signal is encoded in AAC and not xHE AAC

[Audio: Note that the audio level jumps several times, so don’t turn up the volume too high.]

Who is this program for? According to Indian radio listeners, probably to the North Korean fleet in the Pacific. To be continued.

Have a nice weekend. Yours sincerely

Paul JAMET

I would have never guessed VOK would broadcast in DRM. Very interesting indeed. Perhaps we’ll learn more about this with time or someone can confirm whether or not this is actually VOK. Thank you for sharing this, Paul!

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