Author Archives: Thomas

Dan Robinson Reviews the New Tecsun S-2200X Portable Receiver

Many thanks to SWLing Post contributor and supporter, Dan Robinson, who shares the following review:


Tecsun Delivers The S-2200X – New Life For A 16-Year-Old Cabinet Design

by Dan Robinson

Note: Please see an addendum of updates at the end of this post.

Some months ago, I learned from Anon-co that Tecsun planned to release an update to the S-2000 receiver, which for the past 16 years also sold under other names such as the Grundig Satellit 750 and later the Eton Satellit 750 and Eton Elite 750.

To say that this radio was long in the tooth is an understatement.

I remember seeing one when they first came out back in 2008 and I was never very impressed.  To me, the radio looked like a toy, and the performance did not impress.  The standout feature was the top-mounted rotatable antenna for MW/LW reception.  That was popular with those of us who own the Panasonic RF-2200 and it’s a great tool for MW.

Grundig Satellit 750

While popular with a certain segment of the listening hobby – beginners liked the 750 and even some veteran SWLs appreciated the retro design — the receiver was plagued by annoying issues, such as the famous wobbly tuning knob.  It also had limited selectivity, no synchronous mode, and mediocre SSB.

In 2013, The Monitoring Times (Larry Van Horn) took another look at the radio with the following memorable comments:

[MONITORING TIMES 2013]

“Needless to say some folks were not happy with our review of the 750 including Etón. In retrospect, over four years later, I would not change one single word I wrote in that review.  I believe we honestly gave a fair assessment of the unit that was shipped to us for review. If you read my previous review closely, you would see that most of my concerns back then had to do with quality control issues and most in our industry fully acknowledge that we were seeing some nasty stuff coming out of China back in 2008.”

So, measuring from 2008 when the first Eton 750 came out we’re now in 2024 and Tecsun has decided to preserve the cabinet design of the original radio while substantially upgrading the internals.

Enter the S-2200x

Photo by Anon-Co

Reviewers have obtained units from the first production run.  Tecsun has provided long-needed upgrades that put this radio on the same playing field as the very popular H-501 and PL-990 portables.

The 2200x adds a dedicated SYNC mode with its own front panel button.  AIR band is retained, though sadly coverage doesn’t extend up to give us the NOAA WEATHER frequencies.

My initial testing of the S-2200x shows that performance is excellent on SW, AM, and FM.  In contrast with portables from other manufacturers, SSB performance is excellent – in USB and LSB, tuning is smooth with no “warbling” and using the fine tuning control is a pleasure. Continue reading

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Typhoon Gaemi: Carlos’ Recording of Radio ZP-30, RTI, and Radiofax via the Japan Meteorological Agency

Many thanks to SWLing Post contributor and noted political cartoonist, Carlos Latuff, who shares his radio log art, radiofax, and off-air recordings:

Carlos notes:

The season for hurricanes in the Atlantic and typhoons in the Pacific has arrived, and here I bring you info on typhoon Gaemi via radiofax from Japan Meteorological Agency and radio news from Radio ZP-30 (in German from Paraguay) and Radio Taiwan International (In Spanish via WRMI, US).

Japan Meteorological Agency

Radio ZP-30 and Radio Taiwan International

Click here to view on YouTube.

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Radio Waves: Who Will Pay, Ham Radio Culture, OTH Support, CarnationFM, Night of Nights, and 100 Years of Radio

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 SWLing Post contributors Richard Cuff, Dennis Dura,
David Korchin, Roger Fitzharris, David Iurescia, and NT for the following tips:


In 1924, a magazine ran a contest: “Who is to pay for broadcasting and how?” A century later, we’re still asking the same question (NiemanLab)

Radio Broadcast received close to a thousand entries to its contest — but ultimately rejected them all.

After yet another day reading about audio industry layoffs and show cancellations, or listening to podcasts about layoffs and show cancellations, I sometimes wonder, “With all this great audio being given away for free, who did we think was supposed to pay for it all?”

I find some consolation in the fact that that question is more than a century old. In the spring of 1924, Radio Broadcast posed it in a contest called “Who is to Pay for Broadcasting and How?”The monthly trade magazine offered a prize of $500 (more than $9,000 in today’s dollars) for “a workable plan which shall take into account the problems in present radio broadcasting and propose a practical solution.”

The need for such a contest more than 100 years ago is revealing enough, but the reaction of the judges to the prize-winning plan turned out to be even more so — and it says a lot about why business models for audio production and broadcast remain a struggle. [Continue reading…]

The Rich History of Ham Radio Culture (The MIT Press Reader)

Drawing on a wealth of personal accounts found in magazines, newsletters, and trade journals, historian Kristen Haring provides an inside look at ham radio culture and its impact on hobbyists’ lives.

Every night thousands of men retreat to radio stations elaborately outfitted in suburban basements or tucked into closets of city apartments to talk to local friends or to strangers on the other side of the world. They communicate by speaking into a microphone, tapping out Morse code on a telegraph key, or typing at the keyboard of a teletypewriter. In the Internet age, instantaneous, long-distance, person-to-person communication seems ordinary. But amateur radio operators have been completing such contacts since the 1910s. The hobbyists often called “hams” initially turned to radio for technical challenges and thrills. As the original form of wireless technology became more reliable and commonplace in the 1930s, ham radio continued as a leisure activity. Hams formed a community through the same general practices of other social groups. They set conditions for membership, established rules of conduct, taught values, and developed a specialized vocabulary known only to insiders. What made hams’ culture different was its basis in technology. In her book “Ham Radio’s Technical Culture,” excerpted below, historian of science and technology Kristen Haring draws on a wealth of personal accounts found in radio magazines and newsletters and from technical manuals, trade journals, and government documents to illustrate how ham radio culture rippled through hobbyists’ lives. [Continue reading…]

CarnationFM: A Decentralized Radio Playing Songs With Encrypted Hidden Messages (Coin Desk)

CarnationFM emerged from EthBerlin 2024 and won the award for Best Social Impact.

Berlin, Germany: A music-focused radio FM which allows songs to act as a transport vessel for hidden messages has emerged from EthBerlin 2024. CarnationFM was created by five hackers and a mentor as a defensive, decentralized and encrypted communication tool enabling private messaging that safeguards anonymity.

The project, which won the award for the Best Social Impact at EthBerlin 2024, is focused on creating real world use cases factoring in privacy in the aftermath of the Alexey Perstev verdict. Alexey Perstev, one of the co-founders of Tornado Cash, was sentenced to 64 months in prison in May.

The verdict rattled the decentralized community because it suggested that a coder could be held responsible for everything that happens using that code. Perstev was found guilty because his open-source mixer Tornado cash allowed North Korea’s infamous Lazarus group to launder millions in crypto. [Continue reading…]

Nation’s last Morse code station comes back to life on annual ‘Night of Nights’ in Point Reyes (The Mercury News)

KPH, established in Point Reyes and Bolinas in 1913, will exchange messages with Morse code enthusiasts around the world

On July 12, 1999, the nation’s final message in Morse code was sent out to sea from a remote Bay Area radio station. The end of an era, the room’s mood was mournful. Grizzled old men wept.

“We wish you fair winds and following seas,” it said, offering a seafarers’ traditional farewell in a staccato stream of dots and dashes. And then the station went silent.

But every July 12, the golden age of maritime radio comes back to life. [Continue reading…]

Navy researchers ask Envisioneering to support over-the-horizon radar that relies on HF radio signals (Military Aerospace Electronics)

Over-the-horizon radar typically uses HF radio signals at frequencies between 2 and 30 MHz to reach beyond the horizon in open-ocean areas.

WASHINGTON – U.S. Navy researchers needed to help develop a new prototype High Frequency (HF) over the horizon (OTH) radar system. They found a solution from Envisioneering Inc. in Alexandria, Va.

Officials of the Naval Research Laboratory (NRL) in Washington announced a $45.4 million contract to Envisioneering Inc. on Monday for design, development and integration of a mobile over-the-horizon radar (MOTHR).

Over-the-horizon radar typically uses HF radio signals at frequencies between 2 and 30 MHz to reach beyond the horizon in open-ocean areas. HF signals bounce off the ionosphere to achieve long distances and operate beyond the curvature of the Earth.

Envisioneering will work alongside the NRL research team to support key areas such as refinement of system requirements; system and subsystem design; mechanical analysis; specifying and procuring long-lead items; integration; testing; and signal processing. [Continue reading…]

100 Years of 100 Things: Radio (WNYC)

Continuing our centennial series 100 Years of 100 Things, Matthew Barton, curator of recorded sound at the Library of Congress, walks us through the history of radio.

100 Years of 100 Things is part of WNYC’s centennial celebration. Each week, we’ll take listeners through a century’s worth of history of things that shape our politics, our lives and our world. Topics will include everything from immigration policy to political conventions, American capitalism to American socialism, the Jersey Shore to the Catskills, baseball to ice cream.

Click hee to listen via WNYC.


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Winning with flare: An easier path to the W9IMS Checkered Flag Award

By Brian D. Smith

NASCAR comes to Indy this Sunday, which means that from now until then, you have a chance to snare the third and final QSL card in the 2024 set of amateur radio station W9IMS. Better yet, you can earn this year’s Checkered Flag Award with less effort than usual, thanks to the unforeseen effects of a mischievous sun.

Back in early May, the W9IMS crew staged their first special event of the year, commemorating the IndyCar Grand Prix at the Indianapolis Motor Speedway. But a series of solar flares spoiled the party, making it difficult for many stations to connect with W9IMS.

Since the usual requirement of the Checkered Flag Award is to work or tune in all three W9IMS special events in a given year, the uncharacteristically low number of Grand Prix contacts seemed destined to result in an uncharacteristically low number of certificate recipients.

So club officers changed the rules. This year, you can qualify for the award with credits for any two of the three special events: the Grand Prix and Indy 500 in May, and the upcoming NASCAR 400 at the Brickyard.

Of course, it’s best to bag all the events and claim the trio of ’24 QSL cards along with the certificate. But for anyone who went 1-for-2 in May, the coming week is your last opportunity to add more W9IMS wallpaper to your shack. The station will be on the air through 11:59 p.m. Sunday, July 21 (Indianapolis time)/0359 UTC Monday, July 22.

W9IMS operates primarily on 20 and 40 meters, but occasionally adds 80 meters later in the week (and occasionally 2 meters on Race Day for locals and fans in the stands at the Speedway). Preferred frequencies are 14.245 and 7.245 SSB, plus or minus QRM.

A few tips on locating W9IMS:

  1. Check DX Summit (www.dxsummit.fi) for spots listing the current frequency or frequencies of W9IMS. You can customize your search by typing “W9IMS” in the box at upper right.
  2. Go to the W9IMS web page (www.w9ims.org) and look for the heading, “2024 Operating Schedule.” Click on the “NASCAR 400 at the Brickyard” link, which opens into a weeklong schedule of individual operators and their reserved time slots. Although operators frequently get on the air at unscheduled times, your odds of catching the station improve significantly during hours with a listed op.
  3. Prime time for weeknight operations is 6 to 10 p.m. in Indy (2200-0200 UTC). That’s also your most likely shot at finding W9IMS active on two bands. However, it’s not unusual for operators to continue till midnight or later if band conditions allow.
  4. Remember that the published schedule can be shortened by adverse circumstances, such as local thunderstorms, a lack of calling stations and, as we discovered in May, solar flares! Don’t wait till the final hour to look for W9IMS.
  5. But if you still haven’t worked W9IMS by the final weekend, don’t give up too soon. Toward the end of the special event, W9IMS ops often call for “only stations that haven’t worked us this week” and/or switch to contest-style operations, exchanging only signal reports to put more calls in the log.
  6. Keep in mind that both hams and SWLs are eligible for QSL cards and the certificate. So if your ham station isn’t able to work W9IMS by Sunday night, you can create an SWL report by copying down details of successful contacts – such as date, frequency, UTC, and the callsigns of several stations you heard W9IMS working. SWL reports count as credits too, although the certificate may feature your name instead of your call.
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“Medium wave’s sunset in Europe”

Many thanks to SWLing Post contributor, Alan, who shares the following article from Red Tech:

Medium wave’s sunset in Europe (Red Tech)

GENEVA — European medium-wave transmitters are going silent. On April 1, the BBC shut down the nine transmitters that had previously brought BBC Radio 4 in AM to the whole country. Since January 2018, the British public broadcaster has started to switch off the AM transmitters for its local stations. Looking ahead, it plans to abandon the band totally by 2027 at the latest.

This trend goes beyond the BBC. In the last years, British commercial broadcasters have also switched off AM transmitters. In the case of Bauer Media, not a single AM transmitter remains operational.

The United Kingdom is the last fortress of AM transmission in Europe. Over the last 15 years, many other countries disconnected their last AM transmitters — Austria (in 2008), Switzerland (2010), Ireland (2012), Germany (2015), Belarus (2016), Albania (2017) and Belgium (2018), to name a few. More than 20 European countries have ceased AM transmission. Across the continent, less than 100 AM services remain active.

Notwithstanding, AM still resists against all odds in markets such as Estonia, Greece, Hungary, Poland, Portugal, Romania and Spain, among others. However, many big broadcasters still relying on this technology have often reduced their transmission power without receiving complaints from the audience. This is a strong signal about how the future may look like. [Continue reading…]

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Amazon’s Prime Day: Radios and accessories on sale

Today is Amazon’s Prime Day and there are a number of radios and accessories at a heavier discount than they normally would be. I’ve been browsing this morning and made a list of some of the shortwave radio products included in the sale. Please note that the following links are Amazon affiliate links that also support the SWLing Post at no extra cost to you. Thank you!

There are actually many more models of shortwave radios (click here) and ham radio accessories (click here) in the sale today. I’ll try to add other items of interest today.

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Carlos’ Shortwave Art from NHK and Radiofax via Kyodo News

Many thanks to SWLing Post contributor and noted political cartoonist, Carlos Latuff, who shares his radio log art of a recent broadcast of NHK Japan.


Carlos notes:

Part of NHK news bulletin, in Japanese, about Trump assassination attempt.

Click here to view on YouTube.

Kyodo News Radiofax

[T]his is the radiofax I got today from Kyodo News, with two front pages dedicated to the assassination attempt. Click here for the original radiofax audio file.

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