Category Archives: Mediumwave

Radio Waves: My Father’s Radio, AM Listenership by State, and Longevity of AM in Cars

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 Kim Elliott and Dennis Dura for the following tips:


Opinion: My father may be gone, but ‘our’ radio is still going (LA Times)

My most prized possession was once somebody’s trash.

It’s a blocky, black radio that was manufactured in 1941, the year my father was 12 years old. I snatched it from the county landfill when I was 13, in 1978.

The person who threw it away must have determined they couldn’t fix it, though it seemed they thought someone else might. They had set the radio off to the side of the dumpster, safe in plain view, just in case some industrious person with know-how appeared.

That person was my father, who ran an electronics repair business from our garage. Though at first reluctant to save “that ugly old thing,” he seemed pleased hours later when he entered the kitchen announcing that the radio worked fine and had only needed a tube. For years after this, my father kept that radio on a shelf above his workbench, listening to country singers croon about lonesome truckers.

I like to think of myself as a minimalist, but since my father died in 1994, I’ve carried what I consider to be “our” radio thousands of miles from the Appalachian farm where I grew up, out to Los Angeles, and then many years later back home again. In California, I’d tune our radio to horse races being transmitted from Santa Anita or Hollywood Park while cleaning my kitchen. Or I listened to Paul Harvey, Casey Kasem or evangelists spouting “truths” about Jesus and cars. [Continue reading…]

AM Listenership by State, DMA (Radio World) 

New analysis of AM reach provides market-level insight to listening habits

Following up its recent report on the 141 local markets where at least 20% of the market listens to AM radio, Nielsen has released a deeper look with new data at the state- and DMA-level.

Pierre Bouvard, chief insights officer of the Cumulus Media / Westwood One Audio Active Group, recently posted an analysis of the findings. The data comes from the Fall 2022 survey, but is based on all U.S. radio stations, not just Nielsen subscribers.

Nationwide, 30.9% of radio reach comes from AM stations, representing 82,346,8000 American radio listeners aged 12+ who listen to AM every month. At the state level it ranged from a high of 52.7% in North Dakota to a low of 4.6% in the District of Columbia. In 29 states, the percent of radio reach via AM is greater than 20%. [Continue reading…]

Not All Those AM Listeners Are in Cars, Bozzella Argues (Radio World)

Auto group also says it would take two decades for fleet to turn over and AM to phase out

“Whether or not AM radio is physically installed in vehicles in the future has no bearing on the multiple methods of delivering those emergency communications alerts to the public.”

So writes the president and CEO of the Alliance for Automotive Innovation. John Bozzella used a blog post this past week to summarize the auto industry’s case against a mandate to include AM radio in cars.

It’s simply not necessary, he wrote; and government shouldn’t be propping up a particular technology that’s competing with other communications options, either.

“It’s tempting to take a cheap shot at misplaced government priorities and unnecessary mandates or make light of the whole thing with a jab about laws for hand-crank windows or cassette players,” he writes, calling the legislation a bipartisan solution searching for a problem. [Continue reading…]


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Radio Waves: Sri Lanka DRM, Czech Radio, Ham Radio Ops Ready for Disaster, Space Pirates, FM Not Far Behind AM, and AM Hearing Live Today

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 Dennis Dura, David Iurescia, John Palmer, Gareth Buxton, and Mangosman for the following tips:


Sri Lankan Broadcaster Goes DRM Following Listeners’ Request (DRM Consortium)

The international service of the Sri Lankan Sri Lanka Broadcasting Corporation (SLBC) recently doubled its Tamil Service airtime to two hours, on 873 kHz AM (medium wave) from Puttalam transmitter. The new schedule is 0130-0330 UTC (7.00 am to 9.00 am IST). This is partly in response to individual efforts of listeners, many in the southern part of India, in Bengaluru. Introducing this change, Colombo International Radio also announced that shortly they are going to use DRM on 1548 kHz! This will be done by is using the old transmitter of Deutsche Welle located in the north of Sri Lanka at Trincomalee. The Sri Lankan public broadcaster has started airing the DRM announcement:

The publicity for the new DRM service is in full swing. See video:

Czech Radio centenary: Listeners send congratulations (Czech Radio)

On the occasion of Czech Radio’s centenary, we asked our listeners to let us know where they heard our special programme on that day in order to map Radio Prague International’s broadcast reach today. Here are at least some of the many letters and photos which you have sent us. Thank you to all our loyal fans.

George Jolly, who was listening to our special programme over the internet, wrote from Houston, Texas:

“Thank you so much for the special program today celebrating your 100 years of radio. If I were not so far away, I would surely visit you on Saturday. It means a lot to me that you continue the tradition of the ‘radio magazine’. Hearing the opera excerpt and other recordings from the past was wonderful!

“I love old music and old technology like radio, and I love that you are keeping their spirit alive and new again for today’s world. I am so grateful to celebrate your centenary with you from afar.”

Another listener from the United States is Timothy Marecki, who wrote us from New Port Richey in Florida: Continue reading

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Don Moore’s Photo Album: Western Venezuela

Many thanks to SWLing Post contributor, Don Moore–noted author, traveler, and DXer–for the latest installment of his Photo Album guest post series:


Don Moore’s Photo Album: Western Venezuela

by Don Moore

I started this series several months ago with pictures of Ecos del Torbes and other stations in San Cristóbal, Venezuela. This time I want to take you to the other places I visited on that trip to Andean Venezuela in January 1995.

When I started DXing in the early 1970s, Venezuelans were the most commonly heard Latin American shortwave stations. The 90- and 60-meter bands were full of them and there were more than a few to be heard in the 49- and even 31-meter bands. But the Venezuelans began abandoning shortwave before other countries in the region and by the late 1970s their numbers had been considerably thinned. Only a handful remained in the early 1990s.

This radio dial [click to enlarge] goes back to a time when Latin American stations were found all over the radio bands.

One of the last Venezuelan stations to leave shortwave in the 1990s was Radio Valera in the busy commercial city of Valera.

For decades, Radio Valera was one of the best heard and most consistent Venezuelan stations on 60 meters. Roque Torres Aguilar, waving on the left side, was station manager at the time of my visit.

I’ve found listings in DX publications for their 4840 kHz frequency as far back as 1946.

I was given this 59th anniversary key chain when I visited Radio Valera in January 1995. So the station must have begun around 1935.

Station studio in 1995.

A second shortwave station in the state of Trujillo was Radio Trujillo in the nearby town of the same name. Broadcasting on 3295 kHz, they were one of the easier catches in the 90-meter band in the early 1970s but were gone by the late 1970s. Continue reading

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Radio Waves: talkSPORT Proposal to Reduce AM, AM Radio Petition, Secret Life of Machines, Navy Signal Intelligence, and DRM General Assembly

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 Dave Porter, Mark Hirst, Stuart Smolkin, Bill Forcier, and “Mangosman” for the following tips:


talkSPORT – Proposals to reduce AM Coverage (OfCom)

talkSPORT Limited (“talkSPORT”) submitted a request to reduce the coverage of its national AM
(medium wave) commercial radio service from 93% to 89.9%, by ceasing transmissions from the
following four of its twenty-two transmitter sites:

  • Dumfries (Dumfries & Galloway)
  • Kingston upon Hull (East Riding of Yorkshire)
  • Fern Barrow (Bournemouth)
  • Greenside Scalp (Tayside)

We consulted on the request with a preliminary view that we were minded to approve it. We have had regard to the responses we have received in reaching our decision. We received two responses agreeing with the proposal and four disagreeing. In section 3 below, we summarise stakeholders’ comments, assess them and outline the conclusions we have reached.

What we have decided – in brief

Ofcom has decided to approve the request submitted by talkSPORT Limited to reduce its AM
(medium wave) coverage by ceasing transmissions from four of its transmitter sites.

Click here to read the full PDF brief.

Save AM Radio – A Part of the Emergency Alert System! (Change.org)

In times of emergency AM Radio could be your only source of information.

AM Radio is part of the Emergency Alert System, so critical life saving information during hurricanes, floods, blackouts and other disasters are delivered to you via AM Radio.

Certain car manufacturers have dropped AM Radio from their current and future vehicles.

This profit motivated move by car manufacturers is dangerous!

Sign the petition to maintain broadcast AM Radio in current and future vehicles, including electric vehicles.

Click here for more information and to sign.

End of a love affair: AM radio is being removed from many cars (Washington Post)

Note: The Washington Post article about AM being removed from cars is behind a paywall. The link provided may give you free access.

America’s love affair between the automobile and AM radio — a century-long romance that provided the soundtrack for lovers’ lanes, kept the lonely company with ballgames and chat shows, sparked family singalongs and defined road trips — is on the verge of collapse, a victim of galloping technological change and swiftly shifting consumer tastes.

The breakup is entirely one-sided, a move by major automakers to eliminate AM radios from new vehicles despite protests from station owners, listeners, first-responders and politicians from both major parties.

Automakers, such as BMW, Volkswagen, Mazda and Tesla, are removing AM radios from new electric vehicles because electric engines can interfere with the sound of AM stations. And Ford, one of the nation’s top-three auto sellers, is taking a bigger step, eliminating AM from all of its vehicles, electric or gas-operated.

Some station owners and advertisers contend that losing access to the car dashboard will indeed be a death blow to many of the nation’s 4,185 AM stations — the possible demise of a core element of the nation’s delivery system for news, political talk (especially on the right), coverage of weather emergencies and foreign language programming.

“This is a tone-deaf display of complete ignorance about what AM radio means to Americans,” said Michael Harrison, publisher of Talkers, a trade journal covering the talk radio industry. “It’s not the end of the world for radio, but it is the loss of an iconic piece of American culture.” [Possible paywall: Continue reading…]

Secret Life Of Machines – The Radio (Vintage Episode on YouTube)

Click here to view on YouTube.

Signals intelligence teams reposition to face China, Russia (Navy Times)

TAMPA, Fla. — Special operations signals intelligence teams say they need smaller, more versatile gear that gathers and shares data on the breadth of radio frequencies in all domains — land, sea, air and now space.

The mission has shifted dramatically as the United States ratchets up competition in the frequency bands with peer competitors like Russia and China, a far cry from deciphering mobile phone signals from violent extremists, officials said.

That’s one request to industry within a small slice of a larger portfolio under U.S. Special Operations Command Program Executive Office-Special Reconnaissance.

On Wednesday, a panel of program managers ticked off the varied sensor, communications and intelligence gear the office wants during the Global SOF Foundation’s SOF Week here.

Their efforts to upgrade and improve collection and dissemination of data continues in an ever-more crowded radio frequency spectrum across, and beyond, the globe. [Continue reading…]

DRM Is Smart and on the Way Up (Radio World)

“It’s versatile, flexible and spectrum and energy efficient — so much more so than classic radio broadcast”

The author is chairman of the DRM Consortium. Her commentaries appear regularly at radioworld.com.

This was the conclusion and feeling of the in-person and Zoom participants in the Digital Radio Mondiale Consortium General Assembly, held on the sunny island of Mallorca Spain.

Who Uses DRM?
The sky was blue and the boats were swaying in the harbor, but the participants from countries as far apart as India, Brazil, Denmark, South Africa — and other African countries like Egypt, Indonesia, Hungary, Germany and the UK — had other fish to fry.

They wanted to know about DRM in India, where more pure DRM hours are being carried, including dedicated content like news and cricket. More MW transmitters will be inaugurated there, but the decision for the FM digitization is still pending. Last year, Ernst & Young consultants concluded in a study for the I@B Ministry that radio digitization is not only technically beneficial, but also financially. “Digital Radio can help grow the Radio Segment in India by three times over five years.” The local automotive industry, with almost six million new Indian cars equipped with DRM radios, is also very interested in the decision. The big Indian and international car brands, eying a return on their huge investments, are ready to quickly software upgrade the existing DRM AM receivers to digital DRM FM. [Continue reading…]


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20th Edition of the Global Radio Guide (Summer 2023) Now Available

Many thanks to SWLing Post contributor, Gayle Van Horn (W4GVH), who shares the following announcement:


20th Edition of the Global Radio Guide (Summer 2023) Now Available

While the world looks on in awe at dazzling displays of aurora, reaching ever closer to our planet’s equator, radio hobbyists are equally excited at the impacts our sun’s increased activity has had on the radio spectrum.

From enhanced propagation on the higher HF bands, to more frequent auroral activity on mediumwave and even hobbyists tuning in to the ionosphere itself through ‘natural radio’, Solar Cycle 25 is proving to be quite the motivator for radio hobbyists to reach for their radios.

If you want to know where and how to tune-in, Gayle Van Horn’s (W4GVH) Amazon bestselling Global Radio Guide (now in its 20th edition for the Summer of 2023) as it has all the details to make sure you miss none of the action.

Larry Van Horn (N5FPW) helps break down exactly what the increased solar activity means for radio listeners on the high frequency (HF) shortwave bands.  Think there are no shortwave broadcasters left to hear?  Think that military and other utility communications have dried up on HF?  Larry points you to the right spots on the band that prove otherwise.

As one of the only remaining publications available with international broadcast frequencies and schedules, the Global Radio Guide (GRG) puts everything a radio enthusiast needs to navigate the action right in their hands.

With the help of the GRG, you can take advantage of enhanced propagation to tune in shortwave broadcast stations from worldwide hotspots such as China, Cuba, India, Iran, North/South Korea, and many other counties. If you have a shortwave radio receiver, SDR or Internet connection, pair it with this unique radio resource to know when and where to listen to the world.

This newest edition of the GRG carries on the tradition of those before it with an in-depth, 24-hour station/frequency guide with schedules for selected AM band, longwave, and shortwave radio stations. This unique resource is the only radio publication that lists by-hour schedules that include all language services, frequencies, and world target areas for over 500 stations worldwide.

The GRG includes listings of DX radio programs and Internet website addresses for many of the stations in the book. There are also entries for time and frequency stations as well as some of the more “intriguing” transmissions one can find on the shortwave radio bands.

In addition to the global hotspots, the GRG brings the world to you from other places on the radio dial.

The action isn’t limited to just HF though.  From the top down, solar cycle 25 has radio signals bouncing all over the ionosphere.

In fact, you can even tune in to the ionosphere itself as solar energy interacts and bends our magnetosphere through the wonders of very low frequency “natural radio.”  Learn about sferics, tweeks, whistlers and the magical dawn’s chorus and how you can listen in with your own ears!

A little further up the band, mediumwave frequencies are alive with signals from the tropics.  With each dip of the auroral field closer to the equator, mediumwave signals from the tropic region become enhanced.  Loyd Van Horn (W4LVH) discusses what to look for and busts propagation myths for the mediumwave and FM broadcast bands.

With enhanced propagation on HF, there is an increased diversity of signals to hear from various countries.  To help, Fred Waterer brings a primer on the when and where of languages one can tune into on the shortwave bands.

Whether you monitor shortwave radio broadcasts, mediumwave, amateur radio operators, or aeronautical, maritime, government, or military communications in the HF radio spectrum, this book has the information you need to help you to hear it all. Teak Publishing’s Global Radio Guide “brings the world to you.”

You can find this edition of the Global Radio Guide, along with all our titles currently available for purchase, on the Teak Publishing Web site at www.teakpublishing.com.

The 20th edition of the Global Radio Guide e-Book (electronic book only, no print edition available) is available worldwide from Amazon and their various international websites at

https://amzn.to/41ndGaT

The price for this latest edition is US$8.99. Since this book is being released internationally, Amazon customers in the United Kingdom, Germany, France Spain, Italy, Japan, India, Canada, Brazil, Mexico and Australia can order this e-Book from Amazon websites directly servicing these countries. Customers in all other countries can use the regular Amazon.com website to purchase this e-Book.

You can read any Kindle e-Book with Amazon’s ‘free’ reading apps on literally any electronic media platform. You do not have to own a Kindle reader from Amazon to read this e-book. There are Kindle apps available for iOS, Android, Mac and PC platforms. You can find additional details on these apps by checking out this link to the Amazon website at: https://amzn.to/42lvxR9

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Spitfire AM/Mediumwave Transmitter on sale via eBay

Many thanks to SWLing Post contributor, Ron, who notes that the Spitfire AM transmitter is on sale (GBP 71.95 or approx. $91 US) via the manufacturer’s eBay store for the next three days. Ron notes:

Tony has solved the hum problem that plagues AM part 15 transmitters.
This model comes ready to go, just hook it up. It meets all Part 15 requirements.
Enjoy listening to the 1940’s radio station (for example) on your own AM station.
Comes set up for 1600 kHz but Tony will tune it to whatever you
want or you can adjust the dip switch yourself.
Has a built in stereo to mono converter and full sound range audio.
Hurry, the Sale ends soon.

Click here to check out the Spitfire AM transmitter on eBay.

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