Category Archives: AM

Celebrating World Radio Day 2022!

Today is UNESCO World Radio Day and this year the theme of trust highlights the importance of radio as an accessible form of information.

Below are some of the many projects celebrating World Radio Day:


Cities and Memory: Shortwave Transmissions

As mentioned in a previous post, we at the Shortwave Radio Audio Archive are truly honored to have been a resource for this incredible and diverse sound project organized by Cities and Memory.

We encourage you to explore the creative work from over 120 artists and composers.

A great many of these remarkable dynamic works draw on a wide array of recordings from the SRAA; the resulting compositions and soundscapes are rich with sonic textures, evocative collages of sound and memory, which emerge into further sources of inspiration.

Our profound thanks to Cities and Memory––and all of the participating artists––for this truly brilliant collection which you can check out on the Shortwave Transmissions project page.


BBC World Service Documentary: “World Wide Waves ’22: The sounds of community radio”

As we mention in a previous post, this brilliant radio documentary focusing on community radio is available on the BBC World Service website and BBC Sounds

Here’s the description:

For World Radio Day 2022, we tune in to radio stations around the world that connect communities, spark conversations, keep traditions alive and give a voice to their listeners. From Aboriginal Koori Radio in Australia to a community station in India run by rural women from the lowest Dalit caste, the airwaves carry intimate wisdom, vital knowledge, beats and tunes that keep reminding us who we are.

Note that this piece was produced by our friend David Goren, of Shortwaveology fame. Continue reading

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Jock explores “The Essential Listening Post Part II – When the lights go out”

Many thanks to SWLing Post contributor, Jock Elliott, who shares the following guest post:


Photo by Parker Coffman on Unsplash

When the lights go out: The Essential Listening Post – Part II

By Jock Elliott, KB2GOM

What’s the most valuable commodity in an emergency? Information.

Without information, it is very difficult to make decisions of what actions you should – or shouldn’t – take. Fortunately, as swling.com readers know, radio can come to your rescue.

As an example, I offer for your approval this minor incident that happened just a few mornings ago.

At 4:30 am, I awoke. That’s not particularly unusual; I get up early lots of mornings to run the Commuter Assistance Network on ham radio.

What made this morning unusual were the things I couldn’t see: the digital clock across the room, the tiny LED lamp that illuminates the way to the bathroom in the middle of the night. They were both dark. In fact, the only light that I could see was the LED from the uninterruptable power supply for the computer in the next room. It was pulsing, indicating the power from the mains was out.

With the help of a flashlight kept within easy reach of the bed, I made my way downstairs. A peek out the windows revealed the surrounding area was dark; no lights in local houses, no street lights. A house across the ravine behind my house had a single light, but it had the bright white look of an emergency lantern. So this outage was wider spread than just the lane where I live. But how widespread was it? In early February in upstate New York, it’s winter; temperature about 6 degrees Fahrenheit on this particular morning. The thermostat on the wall has already dropped below where the furnace should have kicked on. With no electricity; no furnace.

With no house power, I had no internet, so I couldn’t look things up to find out why there was no house power. Because we use Voice Over Internet Protocol (VOIP), with no internet, no house phone.

Now, I know what you’re thinking: “Well, dummy, fire up your smart phone, and in a few moments you’ll have your answers.”

To that I say: “Not so fast there, pardner.

I consulted with a ham radio friend who makes his living in the commercial radio business. He consults with many companies, including cell phone companies, so he knows what he is talking about.

It turns out there are three things that could render your smart phone useless.

The first is whether your local cell tower(s) have battery back-up. Most do, but how many hours the batteries will run the cell tower can vary widely from just a couple of hours to perhaps eight. Depending upon when the power went out, you may or may not be able to connect.

The second is that many cell phone towers themselves connect to the rest of the network through wire or fiber optic cable. If a vehicle has taken down a pole, or a falling tree has taken down a cable, the network may be disrupted.

Finally, if there is high demand for your local cell phone tower, you may not be able to make a connection. My commercial radio “guru” relates that he went to an event at a local community college. There is a cell tower right on the property, but he had great difficulty connecting simply because so many people were trying to use the tower.

During emergencies, cell phone networks frequently go into gridlock because of high demand, so it’s a good idea to have other means of gathering information. An interesting aside: some years ago, I heard a presentation from one of the hospital administrators who was in New Orleans during Hurricane Katrina. They were unable to make voice phone calls, but apparently they could sometimes send and receive text messages.

Getting back to my small lights-out incident, I was in the actual act of firing up a radio to check out what local broadcasters on the AM (medium wave) band had to say, when the lights came on, the furnace started, and internet and phone service were restored. My greatest inconvenience was having to reset a couple of digital clocks.

But it raised a serious question: what should be your essential listening post if the lights go out, the fertilizer hits the ventilation equipment?

First and foremost, a battery-powered radio capable of receiving your local broadcasters. You need to know – or find out – which ones have back-up power so they can keep transmitting. Knowing that will do two things for you: first, tuning in to a station with back-up power will hopefully get you the information you need, and second, if stations that don’t have back-up power are off the air, that will give you an indication of how widespread the power outage is.

Knowing the extent of the blackout can be important. A couple of decades ago, on an August afternoon, my better half and I took our young son to a local park where there was a water fountain that the kids could run through. When we got home later, the power was out. I saw the neighbor standing in her yard and asked if she had reported the outage. “No point,” she said. “Why?” I asked. “Because the lights are out from Canada to Virginia.” Oh.

In addition to knowing which stations are likely to be on the air, it’s also good to know which local stations have news staff that are likely to collect and broadcast information that is needed during an emergency.

Second, if you live in the United States or Canada, you need a weather radio. Every state in the Union has bad weather of one sort or another . . . and some of them can kill you. NOAA weather radio is an excellent source of information. It’s free, and it does a fine job of delivering weather-related info in a concise and useful format.

Third, it would be very useful to have a scanner or ham radio capable of receiving your local 2 meter repeaters. This could be an additional source of useful information in a crisis.

So, are there any radios that I would recommend for “The Essential Listening Post” when the lights go out?

Yes, there are.

The C.Crane CCRadio 2E

First on my list would be the C.Crane CCRadio 2E (or CCRadio3). It receives AM, FM, NOAA Weather Band with Weather Alert and the 2-Meter Ham Band. It will run on house power or, if the lights are out, over 200 hours on batteries. By all accounts, it offers excellent performance on AM and FM, and it is one of the most sensitive NOAA weather radio receivers I have tested. I bought one and can heartily recommend it.

CC Skywave SSB

The CCrane Skywave SSB receives AM, FM, NOAA Weather band plus Alert, Shortwave (1711-29.999MHz) with SSB, VHF Aviation Band. It doesn’t receive the 2 meter ham band, but it will receive hams on HF frequencies, which might come in handy in an emergency. It is not quite as sensitive as the CCrane 2E on NOAA weather frequencies, but, as I reported last year it was the most sensitive NOAA weather radio receiver I took to Sodus, NY. It is very small and portable and will run for over 50 hours on batteries. I bought one and can heartily recommend it.

The Eton FRX3+

The Eton FRX3+ is an interesting alternative for a “when the lights go out” radio. This battery-powered radio receives AM, FM, and NOAA weather radio with alert. It has a couple of LED lights for navigating in the dark and can be charged by a built-in solar panel, hand-crank, or USB cable, and can even be used to charge your cell phone. Eton Corp. sent me one of these, and I find that it offers worthy performance on AM and FM, and excellent sensitivity on NOAA weather radio. Recommended.

In the future, I hope to offer some additional useful information about NOAA weather radio as well as a comparison of different ways to receive NOAA weather radio, including dedicated weather radio, consumer radio, scanner, and ham handi-talkie.

-Jock Elliott

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Radio Waves: Mazdas Stuck On KUOW, Golden Age of Radio, Russian SW Broadcasts to Arctic, FCC Cleans Up Rules, and Starlink Loses 40 Satellites to Geo Storm

Radio Waves:  Stories Making Waves in the World of Radio

Because I keep my ear to the waves, as well as receive many tips from others who do the same, I find myself privy to radio-related stories that might interest SWLing Post readers.  To that end: Welcome to the SWLing Post’s Radio Waves, a collection of links to interesting stories making waves in the world of radio. Enjoy!

Much thanks to the many contributors who shared the following items:


You’re listening to KUOW … like it or not: Mysterious glitch has Mazda drivers stuck on public radio (Geekwire)

Drivers of certain vehicles in Seattle and other parts of Western Washington are shouting at their car radios this week. Not because of any particular song or news item that’s being broadcast, but because an apparent technical glitch has caused the radios to be stuck on public radio station KUOW.

The impacted drivers appear to all be owners of Mazda vehicles from between 2014 and 2017. In some cases the in-car infotainment systems have stopped working altogether, derailing the ability to listen to the radio at all or use Bluetooth phone connections, GPS, the rear camera and more.

According to Mazda drivers who spoke with GeekWire, and others in a Reddit thread discussing the dilemma, everyone who has had an issue was listening to KUOW 94.9 in recent weeks when the car systems went haywire.

KUOW sounded unsure of a possible cause; at least one dealership service department blamed 5G; and Mazda told GeekWire in an official. [Continue reading…]

The real reason the 1930s were considered ‘the golden age of radio’ (The Grunge)

While it’s been widely contested who actually invented the first radio (both Italian physicist Gugliemo Marconi and Serbian-American inventor and engineer Nikola Tesla were fighting for the first patent, per PBS), it was Marconi who came out top in 1904, when the U.S. Patent Office officially dubbed him the inventor of the new breakthrough technology. According to APM Reports, in 1920, Americans had their first commercially licensed radio station in Pittsburgh, Pennsylvania: KDKA. That number quickly rose after KDKA broadcast the election that saw Warren G. Harding become the 29th president, and by 1924, 500 stations were available for listening.

By 1930, over “40% of American households owned a radio,” per APM Reports. This became known as “The Golden Age of Radio.” As revealed by PBS, in 1930, 12 million Americans owned radios — growing to a whopping 28 million by the end of the decade.

Access to the radio came at a turbulent time in history. As the Great Depression caused widespread suffering for millions of Americans (via History), the households that could afford a radio saw it as a welcome source of entertainment and news that made them feel connected to the rest of the country. These days, with over 15,445 radio stations available in the U.S., it’s clear the radio still remains relevant, but its impact on society truly began nine decades ago. Let’s take a look at the real reason the 1930s were considered “The Golden Age of Radio.” [Continue reading…]

Russia initiates cross-border radio broadcast in North’s languages (Russian News Agency – TASS)

ST. PETERSBURG, February 7. /TASS/. The International Consortium for the Preservation of Arctic Cultural Heritage, based at the Russian State Hydrometeorology University (RSHU), initiated a cross-border radio broadcast in languages of the North’s indigenous peoples, the university’s representative in Moscow Andrei Bryksenkov told TASS.

An application for the broadcast has been filed with the Arctic Council. “The application must be filed from two countries, and we plan to go along with Norway – with the Sami Radio, which is a part of Norway’s big television and radio concern. <…> The idea has been supported at all levels. As for the cross-border broadcast, we, probably, will begin from the shortwave broadcast, as it covers bigger territories and is less costly,” he said.

At the initial stage, the pilot broadcast will be organized on the territories of Finland, Norway and Russia. The project’s initiators are ready to cooperate with other countries. “One transmitter in Krasnoyarsk may cover 80% of the Russian North. Norway has such a transmitter, which covers the Scandinavian territory. Another two transmitters are on Alaska,” he continued. Later on, the broadcast will be also on middle and long waves, thus one frequency will carry 3-4 channels, he added. One of them will be in Russian and English, and the rest – in languages of the indigenous peoples.

The audience will learn about traditions, skills of the peoples living in the North. The content will fully focus on culture. The countries, participating in the project, will open newsrooms. “We hope the general center, which will coordinate the project, will be at the Arctic Council,” he said.

The International Consortium for the Preservation of Arctic Cultural Heritage includes St. Petersburg’s committee on the Arctic, the Arctic museum and exhibition center in St. Petersburg, the Association of indigenous low-numbered peoples of the North, Siberia and Far East, and others. [Read full article…]

FCC Is ‘Cleaning Up’ Of More Radio Rules. Here Is What Will (And Will Not) Change. (Inside Radio)

The modernization of radio’s regulatory rulebook that began under the prior administration continues at the Federal Communications Commission. It is slated to approve a half dozen changes at the Commission’s February meeting, in what Chair Jessica Rosenworcel says is a “cleaning up” of the broadcast radio rules.

“The Commission’s current rules for full-power and translator radio stations contain a number of provisions that are redundant, outdated, or in conflict with other rules,” said Rosenworcel. She said the proposal would “update and clean up” those provisions “in order to reduce any potential confusion, alleviate unnecessary burdens, and make sure our rules reflect the latest technical requirements.”

The proposed order (MB Docket No. 21-263) would update six rules, while scrap plans to change another. They include –

Eliminate Transmitter Power Limit Rule For AMs.

The draft order says the FCC has tentatively concluded the rule is “outdated and unnecessary” given its current reliance on actual operating antenna input power as the most accurate and effective means of ensuring that AM stations adhere to their authorized power limits. The FCC also agreed with comments filed by the National Association of Broadcasters that said the elimination of the technical restriction will allow AMs of any class to use transmitters of any rated power. That, it says, will benefit all AMs by broadening the market of transmitters, enhancing the secondary market for AM transmitters, and reducing the number of transmitters that need to be disposed of.

Clarify AM Fill-in Area Definition

The FCC is poised to amend the definition of an “AM fill-in area” used when an FM translator simulcasts an AM station. [Continue reading…]

Geomagnetic storm and recently deployed Starlink satellites (SpaceX Blog)

On Thursday, February 3 at 1:13 p.m. EST, Falcon 9 launched 49 Starlink satellites to low Earth orbit from Launch Complex 39A (LC-39A) at Kennedy Space Center in Florida. Falcon 9’s second stage deployed the satellites into their intended orbit, with a perigee of approximately 210 kilometers above Earth, and each satellite achieved controlled flight.

SpaceX deploys its satellites into these lower orbits so that in the very rare case any satellite does not pass initial system checkouts it will quickly be deorbited by atmospheric drag. While the low deployment altitude requires more capable satellites at a considerable cost to us, it’s the right thing to do to maintain a sustainable space environment.

Unfortunately, the satellites deployed on Thursday were significantly impacted by a geomagnetic storm on Friday. These storms cause the atmosphere to warm and atmospheric density at our low deployment altitudes to increase. In fact, onboard GPS suggests the escalation speed and severity of the storm caused atmospheric drag to increase up to 50 percent higher than during previous launches. The Starlink team commanded the satellites into a safe-mode where they would fly edge-on (like a sheet of paper) to minimize drag—to effectively “take cover from the storm”—and continued to work closely with the Space Force’s 18th Space Control Squadron and LeoLabs to provide updates on the satellites based on ground radars.

Preliminary analysis show the increased drag at the low altitudes prevented the satellites from leaving safe-mode to begin orbit raising maneuvers, and up to 40 of the satellites will reenter or already have reentered the Earth’s atmosphere. The deorbiting satellites pose zero collision risk with other satellites and by design demise upon atmospheric reentry—meaning no orbital debris is created and no satellite parts hit the ground. This unique situation demonstrates the great lengths the Starlink team has gone to ensure the system is on the leading edge of on-orbit debris mitigation. [Read at SpaceX…]


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Guest Post: Control of Electromagnetic Radiation (CONELRAD)

Many thanks to SWLing Post contributor, Bob Colegrove, who shares the following guest post:


Control of Electromagnetic Radiation (CONELRAD)

As recalled by Bob Colegrove

In his comment on my recent posting, Tinkering with History, Mario noted the dial on the featured radio, the General Electric P755A, sported two small triangles, one between 6 and 7, and the other between 11 and 14.  He noted that these were civil defense markers intended to show the frequencies of 640 kHz and 1240 kHz, respectively, and that these were characteristic of AM radios produce in the US roughly between 1953 and 1963.  Since two full generations have been born and raised to adulthood since that time, and I can’t find any related posting here, I thought it might be useful to bring this subject to light.

In spite of otherwise economic prosperity and general wellbeing, these years were nevertheless filled with anxiety about the prospects of all-out war.  Children of the time (myself included) were being shown how to hide under their school desks, and some of their parents were going so far as to construct air-raid shelters in their basements, and stock them with enough provisions to supposedly outlast any catastrophe.  So it was that CONELRAD came into being in 1951.  The idea was, that in case of a National emergency, all radio and TV stations would go off the air, and only certain medium wave radio stations would stay on either 640 kHz or 1240 kHz.  They would remain on for a few minutes and then other stations would take over in a round robin arrangement – this to deter homing by hostile bombers.  Needless to say, quickly changing over transmitters and antennas to one of these two frequencies did not bode well for the equipment and there were many failures in subsequent tests.  Note that, as originally conceived, the system did not provide for local weather emergencies or other situations.

The banner photo at the top of this posting shows a portion of the Hallicrafters S-38E receiver which conformed to Government law of the time required for marking all AM dials.  An S-38E just like it was my first genuine multi-band radio in 1959.  Assuming good alignment, the dots next to the CD triangles indicated the 640 kHz and 1240 kHz frequencies.  When a test came on, you didn’t have to fish for it, since CONELRAD was the only service transmitting.

Going back to the radios described in Tinkering with History, GE took this one step further.  The figure below shows a portion of the dial on a GE P806A.  Note the nub on the outer edge of the dial under the triangle at 1240 kHz.  There is another nub on the edge at 640 kHz.  Together with the raised triangular dial pointer molded on the cabinet, they provided a braille system, so that someone visually impaired could easily tune to a CONELRAD frequency.

As technology improved, CONELRAD transitioned to the Emergency Broadcast System (EBS) in 1963, and subsequently the Emergency Alert System in 1997.  A more thorough description of CONELRAD can be found on Wikipedia https://en.wikipedia.org/wiki/CONELRAD.  Reprint of an April 1955 Radio & Television News article describing the construction of a transistor CONELRAD receiver is at https://www.rfcafe.com/references/radio-news/conelrad-radio-television-news-april-1955.htm.

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Radio Waves: Russia Shuts Down DW, History of WGY, W2AN/1BCG On The Air, and Summits On The Air

Radio Waves:  Stories Making Waves in the World of Radio

Because I keep my ear to the waves, as well as receive many tips from others who do the same, I find myself privy to radio-related stories that might interest SWLing Post readers.  To that end: Welcome to the SWLing Post’s Radio Waves, a collection of links to interesting stories making waves in the world of radio. Enjoy!


German anger as Russia shuts international broadcaster Deutsche Welle (BBC News)

Germany and the EU have condemned Russia’s decision to shut down the Moscow bureau of international public broadcaster Deutsche Welle (DW).

All DW’s staff have lost their press accreditations and the channel is barred from broadcasting in Russia.

Germany’s culture minister said the move was “not acceptable in any way”.

Russia argued it was retaliating after German regulators decided a new Russian state-run TV channel, RT DE, did not have a suitable licence to operate.

Russian Foreign Ministry spokeswoman Maria Zakharova appeared to offer an olive branch to the German government on Friday, saying that if Germany moved to “normalise the situation”, then Russia would too.

RT has channels in English, French and Spanish and launched its German-language satellite channel in December 2021, using a licence from Serbia, outside the European Union. [Continue reading…]

Exhibit showcases history of radio station WGY (WAMC)

The City of Schenectady, home of General Electric, was once a nursery for broadcasting. One of the nation’s first commercial radio stations began broadcasting 100 years ago. A new exhibit at the Museum of Innovation and Science is celebrating the history of WGY.

WGY was created by GE in 1922 and still operates today under different ownership as a news/talk station. The station’s history is currently on display at miSci in a photo exhibit called WGY: Radio’s Laboratory Celebrates Its Centennial.

Chris Hunter, the museum’s Vice President of Collections and Exhibitions, took me on a tour of the exhibit located in a new gallery inside the museum.

“So, it was about 10th commercial station licensed in 1922. And because it was formed by GE’s publicity department, and not so much the engineers that formed a lot of the other early radio stations, they really placed a premium on entertainment and, kind of, the development of broadcasting.” [Continue reading…]

W2AN/1BCG On-The-Air Again for two-Way QSO’s (AWA)

After a successful AWA on-air sending of the historic 1921 Trans-Atlantic message in December of last year, using the AWA replica of the 1921 transmitter, plans are now in place to do it again only this time to offer two-way QSO’s with all stations wishing to participate.

The QSO party begins on Saturday evening, February 26, at 6:00 p.m. EST, or 23:00 GMT. AWA operators at the museum site in Bloomfield, NY will begin calling CQ on 1.821 MHz, CW, and will listen on or about that frequency for callers. We will work as many folks as we hear in order received and continue to do so until all amateur stations on the planet are in the log or propagation goes away, which ever happens first!

No QSL’s are required for you to receive a nice full sized color certificate confirming your QSO with W2AN/1BCG. Simply send your QSO information via email to [email protected] and the personalized certificate will be sent to the sending email address.

Inside the Summit-Obsessed World of Ham Radio (Outside Magazine)

n a gray Friday afternoon last spring, Steve Galchutt sat high atop Chief Mountain, an 11,700-foot peak along Colorado’s Front Range. An epic panorama of pristine alpine landscape stretched in almost every direction, with Pikes Peak standing off to the south and Mount Evan towering just to the west.

It was an arresting view, and the perfect backdrop for a summit selfie. But instead of reaching for his smartphone, Galchutt was absorbed by another device: a portable transceiver. Sitting on a small patch of rock and snow, his head bent down and cocked to one side, he listened as it sent out a steady stream of staticky beeps: dah-dah-di-dah dah di-di-di-dit. “This is Scotty in Philadelphia,” Galchutt said, translating the Morse code. Then, tapping at two silver paddles attached to the side of the radio, he sent his own message, first with some details about his location, then his call sign, WG0AT.

At this point, a prying hiker could have been forgiven for wondering what, exactly, Galchutt was doing. But his answer—an enthusiastic “amateur radio, of course!”—would likely only have further compounded their confusion. After all, the popular image of an amateur-radio enthusiast is an aging, armchair-bound recluse, not some crampon-clad adventurer. And their natural habitat is usually a basement, or “ham shack,” not a windswept peak in the middle of the Rockies. [Continue reading…]


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Carlos buys a vintage Wahda transistor radio

Many thanks to SWLing Post contributor, Carlos Latuff, who writes:

Hey Thomas, check this radio set I just bought.

Portable, MW only, working with 4 AA batteries. It’s working perfectly.

This piece was made in Japan, I don’t know the year, but the curious thing is the Arabic name on it.

Maybe a model directed to Middle East markets?

Who knows, your readers may come with some information about this model.

All the best,

Carlos Latuff

What a cool little transistor radio! Thanks for sharing the photos, Carlos.

Post Readers: Please comment if you’re familiar with this particular radio model–or the Wahda brand–and have any insight to share with Carlos.

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Guest Post: “Tinkering with History”

Many thanks to SWLing Post contributor, Bob Colegrove, who shares the following guest post:


Tinkering with History

By Bob Colegrove

One of the attractive aspects of radio as a hobby is that it has so many specialties to channel our time.  Just for the sake of classification, I would group these into two categories, listening and tinkering.  I think the meaning of each category is fairly intuitive.  Probably few of us approach our interest in radio in the same way.  Most of us have dabbled in more than one listening or tinkering specialty.  Perhaps we have been drawn to one particular area of interest, or we may have bounced around from one to another over a period of time.  I know the latter has been my case.

Tinkering might start with a simple curiosity about what makes the radio play, or hum, or buzz, and progress to an obsessive, compulsive disorder in making it play, hum or buzz better.  Unfortunately, over the past 30 years or so, the use of proprietary integrated circuits, as well as robotically-installed, surface-mounted components have greatly short-circuited what the average radio tinker can do.  For example, I have noticed a lot more interest in antennas over that period, and I think the reason is simple.  The antenna is one remaining area where a committed tinker can still cobble up a length of wire and supporting structure and draw some satisfaction.  But the complexity and lack of adequate documentation have largely kept newer radio cabinets intact and soldering irons cold.  Bill Halligan knew you were going to tinker with his radios, so he told you how they were put together.  The fun began when you took your radio out of warranty.  If you did get in over your head, there was usually somebody’s cousin not far away who could help you out.  The following is a sample of how one resolute tinker managed to overcome the problem of locked-down radios in the modern age. Continue reading

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