Category Archives: Radio History

Radio Waves: Remembering CBS Radio, Taking Back the Airwaves, Women-Led Radio Stations, Russian Great Firewall, and WLRH Audience Crisis

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, NT, and Mark Pascoe for the following tips:

Remembering CBS Radio’s Beginnings (Radio World)

The recent news that CBS is shuttering its radio network caused us to reflect on the glorious 99-year history of the company’s radio business, and gaze backward from this stretch of the road toward the media organization’s beginnings.

In the 1920s, Arthur L. Judson was a well-known manager of musical artists. After a meeting with RCA chief David Sarnoff, he thought he had a verbal agreement to provide musical talent for the new National Broadcasting Company, but he soon discovered that Sarnoff had instead set up his own NBC artist’s bureau. Furious over the humiliation of being outmaneuvered, Judson resolved to start his own radio network, to be called the United Independent Broadcasters.

He lined up a few investors, rented studio space at WOR in New York and signed up 16 stations. The network would pay the stations for carrying its programs, plus the talent costs and the hefty AT&T network line charges. All expenses would be paid for by advertising. The Columbia Phonograph Company agreed to provide an infusion of cash, and it became the Columbia Phonograph Broadcasting System. [Continue reading….]

After CBS: Let’s Take Back the Airwaves (Radio World)

It’s a wakeup call. Our future should belong to Main Street not Wall Street

The announcement of the pending shutdown of CBS News Radio isn’t just another media headline — it’s a wake-up call.

A clear example of what happens when decisions about our information, our communities and our voices are made in corporate boardrooms disconnected from real life.

This wasn’t a programming failure. It wasn’t a lack of audience. It was an accounting decision — made by people who don’t live in the communities radio serves, don’t rely on it and don’t understand its true value.

And that’s exactly why they got it wrong.

Radio has never been more important. In an era flooded with misinformation, algorithm-driven content and faceless digital noise, radio remains immediate, local and — most importantly — trusted. It’s the one medium that still shows up live, every day, in real time, for real people. [Continue reading…]

Empowering Airwaves: Women-Led Radio Stations Amplify Unheard Voices (Nieman Reports)

On March 8, 2021, a new radio station launched in Kabul: Radio Begum, run by women, for women. The timing was deliberate — the station opened on International Women’s Day, and just as the United States military was withdrawing from Afghanistan.

“I decided to launch this radio station in order to be ready for the day the Taliban takes power,” said Hamida Aman, the station’s founder. “We knew that as soon as they take power, it will be segregation, and again, it will be against women.”

Five months later, the Taliban retook Kabul and imposed new laws restricting women’s access to schools and their movements in public. Five years later, Radio Begum is still on the air. The station follows the letter of the law, even as restrictions tighten. It doesn’t cover politics or any subjects that are off-limits to public discussion among women under Taliban edicts. Instead, it focuses on health, religion, and providing educational programs to replace the schooling women are now prohibited from receiving.

“They banned schools, but not education,” Aman said. [Continue reading…]

Does a ‘Great Firewall’ loom? Why Russians are buying up walkie-talkies and road maps (SBS News)

Pagers, walkie-talkies and portable radios have reportedly been flying off the shelves of Moscow after the city’s roughly 13 million residents were hit with week-long internet disruptions, which some believe could be part of the Kremlin’s trial of a nationwide internet censorship system.

The blackout, which was first reported on 5 March, occurred initially in some of out suburbs in the capital, Moscow, before later spreading through the city’s downtown areas.

During the disruption, many foreign websites were blocked on mobile phones, while online government services, top banks and taxi apps also stopped working.

Russian media outlet Kommersant estimated that a five-day shutdown cost the city’s businesses between $54 million and $89 million. [Continue reading…]

An Audience Crisis at WLRH (Michael Krall – Blog)

The latest audience numbers from WLRH reflect a new reality — the audience that once listened for NPR programming is gone.

The station posted a 1.3 share for January 2026 (Nov-Dec-Jan).

This is a real loss caused directly by the format change.

Because WLRH dropped all NPR programming on October 1, 2025, this book represents the first full three months of the new format. (See my previous post for a more detailed explanation on how the Huntsville radio market is measured.) [Continue reading…]

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The Genesis of Carlos Latuff’s Illustrated Radio Listening Reports

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

The first time I thought about illustrating news I listened to on the radio, I was a kid, in the kitchen of my aunt’s apartment, I think in the 80s. From her Philco Transglobe receiver, I was informed that a sea lion had appeared on Copacabana beach, or something like that. I imagined what it would be like to draw that unusual event. But it remained just an idea; I never got around to drawing it.

The 20th century passed, and in 2019, I decided to rescue that childhood idea from the past. I made my first illustrated radio logbook:

This minilog would be the embryo of what I now call an “Illustrated Radio Listening Report.” A way to record, in illustration form, historical moments listened on the radio.

I hope to leave to those who come after me, research material, both on History and on radio. With this in mind, I’m making available here on SWLing Post this PDF with some of my illustrated reports of news captured by radio in 2025, related to climate change, a crucial theme of our times. This is my legacy as an artist AND radio enthusiast. Enjoy! ?

Celebrating 90 Years of Radio Bulgaria’s English Voice

Radio Bulgaria Marks Its 90th Anniversary with a New QSL Card Series

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Many thanks to SWLing Post contributor Paul Jamet, who shares the following update and QSL card images related to Bulgarian National Radio (BNR) and Radio Bulgaria.

As Radio Bulgaria looks ahead to its 90th anniversary in 2026, Bulgarian National Radio has announced a new commemorative QSL card series for listeners who submit reception reports. The series will include 12 different QSL cards, each highlighting a key moment from the history of BNR and the Radio Bulgaria service. According to BNR, a new card will be released each month, along with a short publication explaining the historical background behind the featured image.

One of the cards commemorates Bulgaria’s first radio transmission in 1929, an important milestone that marked the beginning of organized radio broadcasting in the country. Additional background articles from BNR revisit the early days of Radio Bulgaria and trace how the service evolved into an international broadcaster with listeners around the world.

Paul also points to a broader retrospective titled “BNR at 90 – A Story of Pride and No Prejudice,” which looks back on nine decades of Bulgarian National Radio. The piece reflects on BNR’s history through periods of political change and technological transition, while underscoring the role of public broadcasting in preserving culture and maintaining a connection with international audiences.

Attached at the top and bottom of this post are two QSL cards from Paul’s own collection.

Many thanks again to Paul for sharing both the news and the QSL images!

The Remarkable Life of Dr. Leslie Radnay, W1PL

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Many thanks to SWLing Post contributor Dan Greenall, who writes:

I know many of your readers are amateur radio operators and have a passion for all things radio. A couple of years ago, I was sorting through some of my old ham QSL’s and this one from W1PL caught my eye. A quick internet check confirmed he was indeed a silent key, however, I also uncovered his incredible story which I thought I would share here. Truly a remarkable individual.

Dr. Leslie (Laci) Radnay, W1PL

Dr. Leslie (Laci) Radnay, W1PL (1912-2008), is a story of how perseverance, determination, and the love of radio got him through the most challenging of circumstances imaginable, time and time again. In fact, it is truly the stuff that Hollywood movies are made of.

In spite of all of this, he was never too busy to help others. Certainly someone to look up to and admire for what he was able to accomplish, and I feel privileged to have had even just a brief contest-style QSO with him. He was instrumental in helping to start the Hungarian Radio Amateur Association and got on the air with a self-assigned callsign in 1928.

Click on this PDF file link to read his incredible story.

Attached are images of a number of QSL cards he issued over the years.

Thank you, Dan, for sharing.

Reading through Laci Radnay’s life story, I’m struck not only by the sheer scale of what he endured, but by how completely radio remained a constant thread throughout it all. Time and again, regimes changed, borders closed, equipment was confiscated, and lives were upended—yet radio, and the community surrounding it, always found a way back into his life.

W1PL’s story is a powerful reminder that amateur radio is far more than a technical pursuit; it is a human one. It builds resilience, forges lifelong friendships across borders, and, in Laci’s case, provided continuity, purpose, and connection through some of the darkest chapters of the 20th century.

I’m deeply grateful to Dan for sharing this remarkable story, and honored to help preserve the memory of an operator whose life so beautifully embodied the very best of our radio community. -Thomas

Cold War DX and Tactical Callsigns

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by Dan Greenall

During the Cold War years, many different signals could be found on shortwave that cannot be heard today. For example, there were two Germanys, several broadcasters from the USSR not including Radio Moscow, Radio Free Europe and others.

I have uploaded audio clips of these stations and others to the InternetArchive.

Here are a few of the links.

https://archive.org/details/rbi-berlin-gdr-1970
https://archive.org/details/radio-rodina
https://archive.org/details/radio-free-europe-1971

If you were adventurous like me, willing to tune outside of the regular assigned broadcast bands, and flip the BFO switch “on”, stations with odd sounding names like Giant Step, Sky King, Fanfare or Ivanhoe could sometimes be heard. These were typically tactical calls used by the U.S. military.

I recently dusted off an old 3-ring binder to look up what were some of the tactical callsigns that I was able to log from my southern Ontario listening post. They included Missionary, Toreador, Democrat, Retail, and Capsule.

My old recordings of stations “Pawnee” and “Fanfare” can be found on the Internet Archive here:

https://archive.org/details/u.-s.-navcomsta-aok-rota-spain-pawnee

Pawnee:

Fanfare:

Information about these stations was hard to find, however, radio hobby magazines and SW club monthly bulletins were a good place to look. I have reprinted (below) some related material from Communications World magazine, which ran from 1971 to 1981.

If you would like to browse through all of their publications, follow this link:

https://www.worldradiohistory.com/Communications_World.htm

CW Fall-Winter 1973 pages 32-3

“The Navy also has its point-to-pointers, including NSS, Washington D.C.; NPM, Pearl Harbor, Hawaii; and NPG, San Francisco. Overseas there are Navy stations in many locations, such as Naples, Italy (NNI), Londonderry, Northern Ireland (NST), Roosevelt Roads, Puerto Rico (NRR), San Miguel, Philippines (NPO), and elsewhere. Some military stations use tactical call names, rather than call letters, which makes the DXer’s hopes of identifying them rather slim. For security reasons these stations identify with names such as Overland, Kingfisher and the like. These call names are changed frequently and seldom is the hobby listener able to figure out just where the station he’s hearing is located. Some of these identifiers have been used so consistently, over the years. that DXers have managed to figure out their real identities. Toreador, for instance, is a name used by Navy Operational Radio, San Francisco; Pacific Radio is at Pearl Harbor; Ivanhoe is the U.S. Naval Communications Station, Norfolk, Virginia; and a whole series of stations using the code name Raspberry (as in Raspberry Jax, located at the Naval Air Station, Jacksonville”

CW Spring-Summer 1975 page 36

“SWLs will soon note that the armed forces don’t always use call letters. Instead, tactical call signs may be used to identify the station. You might, for instance, hear a station calling itself Ivanhoe or Capsule. Looking Glass or Migraine. Some tactical calls are changed frequently, others are used year after year and, as a result, no longer pose identification problems for the utility SWL. “Ivanhoe” is the identifier used by the Navy’s important Norfolk, VA base. Navy installations in Morocco. Iceland and Spain identify as “Fanfare,” “Port Call,” and “Pawnee,” respectively. The U.S. Air Force’s Strategic Air Command (SAC) has for years maintained a regular airborne alert. It is no military secret that at any time, day or night, SAC has jumbo bombers aloft—supposedly loaded with nuclear armaments—in readiness to retaliate should this country ever come under attack from an enemy. Clearly it is essential that these planes keep in continuous contact with ground command stations. Shortwave radio is one of the means employed. This SAC radio network is known as Sky King. Coded communications pass between SAC bases and the jets probably several times each hour. SWLs who stumble on these transmissions will hear, as part of the routine radio traffic, authenticator codes, usually two phonetic letters such as “Alfa-Tango.” The purpose of these codes is to assure plane commanders that the rest of the message is genuine. Various Air Force bases identify themselves in radio communications either by base name, such as “Hickam” (Hawaii’s Hickam Air Force Base), or by tactical calls. “Democrat” is used by March AFB, CA, and “Retail” is the call of Barksdale AFB, LA. SAC also has a flying command post, a back-up measure that supposedly would take command of SAC forces should “a nuclear attack wipe out the headquarters at Offutt AFB, NE. The command post in the sky uses the tactical call “Looking Glass.” Some SAC frequencies to watch are 6,762, 9,027, 11,220, 13,245, 14,744 and 17,875 kHz. There are other Air Force frequencies to watch for plane-to-ground. and vice versa, transmissions. Among them are 6,738, 8,764, 8,988, 9,020, 11,200. 13,201 and 17,993 kHz. “Raspberry” is a network tactical call used by naval air stations. “Raspberry Miramar” is the station at Miramar NAS, CA, and “Raspberry Jax” is Jacksonville, NASFL. You can find naval air communications in the 6.7, 8.7, 8.9, 11.2, 13.2 and 15.0 MHz frequency areas.”

CW (Fall-Winter 1976) pages 19-20

“The list of tactical calls is as long as your arm and most DXers find it very tough to connect a certain call with a particular service or military base. But here is a partial list of calls used by Air Force, Navy and a few Army operations. (Bergstrom AFB, TX), “Condor” (land mobile units), “Raymond 6” (George AFB, CA), “Raymond 24” (Little Rock AFB, 4LR). Pacific Missile Firing Range Network: “Plead Control” (Pt. Mugu, CA), “Outrider Control” (Barking Sands, HI). Strategic Air Command: “Skyking” (general call for airborne aircraft), “Outway” (Offutt AFB, NE), “Retail” (Barksdale AFB, LA), “Democrat” (March AFB, CA). Other Air Force “tacticals”: “Beaver Operations” (Ellsworth AFB, SD), “Letterman” (Hickam AFB, HI), “Hornpipe” (Cannon AFB, NM), Air Force Tactical Air Command: “Mainsail” (general call), “Fireside 1” (Langley AFB, VA), “Fireside 5” “Glucose” (Seymour -Johnson AFB, NC), “Lactose” (Shaw AFB, NC), “Fertile” (Homestead AFB, FL), “Acrobat” (Andrews AFB, MD), “Ringmaster” (NORAD Hq, Cheyenne Mt., CO), “Gull Monitor” (Keesler AFB, MS), “Format” (McGuire AFB, NJ). Navy Atlantic Command: “Ivanhoe” (Norfolk, VA), “Hampshire” (Ft. Allen, Puerto Rico), “Sheriff” (Bermuda) “Phenomenon” (Jacksonville, FL). Navy Pacific Command: “Butterfield” (San Diego, CA), “Dunkirk” (Honolulu) Other Navy “tacticals”: “Climax” (USS Enterprise), “Eagle Cliff” (USS .John F. Kennedy), “Jitterbug” (Balboa, Canal Zone), “Artesia” (Keflavik, Iceland) “Orange Juice” (Guam), “Missionary” (Norfolk, VA), “Top – hand” (Chief of Naval Operations), “T – Bone” (Adak, AK), “Sleepy Hollow” (Cutler, ME). Army “tacticals”: “Agitator” (Ft. Bliss, TX), “Civil Genius” (Ft. Huachuca AZ), “Popeye” (Ft. Bragg, NC), “Avon Studio” (Ohio National Guard), “Contact Tippic” (Indiana National Guard), “Flame Ivory” (Pennsylvania National Guard).”

I wonder if anyone else recalls hearing these? Please comment!

Bob’s Radio Corner: What Is It About Radio Dials?

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– Recollections of Bob Colegrove

In the late ‘60s, I worked as a mechanical assembler at Communications, Electronics Inc. (CEI) in Rockville, Maryland (acquired by Watkins-Johnson Company). We produced military-grade receivers, mainly for the military (whom else?). These covered the spectrum from VLF through microwave. It was the early days of electronic digital readouts. There were no LEDs or LCDs. Instead, some of our models featured the Numeric Indicator eXperimental, or “nixie” tubes. These were glass tubes filled with low-pressure neon/argon gas, featuring stacked wire cathodes shaped like numerals (0-9) and a mesh anode. An analog-to-digital circuit encoded the frequency to illuminate the correct digits.

Below is shown a DRO-50 Digital Readout from the 1968 CEI catalog. It contained 6 nixie tubes for the frequency display, and the unit had an accuracy of ±100 Hz. Interestingly, this frequency display was designed specifically for the Hammarlund SP-600 Receivers (R-274A/FRR (Army), R-274B/FRR (Navy)). I never saw a DRO-50 come across our line and suspect it may not have gone beyond the prototype. About that time, the SP-600s were ending their military service, so there wasn’t much of a market for upgrades. It would still be a few years before I owned an SP-600 of my own, but how would I love to have one fitted with a DRO-50.

What I had instead of nixie tubes were variable capacitors or inductors, which changed the tuned frequency through a kluge of pulleys and strings, all these hidden behind a Raymond-Loewy-designed bezel and operated by the tuning knob.

What was visible on the front of the radio was an irregular representation of frequencies covering the tuning range of the radio, in other words, the dial. As you rotated the tuning knob, you set the whole tuning mechanism in motion. Signals were progressively tuned, processed, and reported through the speaker or headset as you advanced higher or lower.

Somehow the frequencies never quite agreed with the numbers or divisions on the dial. It could be that the circuits inside the radio were out of alignment. Just as likely, the design of the dial was determined using a preproduction prototype which could not possibly account for the tolerances of the components used on the assembly line.

Consider the figure at the beginning of this posting. It is a portion of the dial on a Hallicrafters S-38E – magnified somewhat. The full dial on the E model was big and bright. It extended across the front panel of the radio and presented frequency readout about as well as was possible. Nevertheless, there were real shortcomings.

The figure is not only typical if communication receivers of the time but also living room console radios of an earlier period. Take the 31-meter band as an example. Broadcast stations were bunched roughly between 9400 kHz and 9800 kHz. At 5-kHz channel spacing, this resulted in roughly 80 channels. Of course, not all were in use at any given time, but still a smidgeon turn of the knob could traverse two or three stations.

This situation was relieved somewhat on communication receivers by the addition of a bandspread – a separate tuning mechanism which could effectively magnify a small portion of the main dial. The idea was to place the main tuning dial at the high end of the desired band and the bandspread at 0. Then, by tuning the bandspread toward the other end, lower frequencies could be tuned with greater separation.

Since the bandspread could be used at any place within the tuning range of the radio, a separate dial became a problem, so it was usually annotated with a simple logging scale incremented linearly from 0 to 100. Thus, one had to compile a log-to-frequency conversion table or graph to interpret the frequency. More sophisticated receivers could display the 80- through 10-meter ham bands on the bandspread dials.

As an example, I located some notes made in 1959 using the S-38E. The table shows the frequency, bandspread reading, station and country. Thirty-one meters was an easy match for the bandspread, as WWV on 10000 kHz was a steady marker which you could use to calibrate the bandspread with the main tuning. For all practical purposes, the band was bounded by the Voice of Spain on 9360 kHz and R. Budapest on 9833 kHz. For many years, Tel Aviv was an outlier on 9009 kHz.

Alternately, one could construct a graph as shown below. Unfortunately, most inexpensive radios did not produce linear tuning, so you couldn’t simply draw a straight line between two points on a graph and expect to interpolate the intermediate frequencies with accuracy. Instead, graphs were constructed laboriously by hand adding intermediate points for known frequencies. The figure shows the resulting parabolic function where the slope is greater on higher frequencies and gradually levels off as the bandspread is tuned lower. Notice that most of the activity was mashed between 40 and 60 on the bandspread, then compare this with the picture of the bandspread above.

On the S-38E a bandspread was something of an improvement, but not the complete answer. The problem only got worse as you went higher in frequency. At 19 and 16 meters the band compression became quite severe.

Our esteemed leader, Thomas, occasionally uses a picture of the dial shown below as a lead figure of a posting. It is possibly an RCA Victor Model 110k console radio. When I see this, I think, who wouldn’t give a king’s ransom to own that radio in its fully restored condition? Note the 31-meter band has been magnified as its own separate band and appears in a near linear progression. Thirty-one meters was arguably the center of international shortwave broadcasting in the golden age.

Have you ever wondered what the rest of that radio looks like? Here’s one in sore need of some Pledge. Now imagine yourself, perhaps 11 or 12 years old, perched in front of it on your grandmother’s needlepoint stool tweaking the dial. If you have experienced this, no explanation is necessary. If you haven’t, none is possible.

Source: https://www.liveauctioneers.com/

So, as it turns out, I have tempered my earlier conviction that a digital frequency readout is necessarily better than a classic dial. Not to say you can easily pry the PL-880 with 10-Hz resolution from my cold, stiff hands, but I have come to realize that intrigue and mystery of shortwave listening rested in the uncertainty of knowing exactly what frequency you were on. There was always the possibility that the elusive Nibi Nibi Islands lay somewhere near the shadow cast by the dial pointer. It was a land of enchantment, and once you left its borders, you could never return again.