Category Archives: Radio History

VOA Bethany: Remembering the day the transmitters were shut down

Many thanks to SWLing Post contributor, David Iurescia (LW4DAF), who shares the following article:

Historic radio station in West Chester remembers final broadcast anniversary (Fox 19)

“Everything got shut off. This place had never been shut off in 50 years.”

WEST CHESTER, Ohio (WXIX) – The Bethany Relay Station at the Voice of America Park is remembering the day its mission of transmitting broadcasts ended.

The historic station was built in West Chester by radio pioneer and Cincinnati native Powel Crosley Jr.

The station and its shortwave broadcasts served as countermeasures to propaganda spreading across Europe during World War II, allowing people from all over the world to receive crucial information about wartime happenings.

On Nov. 14, 1994, the mission of transmitting broadcasts worldwide from the Bethany Relay Station came to an end. […]

Click here to read the full article and watch the video.

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Special broadcast from Nauen on Sunday, September 8, 2024

Many thanks to SWLing Post contributor, Gérard Koopal, who writes:

The oldest still existing station in the world “Nauen” in Germany will have a special broadcast on September 8 for the open memorial day from 10.00 till 16.00 central European summertime or 08.00 till 14.00 UTC for 100 years broadcast radio in Germany. See text below. Note that the broadcast will take place from 11.00-13.00 UTC. With thanks to Thomas Schweder who made it public.

English Translation

The oldest radio station in the world still in existence invites you to the Open Monument Day 2024

On Sunday, September 8th, 2024, from 10:00 a.m. to 4:00 p.m.
At Graf-Arco-Strasse 154 in 14641 Nauen

In the year of the 100th anniversary of broadcasting in Germany, we are offering a two-hour live radio event directly on site, especially for shortwave radio fans on site and at receivers across Europe, to watch, listen to and participate in.

The program will be produced live from 1 p.m. to 3 p.m. CEST (11.00-13.00 UTC) in the control room of the Nauen station and broadcast on 6045 kHz.

This unique special broadcast on the occasion of the 100th anniversary of broadcasting in Germany is presented by Media Broadcast GmbH and carried out by Radio60!.

Original Announcement in German:

Die älteste noch bestehende Funkstelle der Welt lädt ein: zum Tag des
offenen Denkmals 2024

Am Sonntag, den 08.September 2024, von 10:00 bis 16:00 Uhr
In der Graf-Arco-Strasse 154 in 14641 Nauen

Im Jahr des 100. Geburtstages des Rundfunks in Deutschland bieten wir
für speziell für die Kurzwellen-Radio-Fans vor Ort und an den Empfängern
in ganz Europa ein zweistündiges Live-Radio-Event direkt vor Ort zum
Zuschauen, Anhören und Mitmachen an.
Das Programm wird von 13 – 15 Uhr MESZ im Raum der Leitwarte der Station
Nauen live produziert und auf 6045 kHz abgestrahlt.

Diese einmalige Sondersendung anläßlich des 100.Jubiläums des Rundfunks
in Deutschland wird präsentiert von der Media Broadcast GmbH und
durchgeführt von Radio60!.

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1976 Japanese TV commercial for the National Cougar 2200

1976 Japanese TV commercial for the National Cougar 2200 (aka Panasonic RF-2200 aka National Panasonic DR-22)

by 13dka

(The commercial starts at the 1:00 mark. It’s part of longer video with Japanese commercials from that year, there is a whole collection on YouTube if you like those!)

Doing some research on other old technical gems from Japan I stumbled upon this 1976 National/Panasonic TV commercial running on the domestic TV networks back then. While watching, I smiled and thought “only in Japan…” …it would’ve been perfectly normal to advertise something like a shortwave receiver in this fun (and funny) way. Anyway, I think RF/DR/Cougar 2200 owners and collectors (also the resident one on this blog , the blog owner) may want to have this link in their bookmarks!

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The Radio Phonics Laboratory

Fastradioburst23 here to let you know about a brand new book from Imaginary Stations contributor Justin Patrick Moore. The Radio Phonics Laboratory: Telecommunications, Speech Synthesis, and the Birth of Electronic Music is a radiocentric look at the origins of electronica. Radioheads will find much to enjoy in the pages of this tome including:

  • Elisha Gray’s Musical Telegraph, arguably the world’s first synthesizer that used telegraph wires to send music down the line to distant listeners.
  • Lee De Forest’s Audion Piano. Radio pioneer Lee De Forest used his invention of the triode vacuum tube, or audion, to make an electronic musical instrument, perhaps his least contentious invention!
  • The radio work and espionage activities of Leon Theremin, who worked as an engineer at a distant station deep within the Soviet Union where he discovered the principles to make his famous antenna-based instrument.
  • The avant-garde antics of the Lost Generation composer George Antheil and his collaboration with actress Hedy Lamarr that led to the development of the spread spectrum suite of transmission techniques that now permeate our everyday life wherever there is WiFi.

But that’s not all! At the heart of this narrative is the evolution of speech synthesis. Spanning the groundbreaking work of Homer Dudley at Bell Laboratories with his work on the voder and vocoder to the dual discovery of Linear Predictive Coding from the research done by Fumitada Itakura at Nippon Telegraph and Telephone in Japan to the parallel discoveries in the same field made by Manfred Schroeder and Bishnu S. Atal at Bell Labs. Linear Predictive Coding gets put to work whenever someone picks up a cell phone to make a call, or when they get on their DMR radio to join a net with their fellow ham radio friends across the world. Linear Predictive Coding was later put to work in the compositions of early computer music pioneer Paul Lansky at Princeton.

Tracing the early use of the vocoder in enciphered radio transmissions between Churchill and Roosevelt in World War II to its use by Robert Moog and Wendy Carlos, this is the story of how investigations into the nature of speech generated a tool to be used by the music makers who merged their voices with the voice of the machine.

But wait, there’s more! The creative use of these phonic frequencies really took hold when radio stations and radio companies spearheaded the creation of the first electronic music studios. These laboratories include:

  • Halim El-Dabh’s use of wire recorders loaned from Radio Cairo to create the first pieces of what was later called musique concrète, where raw sounds were manipulated to create a new kind of music.
  • Pierre Schaeffer’s creation of the Groupe de Recherches Musicales (GRM) under the auspices of the Radiodiffusion Nationale station in France, leading to the subsequent spread of musique concrète.
  • The genesis of the Studio for Electronic Music of the West German Radio (Westdeutscher Rundfunk) born out of early developments in elektrische music made by the countries experimental instrument builders.
  • The subsequent building of an electronic music studio at NHK in Japan.
  • The story behind the “sound-houses” of the legendary BBC Radiophonic Workshop, and its pioneers Daphne Oram and Delia Derbyshire.
  • The development of the Columbia-Princeton Electronic Music studio made in conjunction with the RCA company and the building of their gargantuan instrument, The RCA Mark II Synthesizer.
  • And further explorations in the work being done at Bell Labs where the computers made music under the guidance of Max Matthews leading to creative breakthroughs from composers Don Slepian and Laurie Spiegel.

Of particular interest in this realm to the radio buff is the work of John Chowning, a composer who worked out the principles of FM synthesis, essentially figuring out how to do frequency modulation in the audio domain. He went on to create the Center for Computer Research in Music and Acoustics at Stanford, which became a model for the kind of sound laboratory later implemented in France at IRCAM, Institute for Research and Coordination in Acoustics/Music.

This the story of how electronic music came to be, told through the lens of the telecommunications scientists and composers who transformed the dits and dahs of Morse code into the bleeps and blips that have captured the imagination of musicians and dedicated listeners around the world.

The Radio Phonics Laboratory is available directly from Velocity Press here in the UK and Europe. North American readers can find it on Bookshop.org here , Amazon.com here and fine bookstores everywhere.

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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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Radio Waves: Switzerland to End Analog Radio, AM For Every Vehicle Act, AM v Safety, and Electromechanical Radio Transmitters

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 Paul and Dennis Dura for the following tips:


Switzerland to end 2024 with an analog FM broadcast-killing bang (The Register)

Time to upgrade that receiver if you’re one of the few Swiss that still don’t have one able to receive DAB+ signals

Swiss radio listeners will soon have to toss out their old sets, as the country plans to end analog FM broadcasting on December 31, 2024, in favor of a total conversion to digital.

The move has been a long time coming in Switzerland, which has largely already transitioned to Digital Audio Broadcasting (DAB+, an evolution of standard DAB that was designed to address early issues). More than 99 percent of the country have access to a DAB+-compatible receiver and fewer than 10 percent of radio signals in the country still being broadcasted in analog FM, according to the Swiss Broadcasting Corporation. [Continue reading…]

AM Radio for Every Vehicle Act to Receive Minor Technical Update (Radio World)

There will be no substantive changes to the legislation

A bill in the House of Representatives that would mandate AM capability in new vehicles is about to be revised, according to a person familiar with the developments.

New information indicates that one of the original co-sponsors of the bill, Rep. Frank Pallone (D-N.J.), plans to introduce an amendment to the bill (H.R. 8449). Changes would only include minor technical updates.

The planned amendment to the AM Radio for Every Vehicle Act comes on the heels of last week’s last-minute cancellation of a planned vote by the House Energy and Commerce Committee, which could have advanced the legislation to the full House for a vote. [Continue reading…]

Would AM Mandate Force Carmakers to Scrap Safety Features?

Opponents play up the possibility that carmakers would have to choose

If Congress requires AM radio in new cars, vehicle manufacturers might have to drop safety features instead.

That’s the message from opponents of the proposed law in Congress. A guest commentary published by Automotive News restates the key points that opponents have been making since the legislation was introduced; but their blunt emphasis on a possible tradeoff with important safety features seems notable.

“To accommodate analog AM radio as a primary design requirement, certain carmakers may need to scrap advanced safety features, with engineers having to prioritize outdated technology over current or future safety innovations,” they wrote. [Continue reading…]

Did you know that 100 years ago there were electromechanical radio transmitters?

Many thanks to Paul who shared a link to this Mastodon thread discussing the technology behind the SAQ/Grimeton broadcast station: https://mastodon.social/@tubetime/110970146022678448

Here’s is a video (we’ve posted in the past) that gives even more detail about the design and operation:


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