Category Archives: Radio History

Radio Waves: Eiffel Tower Radio 100 Years Ago, Raspberry Pi Radio Time Machine, Barrie ARC Thrives in Pandemic, and The Voice of Ganymede via JUNO

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!

Many thanks to SWLing Post contributors Dan Srebnick, the Southgate ARC and Geneva Witherspoon for the following tips:


Signal of strength: Eiffel Tower celebrates a centenary of radio broadcast (RFI)

A hundred years ago this week, France’s most famous landmark, the Eiffel Tower, was first used as an antenna for radio programmes. Looming high above the city’s uniform skyline, the tower was an obvious choice to pioneer public radio in France, proving the country’s prowess in broadcast technology.

On 22 December 1921, just three years after the end of WWI, “Radio Tour Eiffel” broadcast its first ever show, a live performance featuring legendary singers.

The trial was the beginning of a long series of broadcasts that continues today, with 45 television stations and 32 FM stations – including RFI – broadcasting from the Eiffel Tower.

According to the Lille-based publication Le Réveil du Nord of 24 December 2021, “a concert by wireless telephony took place at the Lille Theatre”.

Famous artists of that era, the legendary Sacha Guitry, the soprano Jeanne Hatto, the tenor Maurice Dutreix and others sang in a microphone in a room in the Eiffel Tower, from where it was broadcast to a “wireless phone set” in the hall of the Lille theatre.

“A large audience attended this session,” according to the dispatch. [Continue reading…]

Nostalgic Raspberry Pi Radio Tunes to Music From Past Decades (Tom’s Hardware)

The Raspberry Pi makes an excellent gift on its own, but getting one in a custom Time Machine Radio is remarkably fulfilling. This holiday, a maker known as Byte-rider created a custom Raspberry Pi Zero 2 W-powered radio for his father. Continue reading

Experimental Station WI2XLQ will recreate 1906 Fessenden transmissions again this Holiday season

Canadian Reginald Aubrey Fessenden in his lab believed circa 1906 (Source: Radio Canada International)

(Source: ARRL News)

Experimental Station will Recreate 1906 Fessenden Transmissions

Experimental station WI2XLQ will be on the air on 486 kHz AM for the Reginald Fessenden commemorative transmission. Brian Justin, WA1ZMS, is the licensee. He will transmit for 24 hours starting at 2000 UTC on December 24, with a repeat transmission starting at 2000 UTC on December 31. Justin will use a homebrew 1921-era MOPA exciter with Heising modulation, followed by a modern 500-W linear. The transmission will be the same as in past years — two violin pieces that Fessenden claims to have played as one of the very first voice transmissions from his Brant Rock, Massachusetts, radio lab site. “While doubt remains that such a transmission ever took place, Fessenden did perform some crude voice transmissions over a few miles distance in early December near Washington, DC, as a demonstration for the US Navy,” Justin said. “So, perhaps some credit is due Fessenden for his efforts to transmit the human voice in an era of spark transmissions.”

If you would like more information about Brian Justin and WI2XLQ, check out our interview with him in 2013. Indeed, I successfully heard the 2013 WG2XFG broadcast and posted this audio clip on the Shortwave Radio Audio Archive.

Radio Waves: Pocket SSB Transceiver, Radio On The Bay Event, New Book on History of Spaceweather, and PSK31 on 437 MHz from the Moon

The uSDX/uSDR QRP transceiver (Chinese version)

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!


Ham Radio SSB Transceiver Fits in Pocket (Hackaday)

Talking about this Chinese ham radio transceiver requires a veritable flurry of acronyms: HF, SSB, QRP, and SDR to start with. [Paul] does a nice job of unboxing the rig and checking it out. The radio is a clone of a German project and provides a low-power radio with a rechargeable battery. You can see his video about the gear below.

SSB is an odd choice for low power operation, although we wonder if you couldn’t feed digital data in using a mode like PSK31 that has good performance at low power. There are several variations of the radio available and they cost generally less than $200 — sometimes quite a bit less.

There isn’t much on the front of the radio. There are a few buttons, a rotary encoder, and an LCD along with a speaker and microphone built-in. There are ports for power to run the radio if you want to not use the battery and a separate port for battery charging. There are also ports for a key, external microphone and speakers, and audio connections that look like they’d work for digital modes. According to commenters, the radio doesn’t have an internal charging circuit, so you have to be careful what you plug into the charging port. [Continue reading…]

(SIDE NOTE: I have been testing one of the USDX / USDR transceivers (a Chinese version–not the open source homebrew project) over at QRPer.com and have been very displeased with performance. So much so, I returned it for a refund. One of the biggest issues being spurious emissions that were produced in harmonics, but also the receiver is one of the worst I’ve ever tested. -Thomas) Continue reading

BBC Newshour and the first shortwave Transatlantic Tests

Former BBC World Service HQ – The Bush House

Many thanks to SWLing Post contributors, Doug and Kris, who both share a link to BBC Newshour which was broadcast yesterday (Dec 12, 2021).

The final segment of the show focuses on the birth of international shortwave radio and the first Transatlantic tests. You can listen to this report over the next month via the BBC Sounds website. This is the final piece in Newshour and starts at the 45:05 mark. Very much worth your time!

Click here to listen to this segment on BBC Sounds (starting at 45:05).

Guest Post: Don targets rare Norwegian stations during Newfoundland DXpedition

Photo by the Bjørnøya Meteorologiske Stasjon

Many thanks to SWLing Post contributor, Don Moore–author of  Following Ghosts in Northern Peru–for the following guest post:


The Rarest DX?

By Don Moore

In mid-October I received an invitation to attend the annual DXpedition in Cappahayden, Newfoundland with Jean Burnell, John Fisher, and Jim Renfrews. It didn’t take long for me to say yes. Newfoundland is one of the best places in the world to DX from and all kinds of amazing stuff has been heard there. I was excited at the prospect of great medium wave DX and being able to log low-powered European private and pirate shortwave broadcasters.

But something else was at the top of my try-for list. One of my many DX interests has always been logging coastal marine stations in the 1600 to 3000 kHz range. In preparation I started checking online sources to update my spreadsheet of schedules. In going through a recently added section on Marine Broadcasts in the DX Info Centre website I came across listings for twice-daily weather broadcasts from Hopen Island on 1750 kHz and Bjørnøya (Bear Island) on 1757 kHz.

I didn’t remember ever seeing anything about broadcasts from these remote islands in the Norwegian Arctic before. Were these stations actually on the air, I wondered. And if they were, could I hear them in Newfoundland? Continue reading

Radio Waves: First Transatlantic Signal 120 Years Today, 100 Years of German Radio, NASA Laser Communications, and Ham Transmitter on the Moon

Marconi watching associates raising the kite (a “Levitor” by B.F.S. Baden-Powell[47]) used to lift the antenna at St. John’s, Newfoundland, December 1901 (via Wikipedia)

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!

Many thanks to SWLing Post contributors Trevor R, Andrea Bornino, Wilbur Forcier, and the Southgate ARC for the following tips:


First radio transmission sent across the Atlantic Ocean (History.com)

Italian physicist and radio pioneer Guglielmo Marconi succeeds in sending the first radio transmission across the Atlantic Ocean, disproving detractors who told him that the curvature of the earth would limit transmission to 200 miles or less. The message–simply the Morse-code signal for the letter “s”–traveled more than 2,000 miles from Poldhu in Cornwall, England, to Newfoundland, Canada.

Born in Bologna, Italy, in 1874 to an Italian father and an Irish mother, Marconi studied physics and became interested in the transmission of radio waves after learning of the experiments of the German physicist Heinrich Hertz. He began his own experiments in Bologna beginning in 1894 and soon succeeded in sending a radio signal over a distance of 1.5 miles. Receiving little encouragement for his experiments in Italy, he went to England in 1896. He formed a wireless telegraph company and soon was sending transmissions from distances farther than 10 miles. In 1899, he succeeded in sending a transmission across the English Channel. That year, he also equipped two U.S. ships to report to New York newspapers on the progress of the America’s Cup yacht race. That successful endeavor aroused widespread interest in Marconi and his wireless company. Continue reading

Radio Preservation Task Force announces partnership with the Shortwave Radio Audio Archive and Radio Spectrum Archive

I’m honored to announce that the Shortwave Radio Audio Archive and the Radio Spectrum Archive are now partners of the Radio Preservation Task Force.

Click here to read the official press release.

To say that I’m enthused would be an understatement:  the Radio Preservation Task Force has, as of today, officially partnered with the Shortwave Radio Audio Archive and Radio Spectrum Archive.   

When I learned that the Library of Congress’s National Recording Preservation Board created the Radio Preservation Task Force (RPTF) in 2014, I became an enthusiastic contributor early on, having started a modest preservation project myself only a few years prior.  Then, a partnership like the one created today would have been one of dreams.

As many of you here know, I’m not only passionate about technologic innovations in our radio space, but also preserving our past.

Shortwave Radio Audio Archive

It was in 2012, in response to a round-table discussion at the Winter SWL Fest, that I created the Shortwave Radio Audio Archive (SRAA). Many of us in the radio community were concerned about the number of original, made-from-home, off-air shortwave radio recordings (airchecks) that we knew were in existence, yet were simply disappearing with the passage of time. We were well aware of members of our community who had either passed away or downsized, and many of their recordings––some of pivotal world events––were being tossed out by well-meaning loved ones or friends who simply didn’t understand their relevance. In addition, many of these recordings were captured on magnetic tape, which becomes brittle with time; we knew these recordings were literally turning to dust.  I felt I had to do something.  The SRAA was that something.

Fortunately for me, the SRAA’s mission has really resonated within our radio community. Today, we have thousands of off-air recordings, all freely available to everyone. The recordings can be downloaded directly from the archive, but many listeners simply subscribe to the SRAA Podcast and receive each recording automatically, as it is published.

Turns out, the archive also attracts the interest of individuals outside of our radio world including historians, musicians, and filmmakers. Indeed, the archive has even been reviewed in The Wire Magazine by a music critic as an audio resource for electronic musicians. At time of posting, the SRAA is the inspiration for artists in the latest Cities and Memory project Shortwave Transmissions.

The archive is not, nor has ever been, monetized; it has no commercial sponsorship, and is completely funded by its contributors. It is free and open to everyone.

I’m exceedingly grateful to our many contributors who continue to unearth absolutely amazing off-air recordings. Our SRAA contributors are true champions of preserving our radio heritage in a space that will long outlast us.  We’ve taken measures to ensure that multiple archivists have full access to the site, so its existence isn’t dependent on any one individual. We also actively seek organizations and educational institutions who can house redundant copies of the Archive.

And still it grows.

Radio Spectrum Archive

Compared with the SRAA, the Radio Spectrum Archive (RSA) is still in its infancy.  But it, too, is growing, and the reason for this steady and growth is the existence of its contributors and other supporters.

Of course, while audio recordings––like those in the SRAA––are relatively small (often between 2 – 120 MB), spectrum recordings are larger by orders of magnitude.

As you might imagine–even in 2021/2022–it is not a simple task to digitally archive and share/move 20GB to 2 TB collections. We are incredibly fortunate in that the Internet Archive supports the RSA and gives us valuable real estate on their servers to preserve and share recordings.

With time, this collection will grow and become a resource for everyone. Our hope is that we may even be able to built a web interface (much like those used by Web SDRs) to play back recordings without having to physically download them.

My wholehearted thanks…

Of course, none of this would have been possible without the many contributors from within our radio community. Thank you all so much for being a part of a movement that archives our amazing, and amazingly diverse, radio history. You have made this possible.

Finally, I’m so grateful to the Radio Preservation Task Force––not just for this empowering partnership and what it means to us today, but for the future potential it represents.  It’s clear that we’ve only just begun.

Thank you––thank you––thank you, all.

Thomas Witherspoon