Category Archives: Radio History

Shortwave Memories — Who’s Out There?

by Karl D. Forth

I can remember very early in my shortwave listening wondering how many people were tuned in to a particular broadcast at the same time I was. I was listening to Radio Portugal on a warm evening in June 1971 when I first had this thought. How many others in North America were listening to Radio Portugal, the Voice of The West, and their evening English service at 9 p.m. CDT in the summer of 1971?

The BBC, Radio Canada International, and Radio Nederland probably had a decent audience. And Radio Moscow and Radio Havana Cuba always drew some curious listeners.

What about a smaller broadcaster with an English transmission to North America? How many were listening to any international shortwave broadcaster?

How many were watching Gunsmoke or Rowan & Martin’s Laugh-In compared to a feature on Portuguese oilseed production and chestnut exports?

There was no Arbitron ratings book as there was for AM and FM stations in the United States, but it’s fun to think about having a listening diary for shortwave stations, sent not to ARB’s headquarters in Beltsville, Maryland, but somewhere like Geneva, Switzerland, for tabulation.

The stations themselves didn’t know either, but they made audience estimates based on listener mail. Some stations that you may have listened to only a few times and wrote to get a QSL continued to send schedules for years after, counting you as a regular listener. When seeking funding, the stations pointed out that they sent schedules to 5,000 listeners, for example, every few months. (I’m looking at you, RAI.)

I’ve also read stories of shortwave schedules still coming to the house of parents of the listener many years after the listener moved away and started a separate life. (He or she probably picked up the schedules when they visited Mom and Dad, I figure.) Today, I’m still asking the same questions about how many are listening. The stations remaining on shortwave are, too. I’ve read some of the estimates for a major broadcaster’s over-the-air and digital audience that seem extremely optimistic.

Karl D. Forth has been interested in radio and DXing for more than 50 years. This story was included in the book Radio Nights and Distant Signals.

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90 Years of Radio Prague: Founded to Fight Nazi Propaganda

Many thanks to SWLing Post contributor David Iurescia for sharing the first installment of a fascinating look at how Radio Prague became a powerful weapon against Nazi propaganda in the years leading up to World War II.

You can read the full article here, and/or listen to the Radio Prague Episode below:

Shortwave Memories — Castro Calling

RHC Radio Havana Cuba QSL Cardby Karl D. Forth

On mediumwave, Cuba was a heavyweight, with many high-powered transmitters all over the dial, exceeding the already generous allocation agreed to by the North American nations in 1941.

In 1971, Radio Havana Cuba broadcast on shortwave with Spanish to the Americas, English, French, Portuguese, and a few other languages.

Later, I saw a magazine ad from the 1960s. The ad was for Hallicrafters, a Chicago maker of shortwave radios and communications equipment. The ad showed a menacing-looking caricature of the Cuban dictator speaking and posed the question:

“Have you ever actually heard this son of a bitch?”

Fidel Castro’s understanding of radio was no accident. He studied its use in other Latin American countries and in previous coup attempts, and used it shrewdly in his own rise to power.

One program seemed to a 15-year-old to cross the line. The Voice of Vietnam was an English language program aimed at the United States that was broadcast from Havana, not Hanoi. This program seemed strident and objectionable, which may have been the goal.

Today, Cuban broadcasting is in a shambles. Hurricane Rafael flattened its largest shortwave transmitter site. Ongoing problems with the power grid and shortages of fuel have led to nationwide power outages. Many AM stations are off the air. Technicians from China who kept things running have reportedly left the country.

Karl D. Forth has been interested in radio and DXing for more than 50 years. This story was included in the book Radio Nights and Distant Signals.

Please note: all Amazon links are affiliate links that support the SWLing Post at no cost to you.

A New Media Tech Museum Opens in Kansas City

Many thanks to SWLing Post contributor, David Iurescia, who shares the following news item about a new museum dedicated to the history of media and communications technology. Located in Kansas City’s Crossroads Arts District, the Media Tech Museum features more than 900 artifacts tracing the evolution of communication—from telegraphy and early radio to television, film, and digital media.

Click here to read and watch via KCTV.

BBC Radio 4 explores shortwave broadcasting and soft power

Today, BBC Radio 4 will air The Sound of Soft Power, a documentary presented by Josephine McDermott exploring the history of international broadcasting and the role shortwave radio played as a tool of soft power during the Second World War and Cold War.

The program features a number of familiar voices from shortwave history, including Lord Haw-Haw, Mildred Gillars, Doris Maxina of Moscow Mailbag, and June Taylor.

The documentary also revisits stations and programs remembered fondly by many DXers, including Radio Netherlands’ Happy Station Show and Radio Berlin International.

I was pleased to play a small role in assisting with research for the program, and recordings from the Shortwave Radio Audio Archive were also used in the production.

For anyone interested in the history of shortwave broadcasting and international radio, this will be well worth a listen.

The Sound of Soft Power airs today on BBC Radio 4 and will also be available via BBC Sounds.

BBC Looks Back at the First Shortwave Transatlantic Link

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)

Many thanks to SWLing Post contributor Markku (VA3MK), for sharing this BBC article marking the centenary of the world’s first shortwave transatlantic telecommunication link between Canada and Somerset, England. Among other things, this article also highlights the historic Marconi Beam Wireless Station at Bridgwater and the challenges of early shortwave radio experimentation. Read the full article here: BBC:  Pioneering’ message that changed the world

From Compactrons to Nuvistors: Vacuum Tubes’ Last Hurrah

Many thanks to SWLing Post contributor Dennis Dura, who shares this article from Hackaday that explores the fascinating “last gasp” innovations of vacuum tube technology long after transistors had already begun taking over the electronics industry. The article dives into late-era tube developments like compactrons, lighthouse tubes, and RCA’s remarkable nuvistor—tiny, rugged, low-noise tubes that pushed thermionic technology to its limits in applications ranging from military gear to high-end audio and RF equipment. It’s a terrific read.

Click here to read: The Vacuum Tube’s Last Stand(s)