Category Archives: Radio History

Radio Waves: FCC Comments on Shortwave Trading, QTC eBook, Golden Years, and SDRconnect Demo

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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 Ron Chester, Benn Kobb, Chuck Rippel, Pietschman, Dennis Dura, and Dave Zantow for the following tips:

“Market Makers” Want to Expand Their Use of Shortwave (Radio World)

The FCC seeks comments on a proposal to use HF spectrum for financial data

The FCC is taking public comment on a proposal to revise the rules governing the frequencies above 2 MHz and below 25 MHz.

The Shortwave Modernization Coalition thinks the 2-25 MHz band is underused and wants to use it for the long-distance transmission of time-sensitive data from fixed stations. The users would be companies working with certain kinds of financial transactions; the proposal would prohibit voice transmission and mobile operations.

The firms in the coalition are “market makers and liquidity providers” for exchange-traded financial instruments.

This high-frequency trading industry has in fact been using shortwave links for several years to send trading data between U.S. and foreign exchanges, but it has done so under experimental authorizations. [Continue reading…]

QTC: I Have a Message for You (Archive.org)

Many thanks to Bill Pietschman who notes that the book “QTC: I Have a Message for You” has now been published on Archive.org for all to read and download free of charge. Bill writes:

I knew Ray Redwood, and besides being a Professional radio operator, he was indeed a Ham’s Ham. You will find here not just the story of radio, but a detailed analysis of the Titanic, from a radioman’s point of view. Part documentary, part autobiography, and part technical, it’s a great read. I’m so glad that his work has been preserved here. Future radio historians will, I am certain, find it to be a valuable record of the Ship Radio Officers Era, and Ray’s insights at the dawning of the Global Maritime Distress and Safety System as we have today which utilizes satellite technology.

Click here to check out QTC: I Have a Message for You on Archive.org.

The Golden Years of Shortwave Listening (YouTube)

There was a time, some 50 years ago when cell phones didn’t exist and computers were only owned by large corporations, that people learned of the world around them by listening to shortwave radio. This is a journey back to that time to hear the sounds and see the correspondence from shortwave stations from all over the world. Sit back, listen and enjoy!

SDRplay and SDRconnect – The Update! – Dayton Hamvention (YouTube)

Steve Brightman (KI5ENW) from SDRplay demonstrates the new updates to SDRconnect to Ham Radio Outlet’s Julian Frost (N3JF).

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Radio Waves: Hamvention Attendance Record, WWII Codebook, TuneIn for AM Stations, and 101 Years of Chicago Radio

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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, Ron Chester, and Ulis Fleming for the following tips:

Hamvention 2023 breaks attendance record (WHIO)

XENIA — A new attendance record was set at Hamvention this year.

This year 33,861 people flooded to the Greene County Fairground and Expo Center for the world’s biggest amateur radio show, according to a spokesperson for Hamvention.

The number surpassed the previous record by more than 1,300 people. It’s also more than 2,000 greater than last year’s attendance.

This year’s Hamvention ran May 19-21 and brought in people from across the globe.

“Things went very smoothly due to the dedication and hard work of close to 700 volunteers,” Jim Storms, Hamvention General Manager, said.

Hamvention 2024 is scheduled for May 17-19. [Watch report on WHIO…]

Man’s WW2 codebook unearths St Erth’s ‘best-kept secret’ (BBC)

A retired schoolteacher is shedding light on an “ultra secret” World War Two listening station in Cornwall.

Mike Griffiths unearthed the secret existence of the MI6 outstation in St Erth when his late father, Harry Griffiths, left him his code book.

He has revealed the role his father and others played in providing intelligence for code-breakers at Bletchley Park.

Mr Griffiths said he “couldn’t be prouder” of what his father achieved. Continue reading →

Radio Waves: State of AM Radio, Quindar Tones Hack, AI DJs, BBC Pop-Up Station for Sudan, Artemis II & Ham Radio, and a Morse Revival

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Source: NASA

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, David Shannon, and Eric McFadden for the following tips:

Bouvard Laments “Yawning Gap” in Marketer Perceptions About Radio (Radio World)

Cumulus publishes analysis to counter prevailing sentiments about AM and radio in general

“Ford owners are massive users of AM radio.”

So writes Pierre Bouvard, chief insights office of Cumulus Media, citing data from MRI Simmons.

That is but one of his observations as Cumulus Media/Westwood One released an analysis of listening data from sources that also include the Nielsen fall 2022 survey, Edison Research’s “Share of Ear” and research by Advertiser Perceptions.

Bouvard regularly posts about the power of radio and what he calls misperceptions about the medium among the broader marketing community.

He summarized takeaways from the new Cumulus analysis:

“The Nielsen Fall 2022 survey reveals that 82,346,800 Americans listen to AM radio monthly; 57% of the AM radio audience listens to news/talk stations, the very outlets that Americans turn to in times of crisis and breaking local news; and one out of three American AM/FM radio listeners are reached monthly by AM radio,” he wrote. [Continue reading…]

AM News Radio, your go-to in a crisis, could itself be in trouble (NorthJersey.com)

“Some clouds over the city right now. I’m Paul Murnane,” says a familiar voice.

“I’m Wayne Cabot,” says another.

Few would know their faces. But as names, they’re as recognizable as anyone in New York.

Fewer still could tell you their address — an 11th floor studio in a light-brick high-rise in lower Manhattan, between a Chase bank branch and patisserie named Maman.

But hundreds of thousands know where to find them on the AM dial — right between 820 WNYC (“public affairs”) and 930 WPAT (“multi-ethnic”). That, for 56 years, has been the location of WCBS Newsradio 880 — one of those rare unchanging institutions in a changeable city. [Continue reading…]

Apollo Comms Part 27: Quindar Tones Microphone Hack (CuriousMarc on YouTube)

The last DJ nears? Radio station uses artificial intelligence, cloned voices (WRAL)

GENEVA — The voices sound like well-known personalities, the music features trendy dance beats and hip-hop syncopations, and the jokes and laughter are contagious. But listeners of an offbeat Swiss public radio station repeatedly got the message on Thursday: Today’s programming is brought to you by Artificial Intelligence.

Three months in the making, the French-language station Couleur 3 (Color 3) is touting a one-day experiment using cloned voices of five real, human presenters — in what managers claim is a world first — and never-aired-before music composed almost entirely by computers, not people. From 6 a.m. to 7 p.m., the station said, AI controlled its airwaves. Every 20 minutes, listeners got a reminder. Continue reading →

Radio Waves: Gen Tojo’s Teeth, City Radio Review, Wearable CW Trainer, Sister Boniface, and “We Are Broadcasters” Oppose Tax

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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 and Harry Dence for the following tips:

Gen Tojo’s Teeth: Morse Code Shows Up In The Strangest Places (Hackaday)

The Baader-Meinhof effect is the common name for what scientists call frequency illusion. Suppose you are watching Star Trek’s Christopher Pike explain how he makes pasta mama, and you’ve never heard of it before. Immediately after that, you’ll hear about pasta mama repeatedly. You’ll see it on menus. Someone at work will talk about having it at Hugo’s. Here’s the thing. Pasta mama was there all along (and, by the way, delicious). You just started noticing it. We sometimes wonder if that’s the deal with Morse code. Once you know it, it seems to show up everywhere.

One of the strangest places we’ve ever heard of Morse code appearing is the infamous case of Tojo’s teeth. If you don’t remember, General Hideki Tojo was one of the main “bad guys” in the Pacific part of World War II. In particular, he is thought to have approved the attack on Pearl Harbor, which started the American involvement in the war globally. Turns out, Tojo would be inextricably tied to Morse code, but he probably didn’t realize it. [Continue reading at Hackaday…]

the CityRadio – Hear the world (TechMoan on YouTube)

A ‘radio’ that lets you listen in to broadcasts from cities around the world…but there’s a catch.

M5STICKC Turned Wearable Morse Code Trainer (Hackaday)

Have you ever felt the options for Morse code communication were too limited? Well, look no further than [marsPRE]’s open source WristMorse communicator that can connect over WiFi, can act as a Bluetooth keyboard or just be used as a Morse Code trainer.

[marsPRE] uses the M5StickC Plus as the base device and attaches a custom “hat” consisting of a 2.5 mm plug for a radio connection and two capacitive touch paddles that act as the Morse Code keyer. The add-on is housed in what looks like a custom 3D print and hangs off of the end of the M5StickC Plus, connecting the hat through an eight 0.1 inch pin header. [Continue reading at Hackaday…]

Sister Boniface episode “Dead Air” is a pirate radio-themed

Many thanks to SWLing Post contributor, Harry Dence, who writes:

Do you watch BritBox? Hope so!

Today they released Season 2, Episode 8 of the Sister Boniface mysteries, called “Dead Air.”

Set in England of the Radio Caroline era, the episode concerns a pirate radio station called Radio Catherine, a bit of humor along with the mystery, and an homage to Radio Caroline in its ending. Also a sight gag that will please Spinal Tap fans and reference to the GPO controlling the airwaves.

Thank you for the tip, Harry! 

WeAreBroadcasters: “Encourage Congress to support local radio!”

Note: this is a petition managed by WeAreBroadcasters in opposition to a proposed tax:

Encourage Congress to support local radio!

Legislation that would force local radio stations to pay new fees simply for playing music has been introduced in Congress. The American Music Fairness Act (AMFA) would put stations out of business and impact their ability to provide the news, traffic, weather, emergency information and entertainment you rely on every day. The Local Radio Freedom Act opposes new performance fees on local radio stations and recognizes radio’s vital role in every community. Please take action today and encourage your members of Congress to oppose the AMFA and cosponsor the Local Radio Freedom Act. Your voice matters!

Click here to sign.

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Your support makes articles like this one possible. Thank you!

Radio Waves: New Buzzer, Remembering Virginia Norwood, More AM in Cars, and Portland Church Pirate

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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, Frank Howell, NT, and Dan Finegan for the following tips:

Russia’s New Mystery Shortwave Station (Hackaday)

The Buzzer, also known as UVB-76 or UZB-76, has been a constant companion to anyone with a shortwave radio tuned to 4625 kHz. However, [Ringway Manchester] notes that there is now a second buzzer operating near in frequency to the original. Of course, like all mysterious stations, people try to track their origin. [Ringway] shows some older sites for the Buzzer and the current speculation on the current transmitter locations.

Of course, the real question is why? The buzzing isn’t quite nonstop. There are occasional voice messages. There are also jamming attempts, including one, apparently, by Pac Man.

Some people think the new buzzer is an image, but it doesn’t seem to be the same signal. The theory is that the buzzing is just to keep the frequency clear in case it is needed. However, we wonder if it isn’t something else. Compressed data would sound like noise.  Other theories are that the buzzing studies the ionosphere or that it is part of a doomsday system that would launch nuclear missiles. Given that the signal has broken down numerous times, this doesn’t seem likely. [Continue reading…]

Remembering Virginia Norwood, the ‘mother’ of NASA’s Landsat program (Engadget)

The pioneering inventor died on March 27th at the age of 96.

If you haven’t heard of Virginia Norwood, it’s about time you did. An aerospace pioneer whose career would have been historic even without its undercurrent of triumph over misogynistic discrimination, she invented the Landsat satellite program that monitors the Earth’s surface today. Norwood passed away on March 27th at the age of 96, as reported by NASA and The New York Times.

She achieved all this despite significant pushback from the male-dominated industry before and after her rise. Despite her obvious talent, numerous employers declined to hire her after graduating from the Massachusetts Institute of Technology. For example, Sikorsky Aircraft told her they would never pay her requested salary, equivalent to the lowest rank in the civil service. Another food lab she applied for asked her to promise not to get pregnant as a condition of her employment. (She withdrew her application.) Finally, the gun manufacturer Remington appreciated her “brilliant” ideas in an interview but told her they were hiring a man instead. [Continue reading…]

Can The Industry And Congress Keep AM Radio In The Dashboard? (Inside Radio)

Facing an existential moment in the 100-year history of the medium, AM broadcasters are banding together, calling on allies in Congress, and enlisting listener support to preserve their place in the automobile. The heads of 10 state broadcasting associations have formed a Dashboard Subcommittee within the National Alliance of State Broadcasters Associations (NASBA) to slow or stop the removal of AM radio from the dashboard. The two-week old group is working on multiple fronts including fact finding, education and advocacy.

Continue reading →

Comparing the Watkins-Johnson WJ-8711 & WJ-8712 with TEN-TEC RX-340 & RX-331 receivers

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Many thanks to SWLing Post contributor, Paolo Viappiani, who shares the following guest post:

The WJ-8711 & WJ-8712 vs. Ten-Tec RX-340 & RX-331 Receivers

by Paolo Viappiani, Carrara, Italy

In recent years, a renewed interest has grown in regards to the best HF receivers using “first generation” DSPs, typically the HF-1000/HF-1000A, WJ-8711/WJ-8711A and WJ-8712 models by Watkins-Johnson and the RX-340 and RX-331 models by Ten-Tec. Even today, the aforementioned receivers are considered among the best performers of all times; this is a well-deserved fame in the case of the W-Js, a bit less with regard to the units manufactured by Ten-Tec, a firm that once had a good reputation but that has been recently acquired by a new owner (who sold the old facilities by transferring the company and distorting the sales, support and assistance policies of the previous company [2]). I therefore believe that this article serves as a dutiful information for the readers who are potentially interested in these receivers.

A Bit of History

In the years between the last and the present century, two receivers very similar to each other in terms of design and structure were released almost simultaneously by Watkins-Johnson of Gaithersburg, Maryland [1] and by Ten-Tec of Sevierville, Tennessee [2]: the WJ-8711 (later upgraded to the A and A-3 versions and followed for a short period by the HF1000 and the  HF1000A  “civilian” versions [3]) and the Ten-Tec RX-340; both of them are shown in Figure 1.

Figure 1: The WJ-8711A (above) and Ten-Tec RX-340 (below). Notice the similarity of the front panels of the two radios.

The WJ-8712/WJ-8712A and the Ten-Tec RX-331 receivers were released by their respective manufacturers in that period also (the latter one was preceded by the RX-320 and RX-330 models). All these types were nothing more than “black-box” units, that in all respects corresponded to the WJ-8711A and to the Ten-Tec RX-340 receivers but that had not been provided with true front panels, as they were controlled by special hardware interfaces or from a PC, look at Figures 2 and 3.

Looking at the appearance of the WJ-8711/HF1000 receiver series and of the Ten-Tec RX-340 units, a relative similarity to each other is evident, and it has led to various speculations regarding the design of both devices.

One of the theories was revealed by James (Jim) C. Garland W8ZR of Santa Fe, New Mexico [4], about which he claims to have obtained information from a Ten-Tec employee directly. James claims that in 1991 the US Government Agency NSA (National Security Agency), which used to purchase numerous HF receivers for surveillance and interception, decided that the current cost of the receivers were too high and formed a special group in order to study how to obtain a possible price reduction.

At that time the high-end HF receiver market was dominated by a few manufacturers: Watkins-Johnson, Racal, Cubic, Rockwell-Collins and a few others, and Ten-Tec applied for joining the group.

Figure 2: The WJ-8712A (above) and Ten-Tec RX-331 (below). While the Watkins-Johnson model is two rack units high and half wide, the Ten-Tec develops less in height (only one rack unit) and more in width (standard 19” rack). However, both receivers are quite deep (more than 20”-50 cm.).

Figure 3: The Tmate unit of the WoodBoxRadio is shown here; it is one of the possible accessories which, together with a PC monitor, allow using the “black-box” receivers via an RS-232 interface.

According to the information provided by Jim Garland, the Watkins-Johnson and the Ten-Tec designers worked together for about one year in order to agree on the technical characteristics and guidelines of the “radio of the future” which must meet all the requirements that the NSA requested.

Continue reading →

Radio Waves: Vacuum Tube Revival, KMJ Documentary, 2023 Domestic Broadcasting Survey, and Radio in Zimbabwe

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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 Ulis Fleming, Dennis Dura, and Tracy Wood for the following tips:

One Man’s Quest to Revive the Great American Vacuum Tube (Wired)

The prized retro audio components are mostly manufactured in Russia and China. Now, a small Georgia company is rebooting US production.

ROSSVILLE, GEORGIA, ON the border with Tennessee, doesn’t look like a tech town. It’s the kind of place where homey restaurants promising succulent fried chicken and sweet tea are tucked among shuttered businesses and prosperous liquor stores. The cost of living is moderate, crime is high, politics are red, and the population has withered to 3,980.

But in the view of entrepreneur Charles Whitener, Rossville is the perfect place to stage a revival in US technology and manufacturing—albeit with a device that was cutting edge when the Ford Model A ruled the roads.

Whitener owns Western Electric, the last US manufacturer of vacuum tubes, those glass and metal bulbs that controlled current in electric circuits before the advent of the transistor made them largely obsolete. Tubes are still prized for high-end hi-fi equipment and by music gear companies such as Fender for their distinctive sound. But most of the world’s supply comes from manufacturers in Russia and China, which after the transistor era began in earnest in the 1960s helped sunset the US vacuum tube industry by driving down prices.

Whitener, a 69-year-old self-described inventor, vintage hi-fi collector, and Led Zeppelin fanatic, bought and revived AT&T’s shuttered vacuum tube business in 1995. The business has ticked along in the era of cheap overseas tubes primarily by serving the small market for vacuum tubes in premium hi-fi equipment with a model called the 300B, originally designed in 1938 to enable transoceanic phone calls. [Continue reading…]

KMJ | 100 Years in the Valley (Valley PBS on YouTube)

100 years is an incredible milestone for any business or organization! In this Valley PBS Original Documentary, we take you back in time as we explore the origins of KMJ as a conservative talk radio station as well as the long-lasting legacy and impact of their century-long run on the air and in the hearts & minds of their listeners.

Click here to view on YouTube.

2023 Edition of The Domestic Broadcasting Survey

Many thanks to SWLing Post contributor, Dennis Dura, who notes that the 2023 Edition of The Domestic Broadcasting Surve is available for download at:

http://www.dswci.org/dbs/

Many rely on radio broadcasts in Zimbabwe and across Africa (Northwest Arkansas Democrat Gazette via AP)

Many still rely on radio broadcasts for news, entertainment across continent

HARARE, Zimbabwe — Just the size of his hand, the radio set hung in the busy marketplace stall is essential to Mark Nyabanda.

“I can’t do without it,” said the 25-year old, taking a break from selling fertilizer in Mbare market in the capital, Harare, to listen to a radio weather report warning of possible floods.

Radio bulletins also provide him with information on disease outbreaks, political news and entertainment, he said.

“I don’t trust these new technologies,” he said, referring to social media. “They are full of falsehoods. We saw it during the coronavirus outbreak.”

In many Western countries, conventional radio has been overtaken by streaming, podcasts and on-demand content accessed via smartphones and computers.

But in many of Africa’s 54 countries, with a combined population of 1.3 billion people, traditional radio sets are widely used, highlighting the digital divide between rich countries and those still struggling to have reliable internet.

Radio sets are all over the place in Zimbabwe. Rural livestock herders dangle them from their necks while tending animals while those in the cities listen to their radio sets for news. [Continue reading…]

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