Category Archives: AM

Radio Waves: AM TX Sites Now Prized Real Estate, New Leaders for RFE/RL, New EU Cars Will Have DAB, and North Korean Fisherman Pays Ultimate Price for Listening to Radio

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 Tracy Wood, Michael Bird, Michael Guerin, Mike Terry and the Southgate ARC for the following tips:


AM Radio Transmitter Sites Now Valuable Real Estate for Logistics Industry (Transport Topics)

The familiar real estate adage “location, location, location” rings true these days for huge tracts on the outskirts of major cities — sites that for decades housed AM radio towers but that today command top dollar as e-commerce fuels rising demand for new warehouses and logistics centers.

Look no further than the $51 million sale of a five-acre parcel in Queens, N.Y., where an AM radio station will eventually abandon its existing tower and transmitter site, and move it.

New York radio station WFME’s owner, Nashville, Tenn.-based Family Radio, sold its AM transmitter site to Prologis, a San Francisco developer that specializes in building warehouses for companies looking to expand final-mile capability.

This property is situated near the Long Island Expressway, the Brooklyn-Queens Expressway, the Queens-Midtown Tunnel, and La Guardia and JFK airports. The spot’s current value as a logistics hub far outstrips its importance to a broadcast outlet that didn’t register in New York’s most recent radio ratings book.

“Long term, we see this as a strategic move that adds to our growing footprint of high-quality logistics space that offers quick and easy access to consumers.” said Jeremiah Kent, Prologis senior vice president of value added investments. “In one of the most densely populated markets in the world where demand for logistics real estate is high and land is scarce, Prologis is well-positioned to respond to the acceleration of e-commerce and consumers’ expectation for same- and next-day delivery services.”

The rising value of these locations is being driven by changing consumer habits and rapid technological evolution. Sites on the edge of town that in radio’s heyday were cheap and plentiful can now house vital links in a supply chain propelled by technology that was hard to imagine back in AM’s early days.[]

USAGM CEO Names New Leaders for RFE/RL, OCB (VOA)

WASHINGTON – The U.S. Agency for Global Media announced that former VOA journalist Ted Lipien will return to run Radio Free Europe/Radio Liberty and Jeffrey Scott Shapiro, the current acting director at the Office of Cuba Broadcasting, will become director.

The appointments follow USAGM CEO Michael Pack’s December 9 announcement that former Voice of America director Robert Reilly would return to lead that network.

Lipien joined VOA in 1973 and worked as the chief of the Polish language service and later as a senior news and marketing executive until 2006. For 10 years, Lipien worked in Munich and Prague as the Eurasia regional marketing director, helping VOA and RFE/RL place programs on stations across the region. In an announcement sent to staff, he recalled listening to Radio Free Europe while growing up in communist Poland.

“I’m honored, and humbled, to be entrusted with helping this storied organization continue to break the hold of censorship and give voice to the silenced,” he wrote.

Since leaving U.S. broadcasting, Lipien has been a vocal critic of VOA’s and USAGM’s previous leaders. He has also defended Pack’s tenure as CEO, saying Pack has focused on correcting long-running issues of bias and mismanagement at the networks.

Radio Free Europe/Radio Liberty is a nonprofit multimedia broadcasting organization funded by U.S. Congress grants. Based in Prague, it serves as a surrogate media source in 27 languages, mostly in places where a free press remains either banned or not fully established.

Jeffrey Scott Shapiro has been with the Office of Cuba Broadcasting since July 2017. In announcing Shapiro’s new position, Pack cited his deep connections to local communities in South Florida and his track record in producing objective news.

“Transmitting objective news and information to the island plays a critical role in moving toward a free Cuba, and it is a privilege to be a part of such an important mission,” Shapiro wrote in a published statement.

The Office of Cuba Broadcasting oversees Radio and Television Marti, based in Miami, Florida. The network provides news, information and analysis to the people of Cuba via satellite television and shortwave radio, as well as flash drives, DVDs and text messages.

Pack was confirmed by the Senate as CEO in June with a three-year term and fired several news executives upon his arrival. He later declined to testify before a House of Representatives panel examining his decisions at the agency, including his decision to fire the heads of RFE/RL, Radio Free Asia and OCB, and replace their boards. The then-director of VOA, Amanda Bennett, resigned two days before Pack joined the agency.

Last month a federal judge granted a preliminary injunction prohibiting Pack and other USAGM officials from interfering with the editorial independence and First Amendment rights of journalists at VOA and other networks they oversee. The ruling still allows Pack to appoint leaders of those news networks to oversee them.

The November 20 court order prohibits the CEO and other defendants from communicating directly with journalists at the networks without the consent of their directors. The order is part of a lawsuit filed by five USAGM officials whom Pack placed on administrative leave in August. The suit accuses Pack and his political appointees of unlawful actions and of violating the First Amendment and a statutory firewall set up to ensure editorial independence. Pack has said the lawsuit is “without merit” and that all of his and his team’s decisions and actions are “correct and lawful.”

Earlier this month, a federal office set up to protect whistleblowers ordered USAGM to investigate allegations of wrongdoing by its own top officials.[]

All new car radios to have digital terrestrial radio (Southgate ARC)

From today, people purchasing new passenger vehicles across Europe will be able to benefit from the advantages of digital radio – greater choice, clearer audio and enhanced data services.

Article 113, Annex XI in the EECC states that “Any car radio receiver integrated in a new vehicle of category M* which is made available on the market for sale or rent in the Union from 21 December 2020 shall comprise a receiver capable of receiving and reproducing at least radio services provided via digital terrestrial radio broadcasting”.

The regulation applies to all EU member states – regardless of the status of DAB in each country.

Despite the impact of Covid-19, Germany, France, the UK, Italy and Denmark have already introduced laws mandating digital terrestrial radio in cars and other countries are expected to follow shortly.

In the first half of 2020, over 50% of new cars sold in Europe included DAB+ as standard – a number that is expected to reach 100% by the end of 2021 as DAB+ adoption continues to grow across Europe.

More information and regular updates on the EECC directive and its implementation across Europe is available on the WorldDAB EECC factsheet.

*Motor vehicles with at least four wheels designed and constructed for the carriage of passengers

https://www.worlddab.org/news

North Korean fisherman publicly executed for listening to foreign radio (The New Daily)

A North Korean fishing boat captain has been publicly executed for listening to banned foreign radio stations while at sea.

The man, only known by his surname Choi and said to have been in his 40s, was killed by firing squad in front of 100 boat captains and fisheries executives, according to a Radio Free Asia report.

Choi, who owned a fleet of more than 50 ships, is thought to have been turned in by a crew member after they turned against him.

According to the RFA report, Choi ultimately confessed to authorities and was charged with “subversion against the party”.

“In mid-October, a captain of a fishing boat from Chongjin was executed by firing squad, on charges of listening to Radio Free Asia regularly over a long period of time,” a North Korean law enforcement official told RFA.

“They publicly shot him at the base in front of 100 other captains and managers of the facility’s fish processing plants. They also dismissed or discharged party officials, the base’s administration and the security officers who allowed Choi to work at sea.”

The network said the fishing boat captain began his habit of tuning into foreign radio stations, including RFA, while serving as a radio operator in the military. He had listened to RFA – a US-government funded network that broadcasts in Korean – for 15 years.

“The security authorities decided then that the time to re-educate him had long past, so they executed him by firing squad,” the source said.

“It seems that the authorities made an example out of Choi to imprint on the residents that listening to outside radio stations means death.”[]


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Yet another “Wacky Wake-Up Crew” recording

After posting recordings of 630 AM WAIZ’s “Wacky Wake-Up Crew” recently, a few readers asked for yet another recording, so here you go!

I made this recording yesterday morning (December, 16, 2020), starting around 5:30 EST with the Icom IC-705 connected to my homebrew NCPL antenna:

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Radio Waves: New SiriusXM Satellite, Tour of CHU, Icom ID-52 Delay, and Grant’s Prototype Broadcast Receiver

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 Mike Terry, Tracy Wood, John Palmer, and Greg Jasionek for the following tips:


SpaceX Launches Latest Satellite For SiriusXM Radio (Spaceflight Insider)

On Sunday December 13, a SpaceX Falcon 9 rocket successfully lifted off from SLC-40 at Cape Canaveral Space Force Station in Florida, carrying the SXM-7 satellite to a geostationary transfer orbit. The flight came two days after SpaceX’s first launch attempt on Friday, which was aborted at t-minus 30 seconds. The company tweeted the reason for the scrub, “Standing down from today’s launch attempt to perform additional ground system checkouts.” While SpaceX did not point to a specific reason for the hold call, it can be assumed that either the onboard computers or ground controllers found something off-nominal in the final seconds before liftoff.

[…]The payload, the SXM-7 satellite, is the latest addition to Sirius XM’s constellation of satellites aimed at delivering an extensive library of music and entertainment to most parts of the world. SXM-7, along with its sister satellite SXM-8 launching in 2021, are aiming to replace the company’s aging XM-3 and XM-4 satellites. Contracted and built by Maxar for Sirius XM, the 7,000 Kilogram satellite is based on the SSL-1300 Bus and utilizes a host of S band transponders to provide satellite radio to customers in North America.

“Maxar and SiriusXM have worked together for more than two decades to build world-class digital audio radio satellites that bring entertainment to almost every new car in America,” said Megan Fitzgerald, Maxar’s Senior Vice President of Space Programs Delivery. “We are proud to have built the latest addition to the SiriusXM constellation and look forward to the launch of their next Maxar-built satellite, SXM-8, next year.”[]

CHU, Canada’s Time Station (Radio World)

Look inside the facility that broadcasts voice time signals in two languages

It is nestled in a farmer’s field in southwestern Ottawa, Canada, in a protected area known as the Greenbelt, surrounded by miles of sprawling suburbia.

It is CHU, Canada’s own automated time station.

Operating from a 1940s-era transmitter building and three vertical antenna towers, CHU broadcasts automated voice time signals in both English and French 24/7.

Its broadcasts are transmitted on 3.33, 7.85 and 14.67 MHz, and are heard through central/eastern Canada and the eastern United States, plus many other areas of the planet on a regular basis.

CHU’s time service is operated by Canada’s National Research Council, with the station being remotely controlled from the NRC’s Montreal Road headquarters central Ottawa some 12 miles away. The time signals are based on CHU’s trio of atomic clocks on-site, which are constantly checked against the atomic clocks at NRC headquarters.

“We are equipped with 1960s-era 10 kW transmitters that have been highly modified over the years,” said Bill Hoger. He is the Research Council officer who maintains the unmanned station as part of his overall duties along with two other off-site technicians.[]

ID-52 Apology and Notice of Production Delay (Icom)

Thank you for your continued patronage of Icom products.

Regarding the 144 / 430MHz dual band 5W digital transceiver “ID-52” released in October 2020, there is a delay in the supply of parts from external partner companies, and additional production is significantly delayed. We sincerely apologize for the inconvenience caused to customers and retailers who are waiting for ID-52.

We will inform you about the timing of resuming production as soon as it is confirmed.

We are doing our utmost to resume production as soon as possible, and we appreciate your understanding.

New Type of Broadcast Receiver (LinkedIn Post)

There has been a lot of testing over last few month, with the new working prototype AM receiver. It has taking almost two years to get to this point with a lot of testing to find out what works and what does not.

The performance on Long wave and Medium wave is outstanding with the external loop configuration, this has many advantages over a ferrite rod antenna design. The Short wave performance is OK, where the front end RF transformers need to be improved with more testing. It out performs my Tecsun PL-398 that uses Digital Signal Processing (DSP), and comes close to what is possible within the high noise floor that you get in buildup areas.

The adaptive processing works very well, where you can set in software to work based on the signal level and if there is a pilot tone been detected (stereo indicator), this works for both the AM bands and for FM. As with the adaptive processing the noise reduction also works with both AM and FM bands, that has been use with Short wave and Long wave stations. The de-emphasis cave is design for 50 ?s, to pass a wider modulation bandwidth through up to 12.5 kHz.

The Denon TU-680NAB has been the reference receiver throughout all the testing to get to this test point. As this was designed for the high end audio market in the 1990’s, to provide the best possible performance for HiFi systems of the day.

[…]This will be marketed as a high end broadcast receiver, the aim is to stay well clear of low cost products from China, that are all too common these days. This is a Canadian product, showing that there are many new ideas and what possible in this area of development. With all these advancement it possible to provide a high quality music programming using AM radio that sounds as good as FM, with the advantages of larger coverage areas.[…]

Click here to read the full post with specifications.


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Radio Waves: More Cuts to Radio Canada International, RCI Action Comments, End of Radio Disney, Changes to German Phonetic Alphabet and Is FM More Efficient than DAB?

View of the western cluster of curtain antennas from the roof of RCI Sackville’s former transmissions building. Photo from June, 2012.

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 Kris Partridge, Gareth Buxton, Dave Zantow, and Paul R for the following tips:


Canada’s public broadcaster announces new cuts to Radio Canada International (Radio Canada International)

Officials at CBC/Radio-Canada announced a fresh round of cuts at Radio Canada International (RCI) on Thursday as part of a “major transformation” of the beleaguered international service of Canada’s public broadcaster.

A joint statement released by Radio-Canada executive vice-president Michel Bissonnette and his CBC counterpart, Barbara Williams, said the goal of the transformation was “to ensure that the service remains a strong and relevant voice in the 21st-century media landscape.”

“In its strategic plan Your Stories, Taken to Heart, the public broadcaster committed to ‘taking Canada to the world’ and ‘reflecting contemporary Canada,’” the joint statement said.

“Transforming RCI is a necessary step to allow the service to effectively fulfil the important role it must play in delivering on those commitments.

“To that end, RCI will soon be offering more content in more languages, drawing on the work of CBC/Radio-Canada’s respected news teams to reach new audiences at home and abroad.”

Earlier in the morning Radio-Canada executives held a virtual meeting with RCI employees to inform them of upcoming changes.

In all, the transformation will reduce the number of RCI employees by more than half, from the current 20 to nine, including five journalists assigned to translate and adapt CBC and Radio-Canada articles, three field reporters, and one chief editor.

As part of the announced transformation, the English and French language services of RCI will be eliminated and will be replaced by curated content created by CBC and Radio-Canada respectively.

The remaining Arabic, Chinese and Spanish services will also be reduced in size.

However, two new language services – Punjabi and Tagalog – will be added to the editorial offering presented by RCI, officials said.

RCI content will also get more visibility by being incorporated into CBCNews.ca and Radio-Canada.ca with its own portal page featuring all the languages, the statement said.

RCI apps will be folded into the CBC News and Radio-Canada Info mobile apps, while the service’s five existing apps will be deleted, the statement added.

Under the new plan, RCI’s operations will focus on three main areas: translating and adapting a curated selection of articles from CBCNews.ca and Radio-Canada.ca sites; producing a new weekly podcast in each RCI language; and producing reports from the field in Chinese, Arabic and Punjabi.

“This transformation will help bring RCI’s high-quality, relevant content to more people around the globe and allow them to discover our country’s rich culture and diversity,” the statement said.

The union representing Radio-Canada employees lambasted the move as a “rampage.”

“It feels like Groundhog Day with more cuts to RCI under the guise of transformation,” said Pierre Toussignant, president of Syndicat des communications de Radio-Canada (SCRC).

In 2012, CBC/Radio-Canada slashed RCI’s budget by nearly 80 per cent, forcing it to abandon shortwave radio broadcasting altogether. The cuts also resulted in significant layoffs and the closure of RCI’s Russian, Ukrainian and Portuguese language services.[]

‘Modernizing’ RCI to death! (RCI Action)

On December 3, 2020, Canada’s national public radio and television broadcaster CBC/Radio-Canada announced “a major transformation” of Radio Canada International (RCI) titled “Modernizing Radio Canada International for the 21st century”. And if you didn’t know anything about the toxic relationship between the two, you would really think this was great news.

After all the budget cuts the national broadcaster has imposed on RCI (for example an 80 % cut in 2012) the news this time is more languages, greater visibility, and an expanded editorial line-up.

Let’s take these “improvements” one at a time.

How has CBC/Radio-Canada decided to give “greater visibility” for RCI’s Internet content? They’re going to bury it in inside the CBC and Radio-Canada websites, and not allow RCI to continue on a site that has existed since 1996.

In this same announcement, CBC/Radio-Canada says it’s adding complete sections in Punjabi and Tagalog to the existing services in English, French, Spanish, Arabic and Chinese. In fact it’s adding one “field” journalist to work in Punjabi, and one in Tagalog – not whole sections.

As far as the Spanish, Arabic and Chinese services which each have three seasoned experienced presenter-producers offering tailored content for their target audiences outside Canada, well, they’re all fired. What will remain is one “journalist” per language, who will be obliged to translate texts given to them in English and French.

And now we come to the sections working in Canada’s official languages of English and French. Again, each of these services has three seasoned experienced presenter-producers offering tailored content for an international audience that needs explanations that the domestic service is not obliged to do. So what will Canada’s Voice to the World be obliged to do in this “major transformation”? Fire all six producers and have an editor at CBC, and one at Radio-Canada, choose some stories, and place it on the “RCI website” which is just a section of the CBC and Radio-Canada websites. Yes, the ones that give RCI “greater visibility”.

The CBC/Radio-Canada announcement speaks glowingly about how RCI has provided a Canadian perspective on world affairs, but then starts skidding into talking about “connecting with newcomers to our country”, “engaging with its target audience, particularly newcomers to Canada”, and making this new content “freely available to interested ethnic community media.” Certainly sounds like CBC/Radio-Canada is intent on servicing ethnic communities in Canada.

But there’s a problem. That’s not RCI’s mandate. And CBC/Radio-Canada has no right to change that mandate. Because Canada’s Broadcasting  Act,  Article 46 (2), makes it a condition of the national public broadcaster’s licence to provide an international service “in accordance with such directions as the Governor in Council may issue.”

And the latest Governor in Council, Order in Council, PC Number:2012-0775, says Radio Canada International must “produce and distribute programming targeted at international audiences to increase awareness of Canada, its values and its social, economic and cultural activities”.

This latest announcement by the CBC/Radio-Canada is, unfortunately, yet another in a string of actions over the last 30 years to eliminate Canada’s Voice to the World.

After failing to shutdown the service in 1990, 1995 and 1996 when pressure from listeners from around the world, and from Canadian Members of Parliament and Senators stopped the closure, the national broadcaster went about dismantling RCI one section after another, one resource after another in a death by a thousand cuts.

This assault on RCI really started in earnest in 1990 when Canada’s Voice to the World was a widely popular and respected international service of 200 employees, broadcasting in 14 languages heard around the world. The 1990 cut removed half the employees, and half the language sections. Over the years, under the guise of streamlining and improving the service, it’s been one cut after another. With this year’s announcement RCI will have a total of nine employees!

Not satisfied with cutting resources, CBC/Radio-Canada has also continually tried to undermine RCI’s international role.

When in 2003 a Canadian parliamentary committee agreed with the RCI Action Committee, in emphasizing RCI’s important international role and suggested more resources should be given to RCI, CBC/Radio-Canada responded by removing two key corporate policies that specifically outlined the necessity for producing programmes for an international audience, again, despite an obligation under the Broadcasting Act.

The reductions in resources, the limiting or decreasing of RCI’s outreach, culminated in 2012 when CBC/Radio-Canada announced it was taking RCI off of shortwave radio broadcasts which had been the main way of communicating to the world since 1945.

This decision deliberately ignored the 2003 Order in Council that specifically obliged CBC as part of its licence to have RCI broadcast on shortwave. Two months after protests by the RCI Action Committee highlighted the illegality of this move, the Canadian Heritage Minister at the time, changed the Order in Council, eliminating shortwave from RCI’s obligations.

This whole sorry tale underlines a key problem facing Radio Canada International:

A domestic national broadcaster is deciding whether or not Canada should have an international voice to the world, and how well it should be funded.

Clearly however, the decision of whether Canada has a Voice to the World and how well it should be funded, should be a decision made by Parliament.

In the meantime, Canadian Heritage Minister Steven Guilbeault should tell CBC/Radio-Canada that it is not allowed to make this latest policy change. Then he should freeze any changes to the service until there is a serious renewal of the Voice of Canada, one that will give it financial and political protection from a toxic relationship with the national broadcaster.[]

Radio Disney, Radio Disney Country to End Operations in Early 2021 (Variety)

Radio Disney and Radio Disney Country are shutting down early next year.

Disney Branded Television president Gary Marsh announced the news Thursday, which impacts 36 part-time and full-time employees. The move comes as Marsh’s division looks to emphasize the production of kids and family content for streaming service Disney Plus and the linear Disney Channels.

Radio Disney first debuted in Nov. 1996 as a terrestrial broadcast network, aimed at kids, who would pick music playlist by calling a toll-free phone request line. The station was key to amplifying a bevy of musical artists, including the Jonas Brothers, Miley Cyrus, Selena Gomez, Demi Lovato, Hilary Duff, Aaron Carter and others.

Radio Disney Country launched in 2015 as a digital platform, expanding two years later with two Los Angeles terrestrial stations.[]

Germany to wipe Nazi traces from phonetic alphabet (BBC News)

Germany is to revamp its phonetic alphabet to remove words added by the Nazis.

Before the Nazi dictatorship some Jewish names were used in the phonetic alphabet – such as “D for David”, “N for Nathan” and “Z for Zacharias”.

But the Nazis replaced these with Dora, North Pole and Zeppelin, and their use has since continued with most Germans unaware of their anti-Semitic origin.

Experts are working on new terms, to be put to the public and adopted in 2022.

The initiative sprang from Michael Blume, in charge of fighting anti-Semitism in the state of Baden-Württemberg, backed by the Central Council of Jews in Germany.

The job of devising new terms for the problematic letters is now in the hands of the German Institute for Standardization (DIN).

The commonly-used equivalent in the UK is the Nato phonetic alphabet, with terms such as “F for Foxtrot, T for Tango”. But many English speakers also use terms like “D for Dennis, S for Sugar” on the phone.[]

Click here for the Newsroom audio via BBC Sounds.

How much energy is used to deliver and listen to radio? (BBC Research and Development)

Is FM radio more energy-efficient than DAB? Do transmitters or audio devices consume the most electricity? What effect will switching off certain radio platforms have on energy use? As part of our work to improve the environmental impact of BBC services, we now have the answers to these questions and more.

Today, we are publishing our research which explores the energy footprint of BBC radio services, both as it stands now and how it may change in the future. This work is the first of its kind in analysing the novel area of radio energy use and forms an extension to the research we released back in September looking at the environmental impact of BBC television.

In our study, we considered the energy use across all available platforms, namely AM, FMDAB, digital television (DTV) and via internet streaming services (such as BBC Sounds), revealing which ones have the largest footprints. We also compared energy use at various stages in the radio chain – not just looking at what the BBC is directly responsible for, such as preparation (playout, encoding and multiplexing) and distribution (transmitters and internet networks), but also in the consumption of our content by audiences. This highlighted the key energy hotspots in the BBC radio system and where best to focus our efforts if we want to reduce our energy footprint.[]


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How to Build a Simple Linear-Loaded Dipole for Low-Noise Shortwave Radio Listening

Many thanks to SWLing Post contributor and RX antenna guru, Grayhat, for another excellent guest post focusing on compact, low-profile urban antennas:


A linear loaded dipole for the SWL

by Grayhat

What follows is the description of an antenna which may allow to obtain good performances even in limited space, the antenna which I’m about to describe is a “linearl loaded dipole”(LLD) which some call the “cobra” antenna due to the “snaking” of its wires
The arms of the antenna are built using 3-conductors wire (which may be flat or round) and the 3 conductors are connected this way:

That is, connected “in series”, this means that, the electrical length of the antenna will be three times its physical one; this does NOT mean that the antenna will perform like a single wire of the same (total) length, yet it allows to “virtually” make it longer, which in turn gives it good performance even with relatively short sizes. Plus, the distributed inductance/capacitance between the wires not only gives it a number of “sub” resonance points, but also helps keeping the noise down (in my experience below the noise you’d expect from a regular dipole).  At the same time it offers better performances than what one may expect from a “coil loaded” dipole. Plus, building it is easy and cheap and the antenna will fit into even (relatively) limited spaces (a balcony, a small yard and so on…).

Interested–? If so, read on and let me start by showing my (short – 9mt total) LLD installed on a balcony:

Here it is in all its “glory”–well, not exactly–I fiddled with it lately since I’m considering some mods so the tape isn’t correctly stuck and it has been raised and lowered quite some times, but in any case that’s it.

Bill of Materials

Here’s what you’ll need to build it (the links are just indicative, you may pick different stuff or buy it locally or elsewhere).

  • Some length of 3-conductors electrical wire which will fit your available space (pick it a bit longer to stay on the safe side), it may be flat or round, in my case I used the round type since it was easily available and cheap: https://amzn.to/3g2eZX3
  • A NooElec V2 9:1 BalUn–or, if you prefer you may try winding your own and trying other ratios. I tested some homebuilt 1:1, 1:4 and 1:6 and found that the tiny and cheap NooElec was the best fitting one): https://amzn.to/3fNnvce
  • A small weatherproof box to host the BalUn: https://amzn.to/33vjZy3
  • A center support which may be bought or built. In the latter case, a piece of PCV pipe with some holes to hold the wires should suffice. In my case I picked this one (can’t find it on amazon.com outside of Italy): https://www.amazon.it/gp/product/B07NKCYT5Z
  • A pair of SMA to BNC adapters: https://amzn.to/37krHwj
  • A run of RG-58 coax with BNC connectors: https://amzn.to/2JckHcR

Plus some additional bits and pieces like some rope to hang the antenna, some nylon cable ties, a bit of insulated wire, duct tape and some tools. Notice that the above list can be shortened if you already have some of the needed stuff and this, in turn will lower (the already low) cost of the antenna.

Putting the pieces together

Ok, let’s move on to the build phase. The first thing to do will be measuring your available space to find out how much wire we’ll be able to put on the air; in doing so, consider that (as in my case), the antenna could be mounted in “inverted Vee” configuration which will allow to fit the antenna even in limited space.

In any case, after measuring the available space, let’s subtract at least 1m (50cm at each end) to avoid placing the antenna ends too near to the supports. Also, if in “inverted Vee” config, we’ll need to subtract another 50cm to keep the feedpoint (center/box) away from the central support.

Once we’ve measured, we may start by cutting two equal lengths of 3-conductor wire. Next, we’ll remove a bit of the external sleeve to expose the three conductors and then we’ll remove the insulator from the ends of the three exposed wire (and repeat this at the other end of the cable and for both arms).

The resulting ends of each arm should look somewhat like in the example image below

Now we’ll need to connect the wires in series. We’ll pick one of the cables which will be the two arms of our antenna and, assuming we have the same colors as in the above image, we’ll connect the green and white together at one end and the black and green together at the other end. Repeat the same operation for the second arm and the cables will be ready.

Now, to have a reference, let’s assume that the ends of each arm with the black “free” (not connected) wire will go to the center of our dipole.

Leave the two arms alone for a moment, and let’s install the balun inside the waterproof box. To do so, we’ll start by cutting a (small) hole through the single rubber cap found at one side of the box, then insert the cap reversed, so that it will protrude to the inside of the box and not to the outside. Slide the balun SMA connector through the hole so that it will protrude outside the box.

Now use a marker to mark the balun position and remove the balun from the box. Pick a piece of wood/plastic or other insulating material, cut it to size (refer to marking and to balun size) and drill four holes matching the one found on the balun board. Slide four screws through the holes and lock them with nuts, the screws should be long enough to extrude for some mm. Now insert the balun in the screws using the holes present on the balun board and lock it with nuts (be gentle to avoid damaging the balun). At this point, add some “superglue” to the bottom of the support we just built, slide the balun SMA connector through the rubber cap hole we already practiced, and glue the support to the bottom of the waterproof box.  Wait for the glue to dry.

Just to give you a better idea, see the photo above. That’s a photo of the early assembly of my balun. Later on, I rebuilt it as described above (but took no pics!), the image should help you understanding how it’s seated inside the box–by the way in our case it will be locked by the screws to the plastic support we glued to the box.

While waiting for the glue to dry, we may work on the dipole centerpiece.

If you bought one like I did, connecting the arm “black” (see above) wires should be pretty straightforward. If instead you choose to use a PVC pipe you’ll have to drill some holes to pass and lock the wire so that the strain will be supported by the pipe and not by the wire going to the balun box. In either case, connect a pair of short runs of insulated wire to the end (black) wire coming from each end. Those wires should be long enough to reach the balun wire terminal block inside the box.

Assuming the glue dried, it’s time to complete the feedpoint connection.

Bring the two wires coming from the centerpoint inside the waterproof box. Pick one of the wire terminal blocks which came with the balun (the “L” shaped one should be a good choice) and connect the wires to it. Then, slide the block in place until it locks firmly. After doing so, close the box and screw the SMA-BNC adapter onto the SMA connector coming from the balun. Our centerpiece and arms will now be ready, and will be time to put our antenna up!

I’ll skip the instructions about holding the arm ends and the centerpiece up, since I believe it should be pretty straightforward. Just ensure to put the antenna as high as possible and, if you have room make the arms as long as possible. In my case, due to my (self-imposed) limitations, the antenna was installed on a balcony. The arms have a length of about 3.5m each and the feedpoint (in the image above) sits at about 9m off the ground.

The more acute readers probably noticed those “blobs” on the coax, they are snap-on ferrite chokes I added to the coax (there are more of them at the rx end) to help tame common mode noise. I omitted them from the “BoM” since they may be added later on.

Anyhow, now that you have your LLD up it will be time to give it a test! In my case, I decided to start by running an FT8 session to see what the antenna could pick up during 8 hours, and the result, on the 20 meters band, is shown on the following map (click to enlarge):

Later, that same antenna allowed me to pick up signals from the Neumayer station in Antarctica–not bad, I think!

Some final notes

While running my “balcony experiment”, I built and tested several antennas, including a vanilla “randomwire”, a dipole, and a T2FD.

Compared to those, the LLD offers much less noise and better reception on a wide frequency range. By the way, it won’t perform miracles, but it’s serving me well on the LW band, on most ham bands, and even up to the Aircraft bands–indeed, was able to pick up several conversations between aircraft and ground air traffic control.

All I can suggest is that given a linear-loaded dipole is so simple, quite cheap, and may fit many locations, why don’t you give it a spin–?  🙂

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Radio Waves: Ajit Pai to Resign, Hams Need to Embrace Hacker Community, Coast Guard Might Abandon HF Voice Watchkeeping, and FCC Action Against Unauthorized Transceivers

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!


FCC Chairman Ajit Pai to leave agency on Inauguration Day (PBS News Hour)

Federal Communications Commission Chairman Ajit Pai, a Republican, says he is leaving the telecommunications regulator on Inauguration Day.

President-elect Joe Biden will choose a new Democratic head for the agency. A new administration typically picks a new chairman.

Pai has presided over a contentious FCC over the last four years. He undid net neutrality rules that barred internet service providers like Comcast and AT&T from favoring some types of online traffic over others in 2017 and championed other deregulatory efforts. He has also worked to free up spectrum for cellphone companies so they can roll out 5G, the next-generation wireless standard that promises faster speeds, and cracked down on Chinese telecom companies as national security threats.

The incoming FCC is likely to try to reinstate net neutrality rules and focus on closing the “digital divide,” getting internet service to Americans who don’t have it because it’s not available or they can’t afford it.[]

Ham Radio Needs To Embrace The Hacker Community Now More Than Ever (Hackaday)

As many a radio amateur will tell you, ham radio is a hobby with as many facets as there are radio amateurs. It should be an exciting and dynamic place to be, but as those who venture forth into it sometimes sadly find out, it can be anything but. Tightly-knit communities whose interests lie in using $1,000 stations to chase DX (long-distance contacts), an advancing age profile, and a curious fascination of many amateurs with disaster communications. It’s something [Robert V. Bolton, KJ7NZL] has sounded off about in an open letter to the amateur radio community entitled “Ham Radio Needs To Embrace The Hacker Community Now More Than Ever“.

In it he laments that the influx in particular of those for whom disaster preparedness is the reason for getting a licence is to blame for amateur radio losing its spark, and he proposes that the hobby should respond by broadening its appeal in the direction of the hacker community. The emphasis should move from emergency communications, he says, and instead topics such as software defined radio and digital modes should be brought to the fore. Finally he talks about setting up hacker specific amateur radio discussion channels, to provide a space in which the talk is tailored to our community.[]

Coast Guard Proposes to Discontinue HF Voice Watchkeeping (ARRL News)

The US Coast Guard has invited comments by January 21, 2021, on a proposal to discontinue HF voice watchkeeping. The proposal [PDF] appeared on November 20 in the Federal Register. The USCG proposes to cease monitoring 4125, 6215, 8291, and 12,290 kHz, in the contiguous US and Hawaii, due to a lack of activity.

“We believe this change would have a low impact on the maritime public, as commercial satellite radios and Digital Selective Calling (DSC) marine-SSB HF radios have become more prevalent onboard vessels,” the Coast Guard said. “However, we would like your comments on how you would be affected if we terminated monitoring HF voice-only distress frequencies within the contiguous US and Hawaii, particularly if you use HF, but do not currently have a commercial satellite radio or an HF DSC-capable radio aboard your vessel.”[]

FCC takes action against marketing of unauthorized transceivers (Southgate ARC)

On November 24 FCC Enforcement Bureau (EB) issued a citation and order concerning the illegal marketing of unauthorized radio frequency devices

The citation says:

This CITATION AND ORDER (Citation), notifies Rugged Race Products, Inc. d/b/a
Rugged Radios (Rugged Radios or Company) that it unlawfully marketed six models of radio frequency devices that (a) operated outside the scope of their respective equipment authorization, or without any equipment authorization; (b) permitted any operator to program and transmit on new frequencies using the device’s external operation controls; and (c) lacked the appropriate labeling. Specifically, Rugged Radios marketed models RH5R-V2, RM25R, RM25R-WP, RM50R, RM60-V, and RM100 in violation of section 302(b) of the Communications Act, as amended (Act), and sections 2.803(b), 2.925(a)(1), 80.203(a), 90.203(a), 90.203(e), 95.361(a), and 95.391 of the Commission’s rules.

Read the Citation and Order at
https://docs.fcc.gov/public/attachments/DA-20-1395A1.pdf

Source FCC Enforcement Bureau
https://www.fcc.gov/enforcement


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Matt’s Monster Mediumwave Radio Selectivity Shootout!

Many thanks to SWLing Post contributor, Matt Blaze (WB2SRI), for sharing another brilliant audio comparison featuring benchmark portable radios:


Medium wave selectivity shootout

by Matt Blaze

I did another monster medium wave portable receiver comparison, this time with the aim of comparing receivers’ ability to deal with weak signals in the presence of strong adjacent channels.

Once again, I went up to the roof with eight MW portables with built-in antennas and recorded them simultaneously along with my “reference signal”, from an Icom R-9500 with an active loop on the roof. As before, I recorded a narrated stereo mix with the Icom on the left and the rotation of radios for a minute or two each on the right, but have “solo” tracks available for the full time for each radio. The nine receivers in the lineup this time included:

  • Icom R-9500 (with amplified Wellbrook loop antenna on roof)
  • Potomac Instruments FIM-41 Field Intensity Meter (my personal favorite)
  • Panasonic RF-2200
  • Sony IC-EX5MK2
  • C.Crane Radio 2E
  • Sangean PR-D4W
  • Sangean ATS-909X
  • Tecsun PL-990X
  • XHDATA D-808

I recorded two signals, one at night and one during the day.

Nighttime Signals

The first was at night: WWL New Orleans on 870 KHz. This signal is usually weak to medium strength here, but is a challenge for two reasons: first, it shares the frequency with Cuba’s Radio Reloj, and it is squeezed between two much higher strength signals: Toronto’s CJBC on 860, and NYC’s WCBS on 880. So you need a decent receiver and careful antenna orientation to receive it well here. That said, everything did pretty well, though you can see that some radios did better than others.

The mix

Solo tracks

Icom IC-R9500

Potomac Instruments FIM-41 Field Intensity Meter

Panasonic RF-2200

Sony IC-EX5MK2

C.Crane Radio 2E

Sangean PR-D4W

Sangean ATS-909X

Tecsun PL-990X

XHDATA D-808

Daytime Signals

The second signal was during the day and was MUCH more marginal: WRJR Claremont, VA on 670 KHz. This was real challenge for any receiver and antenna. The signal was weak, and overshadowed by WCBM Baltimore on 680, a 50KW daytimer that is very strong here. (I’m not 100% sure that we were actually listening to WRJR – I never got an ID, but the station format and signal bearing was right). We can really hear some differences between the radios here.

The mix

Solo tracks

Icom IC-R9500

Potomac Instruments FIM-41 Field Intensity Meter

Panasonic RF-2200

Sony IC-EX5MK2

C.Crane Radio 2E

Sangean PR-D4W

Sangean ATS-909X

Tecsun PL-990X

XHDATA D-808

Everything (except the Icom) was powered by batteries and used the internal MW wave antenna, oriented for best reception by ear (not just maximizing signal strength, but also nulling any interference). The loop for the Icom was similarly oriented for best intelligibility.

For audio nerds: The recording setup involved a lot of gear, but made it fairly easy to manage capturing so many inputs at once. The portable radios were all connected to a Sound Devices 788T recorder, with levels controlled by a CL-9 linear mixing board control surface. This both recorded the solo tracks for the portables as well as providing a rotating mix signal for each receiver that was sent to the next recorder in the chain, a Sound Devices 833. The 833 received the mix audio from the 788T, which went directly to the right channel. The left channel on the 833 got audio from a Lectrosonics 822 digital wireless receiver, which had the feed from the Icom R-9500 in the shack (via a Lectrosonics DBu transmitter). The center channel on the 833 for narration of the mix, which I did with a Coles 4104B noise-canceling ribbon mic. This let me record fairly clean audio in spite of a fairly noisy environment with some wind.

All the radio tracks were recorded directly off the radios’ audio line outputs, or, if no line out was available, from the speaker/headphone jack through a “direct box” interface. I tried to make the levels as close to equal as I could, but varied band conditions and different receiver AGC characteristics made it difficult to be completely consistent.

Making the recordings was pretty easy once it was set up, but it did involve a turning a lot of knobs and moving faders in real time. I must have looked like some kind of mad scientist DJ to my neighbors, some of whom looked at me oddly from their own roofs.

Happy Thanksgiving weekend!


Thank you, Matt, for another brilliant audio comparison! I appreciate the attention and care you put into setting up and performing these comparisons–not an easy task to say the least. That Potomac Instruments FIM-41 is an impressive machine!

By the way, I consider it a badge of honor when the neighbors look at me as if I’m a mad scientist. I’m willing to bet this wasn’t your first time! 🙂

Post readers: If you like this audio comparison, please check out Matt’s previous posts as well:

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