Category Archives: Broadcasters

Radio Waves: The Enduring Appeal of Shortwave Radio, Ampegon Ships 100kW Transmitter, 4,270 km FM DX, Emisión Sefarad, and the Eswatini Transmitter

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 David Goren, Tracy Wood, and David Iurescia for the following tips:

Deep in the dial: Lawrence English on the enduring appeal of shortwave radio (The Wire)

To mark The Wire’s Radio Activity special issue, the Room40 label head examines the uncanny sonic properties of high frequency transmission

100 years ago this December, voices spoken on one side of the Atlantic shot through the atmosphere and materialised on the other side of the ocean. It was a moment of jubilation for those involved and proof of concept that formalised the possibilities of an emergent zone of signalling and communications called radio. It also helped to bring into focus the unrealised potential of this technology as a mechanism for access to, and transference of, signals of all sorts from around the globe.

These first transatlantic voices were carried on wavelengths of around 200 metres. At that time, which was before the creation of the International Telecommunication Union who coordinate the use of various frequency bandwidths on the radio spectrum, the length of the waves sat at the cusp of two bandwidths: the lowest end of medium wave and the highest end of shortwave. Not only had this amateur broadcast achieved new distances over which communication might pass, but it also demonstrated the process of skywave propagation. This method, whereby radio signals are bounced off the ionosphere (the electrically charged upper layer of Earth’s atmosphere), extends the range of transmission of a radio signal considerably.

What made skywave propagation especially interesting was that, as a technique, it was being actively explored by both amateur radio enthusiasts (the so-called ham radio movement) and commercial interests alike. In fact, throughout the 1920s experimental approaches to radio (broadcast and otherwise) were an area of intense interest and research. This attention was aided by booms in broadcast hardware and a growing understanding about how the technology could be deployed to radically reconfigure the ways in which transmission of voice, music and other signals might be achieved over greater and greater distances.[…]

Ampegon Ships First of Four 100kW Shortwave Transmitters (Ampegon)

Ampegon has shipped the first of a series of four new 100kW shortwave transmitters from its factory in Kleindöttingen, Aargau, Switzerland. The transmitter RF and PSM sections were carefully moved out of the factory and onto a lorry for transfer to our shipping partner. There it will be securely packed in shipping crates and prepared for onward transport.

Ampegon’s TSW-2100 100kW shortwave transmitter is an economical and reliable transmitter system intended for regional to international broadcasting. Its relatively high output power provides good signal strength hundreds of kilometers away from the transmitter when attached to a good antenna, while it is still of sufficiently low power to allow operation from standard low voltage three-phase electrical connections.

Almost all shortwave transmitters currently in production feature digital DRM capabilities, since they are specified with DRM modulators and content servers. This permits the delivery of stereo FM-quality sound and a digital data channel over the same 9/10kHz broadcast band as an analogue transmission. Additionally, when used in DRM mode, power consumption is reduced by approximately 40%-50%, saving broadcasters hundreds of thousands of dollars each year in electricity costs!

With this transmitter safely on its way to its new home, attention turns to completing the next two systems currently under testing. All transmitters undergo rigorous factory acceptance testing to ensure installation and commissioning can be completed with minimum possible disruption.

For further information about Ampegon’s high power shortwave transmitter range, please see our product pages at: www.ampegon.com/products/sw-tube-transmitters/

To learn more about DRM transmissions, please visit the DRM consortium here: www.drm.org[…]

FM radio station on 90.7 MHz near Quebec is heard across the Atlantic in Ireland – 21st June 2021 (EI7GL)

21st June 2021: This was a remarkable day for VHF propagation with a very rare trans-Atlantic opening on the 88-108 MHz FM band.

As outlined in a previous post, Paul Logan in the north of Ireland managed to hear a radio station from Greenland on 88.5 MHz from roughly 13:00 to 14:00 UTC on the 21st of June.

Near the end of this opening, Paul also managed to hear a radio station near Quebec in Canada, a distance of approximately 4,270 kms !

The radio station in question was the 100 kilowatt transmitter of CBRX-FM-3 ICI MUSIQUE which is located at Riviére-du-Loup just to the east of Quebec City in Canada.

A short audio clip from Paul is embedded below…

[Click here to continue reading this post on EI7GL’s blog…]

For 35 years, mother-daughter duo has run a radio show on Ladino and Sephardic Jewish culture from Madrid (South Florida Sun Sentinel)

Matilde Gini de Barnatán and her daughter Viviana Rajel Barnatán didn’t set out to make Jewish history in Spain.

In the 1960s and ’70s, Matilde, now 85, established herself in Argentina as a prominent researcher, teacher and scholar of the history of Sephardic culture and the Spanish Inquisition in Ibero-America. Her extensive expertise and recognition in Argentine intellectual circles helped her become a close friend of the renowned writer Jorge Luis Borges.

Viviana Rajel, now 55, studied acting in Buenos Aires.

But in April 1986, as Israel was establishing its diplomatic relations with Spain, so did the Spanish government with its Jewish ancestry. Through its state-owned public radio service, the country set out to develop a cultural project in the form of a radio show to reintroduce Ladino — or Judeo-Spanish, an endangered Romance language spoken by past generations of the Sephardic Jewish Diaspora — as a vital piece of Spanish heritage.

It was “a gesture of friendship between Spain, Israel and the Sephardic communities around the world,” according to Viviana Rajel.

Due to the lack of native Ladino speakers in Spain at the time, there was virtually no one available to take on the endeavor. Through academic networks of Sephardic scholars that linked Spain with Argentina, Matilde was found and asked to relocate and be the project’s primary role — which its developers pitched as a way to redress the historical wrong of the Spanish Inquisition, the 15th-century expulsion of Jews from the country.

Viviana Rajel followed her mother because she wanted the show to portray the matriarchal essence behind the oral tradition of Ladino, which traditionally passes from generation to generation through the women of the family.

Hence was born “Emisión Sefarad” (or “Sepharad Broadcast”), a weekly radio show available online and on shortwaves in Judeo-Spanish that broadcasts every Sunday on the Spanish National Radio’s overseas service. April marked 35 years of the program, which has aired uninterrupted since its launch.

Click here to continue reading, noting that this article is behind a paywall.

The incredible reach of the Eswatini transmitter (Evangelical Focus)

TWR Africa has been spreading hope throughout the African continent since 1974 engaging millions in more than 50 countries.

Radio, the internet, mobile devices, TWR360, and other media sources open doors to allow the gospel to spread to countries where Christianity is legally forbidden, to animistic tribes in the Nuba Mountains who are cut off from the rest of civilization, and to displaced people fleeing war in northern Mozambique. We have been equipped with powerful media tools to take the Good News into places where we physically cannot go. Through the power of the Spirit, we can use radio and other mass media to accomplish the task Jesus gave us to make disciples of all nations.

TWR broadcasts from various transmitter sites in Africa including TWR Eswatini and the Middle East on shortwave, and TWR West Africa on medium wave (AM). In addition, TWR broadcasts programs via several TWR partner FM radio networks and a satellite channel that offer direct-to-home services to various parts of the continent.[…]

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Radio Waves: New Ham Radio Store, SDR Market worth $14.5 billion by 2025, Retaining 87.7 FM, and Hard-Core-DX now on Slack

Radio Waves: Stories Making Waves in the World of Radio

Many thanks to SWLing Post contributors Tracy Wood, Bill Patalon, Dennis Dura, and Mike Agner for the following tips:

Amateur Radio Field Day synchronized with radio store’s Grand Opening (Ramona Sentinel)

Ham radio hobbyists will test their emergency preparedness skills alongside All Day Radios’ Grand Opening celebration in Ramona next weekend.

The Amateur Radio Field Day, a national emergency preparedness activity sponsored by the American Radio Relay League (ARRL), will be held in Ramona from 11 a.m. Saturday, June 26 and continues for 24 hours until 11 a.m. Sunday, June 27.

All Day Radios co-owner Peter Von Hagen will coordinate his Grand Opening in sync with Field Day from Friday through Sunday. The store is at 2855 state Route 67 between Dye Road and Hope Street, and Field Day will be held next door.

Von Hagen said the object of Field Day, held annually the fourth weekend in June, is to communicate on as many stations on amateur bands as possible to test the capabilities of communications equipment. Operators will be using backup sources of power such as solar power and batteries, he said.[…]

Software Defined Radio Market worth $14.5 billion by 2025 (Markets and Markets Newsletter)

The demand for software defined radios, especially in the commercial applications, such as telecommunication, transportation, and commercial aviation, has been affected to a great extent. Due to precautionary measures undertaken by many countries to stop the spread of COVID-19, several public/private development activities have been stopped, resulting in a drop in demand for software defined radios. However, this trend seems to vary from country to country. For instance, the demand for software defined radios in Europe and the Asia Pacific has been affected by the pandemic owing to the stoppage of development activities.

Based on application, the commercial segment of the software defined radio market is projected to witness the substantial growth during the forecast period

In terms of application, the market is segregated into commercial and defense. The rising usage of SDRs in commercial applications including aviation communication, marine communication, transportation, telecommunication is supporting the segment growth. Software defined radios are predominantly used in Air Traffic Control (ATC), transportation, and telecommunication applications. They are easily upgradable and provide high data transmission rate that further enhances its usage for commercial segment.

Cognitive/ Intelligent radio sub segment of the software defined radio market by type is projected to witness the highest CAGR owing to increasing improvements in cognitive radio products.[…]

FCC Report 6/13: Has A STA Based Doorway Been Cracked Open To Retain 87.7 FM Operations? (Radio Insight)

The FCC has sent another reminder to licensees of analog low power television stations regarding the July 13 drop-dead date. If an analog LPTV has not applied for a digital CP by that date its license will be cancelled and those that have Construction Permit’s but will not be ready to broadcast digitally will need to file a waiver request but still will be required to turn off their analog signal on the 13th and cease operation until ready to begin operating with their digital facilities.

This will of course affect the thirty something LPTV’s on analog channel 6 operating as radio stations on 87.75 MHz. While some of these signals will be moving to other channels, many will be remaining on channel 6 and have spent the past few years seeking loopholes to continue to broadcast an analog audio signal past the digital conversion deadline. Venture Technologies Group, which owns five affected stations, threw the door wide open this week with the grant of a six month STA for its KBKF-LD San Jose CA. KBKF-LD, which is leased to Educational Media Foundation to air its “Air 1” network, will be permitted to continue to offer an analog audio signal on 87.75 FM in its ATSC 3.0 digital video signal.[…]

Introducing: Hard-Core-DX Slack Chat (Hard-Core-DX)

From: Risto Kotalampi

Hi all,

Hard-Core-DX has been a pioneer in connecting shortwave listeners for nearly 30 years now. In its core it has been emailing lists and web sites and some other experiments which have either spun to become popular on their own (e.g. various ham related spotting sites or Online Log which is very popular in Finland) or not. Today we wanted to try to branch out into chat using Slack.

This is not the only chat there is… IRC, Facebook, Whatsapp etc have small circles for shortwave listeners but they have all been closed systems and not enabling an environment that can be used across devices and have conversations about any topics we choose. In the corporate world Slack has revolutionized communications amongst colleagues and partners in different companies. Much of work in U.S.A. small companies happens nowadays in Slack and not so much in emails.

Hard-Core-DX has signed up and created it’s very own Slack service.
If you want to join the HCDX Slack, please click this link and create your own HCDX Slack account:

https://join.slack.com/t/hard-core-dx/shared_invite/zt-rn83gamf-_UCfo9LYUVmoIBhb0~3cSg

Some basic rules of the Slack service:

When you join it, you will see some channels that have been created already. You can join them or if you can’t find the topic you’d like to chat about, please create your own.
HCDX will not be in the business of moderating what people are creating or discussing. If you create a channel, you will choose the policies of the discussion.
This can naturally invite some abuse. We will deal with it with Slack’s policies as time comes.
You are welcome to invite your DX friends to the HCDX Slack and grow the community. Invite happens from menu in upper left corner and link “Invite people to Hard-Core-DX”
Let’s keep subjects within shortwave radio, broadcast, utility, pirate DXing & ham radio if possible to keep the service relevant to us
This is an experiment… if it doesn’t gain popularity or becomes a burden, we will shut it down. But for now, if you want to experiment and see if this is where you want to chat with your DX friends, join the fun.

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Guest Post: Great news from CFVP Alberta!

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Many thanks to SWLing Post contributor, Dan Robinson, who shares the following guest post:

Big news in these days of declined shortwave

by Dan Robinson

It is rare — no super rare — that we get any good news these days about shortwave broadcasting. Remember the excitement a few years ago when Guinea returned to shortwave? Then, Nigeria returned but has now become worryingly intermittent.

Today, a station returned to shortwave, one that was absent for some time.

CFVP, the low power relay of 1060 kHz AM in Calgary, Alberta returned to 6,030 kHz with the help of amateur radio operators. The station had been off the air through 2019 — the last time it was reported was in late 2018 when it was relaying CKMX 1060 AM in Calgary.

According to a note posted on the World of Radio group:

“two engineers from Bell Media, Dale and Gerry, who are also hams, VA6AD and V6QCT respectively, rebuilt the transmitter (partially with ham radio parts) and repaired the connection to the antenna with a temporary matching network…the temporary matching network means that not all the 100 watts are going into antenna.”

According to Harold Sellers, who is acting as eQSL manager for the re-activated shortwave station, CFVP 6030 was back on the air as of 0900, though I was unable to hear it until later on June 19th. Best reception was via SDR sites in southern Alberta, northern Montana, Idaho and up in Edmonton, Alberta.

Programming consisted of straight comedy routines from Funny 1060 AM, the Calgary station that carries old recordings of standup comedians, with local IDs and ads mixed in every few minutes. I made a video showing CFVP reception on one of the SDR sites, changing between 6,030 kHz and 1060 kHz which was also audible at SDR locations.

Earlier this year, in March, DX’er Don Moman reported the following, which proved to be true:

” . . .They had a transmitter problem which has been fixed, but they have also identified an antenna issue. The problem [was] troubleshooting and testing the antenna and matching network in the point blank presence of a 50kw AM transmitter. Testing/ repair on CFVP radiator will be done when the 50kw signal can be powered down or off, to enable more accurate testing. Bell will not power down or shut down during ratings periods which are long and frequent. Having said that, repair will likely happen with the above taken into consideration, as well as warm weather. Best guess: Before next winter at the latest, this spring the earliest.”

In August, Harold Sellers reported that the ground at the base of the shortwave tower was under water, and that grounding rods and ground wire needed replacement, and later that the tower grounding had been replaced/fixed. The transmitter also had issues but was repaired and back out at the site.

I quickly sent a reception report to the email address provided by Harold Sellers, and was pleased to receive back a eQSL which Harold said was the second one sent out to those who heard the station on its re-activation day.

Those of us who began our listening in the 1960’s (some much earlier than that!) remember the great days when Canada had a number of regional stations on shortwave. QSLs from some of those, including a 1983 QSL from CFVP/Calgary, are attached to this article.

A screenshot of CFVP as it was being heard on reactivated 6,030 kHz is also shown.

Interestingly, the Wikipedia listing for CKMX shows 6,030 kHz as being active — it’s not known, however, whether the Wikipedia listing was ever updated to note that 6,030 kHz was off the air for nearly 2 years.

Possible frequencies for the 2021 BBC Midwinter Broadcast

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Halley VI: The British Antarctic Survey’s new base (Source: British Antarctic Survey)

Click here to read an update to this post (17 June 2021).

Many thanks to SWLing Post contributor, Richard Langley, who follows up with the following information about the 2021 Midwinter Broadcast to Antarctica:

As usual, there was a test of this year’s possible frequencies yesterday (14 June) from 21:30 to 21:45 UTC.

They were:

- 6035 kHz from Dhabbaya
- 6170 kHz from Ascension
- 7305 kHz from Woofferton
- 9505 kHz from Woofferton

As has been the case in past years, three of these frequencies will be chosen for the actual broadcast. Here in NB yesterday, good signals were received on 6170, 7305, and 9505 kHz. 6035 kHz was not heard.

Thank you for sharing this, Richard!

Radio Waves: “Tuning In The World”, Subcarrier Signals, SSTV Event from the ISS, the Zeptosecond and Israel Army Radio Shut Down

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Radio Waves: Stories Making Waves in the World of Radio

Many thanks to SWLing Post contributors Tracy Wood, Dennis Dura, John Forsyth, and the Southgate ARC for the following tips:

Tuning In The World (Far From Home)

When David Goren was 13 years old, he and his family went to visit their Uncle Lou.

“He was usually just railing about my long hair or criticizing rock and roll,” he recalled. But this time was different. “He gave me an old radio of his that had a shortwave band on it. I really didn’t know what that was. I asked my dad, and he was like, ‘You won’t hear anything on that!’”

David was curious, though, so after he got home, he turned it on, started fidgeting with the dial, and was amazed to discover sounds and music from around the world![…]

Click here to read the full post and click here to subscribe to the Far From Home podcast.

Subcarrier Signals: The Unsung Heroes of the FM Dial (IEEE Spectrum)

How subcarrier radio signals made room for hidden FM stations—and helped ensure that everyone has access to the news

A version of this post originally appeared on Tedium, a twice-weekly newsletter that hunts for the end of the long tail.

In our modern era, we tend to choose devices with as many functions as possible, and we bristle at the thought of an object with a single use—hence why umbrellas can be so frustrating to carry around. But sometimes, a single use case is exactly the right level of functionality. This is something I’ve been thinking about recently after I got my hands on a fairly large radio that has literally one function: You turn it on and a specific station plays, and there’s no surface-level way to do anything else with it.

This is a weird device—but for its niche, this device, called a subcarrier radio, was perfect. And it was one of many niches that subcarrier radios made possible.

What the heck is a subcarrier radio signal?
In 1985, a South Florida Sun-Sentinel article discussed a potentially lucrative offering for the owners of FM radio stations: ways to make extra money from parts of the licensed signal they weren’t already using.

This phenomenon was not unusual at the time; the practice had been around for decades. But what the article highlighted were the numerous ways radio signals were being used that the average listener was likely not even aware of—for background music, for stock reports, even to transmit computerized data.

And while station owners weren’t earning a ton of extra money—a single lease brought in US$1,400 a month (about $3,500 today)—for a struggling station, the additional revenue could mean the difference between being in the red and being in the black.

The thing that allows many radio stations to monetize their signals in this way is, essentially, a technical gap inside the FM broadcast signal. These gaps, or subcarriers, are frequencies that aren’t being used for the primary signal but could find secondary uses in more specialized contexts.[…]

Amateur Radio on Shuttle, Mir and ISS (Southgate ARC)

ARISS report there will be an ‘Amateur Radio on Shuttle, Mir and ISS’ Slow Scan TV (SSTV) event from June 21-26. Transmissions from the International Space Station will be on 145.800 MHz FM using PD120

The ARISS team will be transmitting SSTV images continuously from June 21 until June 26. The images will be related to some of the amateur radio activities that have occurred on the Space Shuttle, Mir space station and the International Space Station.

The schedule start and stop times are:

Monday, June 21 – Setup is scheduled to begin at 09:40 UTC (transmissions should start a little later).

Saturday, June 26 – Transmissions are scheduled to end by 18:30 UTC.
Downlink frequency will be 145.800 MHz and the mode should be PD120.

Those that recently missed the opportunity during the limited period of MAI transmissions should have numerous chances over the 6 day period to capture many (if not all 12) of the images.

Check the ARISS SSTV blog for the latest information
http://ariss-sstv.blogspot.com/

The signal should be receivable on a handheld with a 1/4 wave whip. If your rig has selectable FM filters try the wider filter for 25 kHz channel spacing.

You can get predictions for the ISS pass times at
https://www.amsat.org/track/

Useful SSTV info and links
https://amsat-uk.org/beginners/iss-sstv/

Meet the zeptosecond, the shortest unit of time ever measured (Space.com)

Scientists have measured the shortest unit of time ever: the time it takes a light particle to cross a hydrogen molecule.

That time, for the record, is 247 zeptoseconds. A zeptosecond is a trillionth of a billionth of a second, or a decimal point followed by 20 zeroes and a 1. Previously, researchers had dipped into the realm of zeptoseconds; in 2016, researchers reporting in the journal Nature Physics used lasers to measure time in increments down to 850 zeptoseconds. This accuracy is a huge leap from the 1999 Nobel Prize-winning work that first measured time in femtoseconds, which are millionths of a billionths of seconds.

It takes femtoseconds for chemical bonds to break and form, but it takes zeptoseconds for light to travel across a single hydrogen molecule (H2). To measure this very short trip, physicist Reinhard Dörner of Goethe University in Germany and his colleagues shot X-rays from the PETRA III at Deutsches Elektronen-Synchrotron (DESY), a particle accelerator in Hamburg.[…]

Defense minister says he is sticking to plan to shut Army Radio (The Times of Israel)

Defense Minister Benny Gantz reiterated on Wednesday his belief that Army Radio should not continue in its current format as part of the Israel Defense Forces.

“I think that IDF soldiers must be kept as far as possible from any political involvement, and the station should be apolitical, and it has long stopped being so,” Gantz said in response to a query from Shas MK Moshe Abutbul on the Knesset floor. “I don’t think there is any way to operate Army Radio in its current form, largely due to the political angle.”[…]

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Radio Waves: The silence of RCI, Cox Radio Hit by Ransomware, Asheville Radio Museum Reopens, and New Aluminium-Ion Battery Chemistry

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Photo from the RCI Sackville transmitter site in 2012, a few months prior to its closure.

Radio Waves: Stories Making Waves in the World of Radio

Many thanks to SWLing Post contributors Troy Riedel, NT, Tracy Wood and the Southgate ARC for the following tips:

The silence of Radio Canada International (Open Canada)

The former head of CBC News laments the evisceration of CBC’s international service and Canada’s shrinking voice in the world

For a country that once regarded itself as one of the world’s leading middle powers, Canada’s voice on the international scene is a strikingly quiet one these days. It reminds me of the line from that famous “dead parrot” sketch in Monty Python: “bereft of life, it rests in peace.”

The latest sign of this is the decision by CBC/Radio-Canada to implement changes that have effectively smothered Radio Canada International (RCI), its fabled global audio and online service that has helped serve as “Canada’s Voice to the World” for more than a half century.

In a December announcement replete with CBC doublespeak, the CBC unveiled a “major transformation” of RCI that, it claimed, would ensure RCI remains “a strong and relevant voice” in this century’s media landscape. Not surprisingly, the practical impact of these changes is precisely the opposite.

Flipping RCI’s historic mission on its head, the service will now focus more on ethnic minorities within Canada rather than on continuing to produce programs tailored uniquely for international audiences. More than half of RCI’s beleaguered staff have been laid off.

This latest CBC battering of RCI — a pattern that has gone on for decades — triggered considerable criticism. In February, a group of 32 prominent Canadians sent an open letter to Prime Minister Justin Trudeau and other senior government ministers urging that the CBC scrap its planned strategy and appoint an independent committee to plan a rebuild of the international service: “In an interconnected world in search of truth, facts and honest journalism, countries like Canada cannot abdicate their role on the world stage.” Its signatories included former prime minister Joe Clark, former foreign affairs minister Lloyd Axworthy, former UN ambassador Stephen Lewis, actor Donald Sutherland and author Naomi Klein. Continue reading…

Live streams go down across Cox radio & TV stations in apparent ransomware attack (The Record)

Live streams for radio and TV stations owned by the Cox Media Group, one of the largest media conglomerates in the US, have gone down earlier today in what multiple sources have described as a ransomware attack.

The incident took place earlier this morning and impacted the internal networks and live streaming capabilities for Cox media properties, such as web streams and mobile apps. Official websites, telephone lines, and normal programming remained running but some live programming could not go on air as scheduled.

“This morning we were told to shut down everything and log out our emails to ensure nothing spread. According to my friends at affiliate stations, we shut things down in time to be safe and should be back up and running soon,” a Cox employee shared in a private conversation earlier today. Continue reading…

Asheville Radio Museum reopens to public after months-long pandemic closure (WLOS)

The Asheville Radio Museum reopened to the public Saturday, June 5, following a months-long closure due to the pandemic.

The museum, located on the campus of A-B Tech, and closed in November to follow the campus’s COVID-19 protocol to protect students and staff.

Asheville Radio Museum boasts a premier collection of vintage radios with the goal to educate, demonstrate and fascinate visitors about the importance of the radio, which was named the second most important invention of the twentieth century on the Science Channel.

Saturday’s reopening was highlighted by the addition of newly-procured radios as well as refreshed displays throughout the museum. Continue reading…

Aluminium-Ion battery development (Southgate ARC)

The Graphene Manufacturing Group in Brisbane, Australia together with the University of Queensland have according to the GMG website developed a Graphene Aluminium-Ion Battery energy storage technology that has up to three times the capacity of a lithium-ion battery and can charge up to sixty times faster.

The battery was created by inserting aluminium atoms into perforations made in graphene planes.
The company claims that because the batteries lack an upper Ampere limit that would otherwise cause spontaneous overheating, the batteries are also safer. The stable base materials also facilitate their recycling later.

The company hopes to bring these cells to market by the end of 2021 or early 2022

https://graphenemg.com/

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Radio Waves: Shedding Light on the Hindenburg, Chip Shortages, NPR at 50, and July 4th SAQ Grimeton Transmission

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Radio Waves: Stories Making Waves in the World of Radio

Many thanks to SWLing Post contributors Ron, Rich Cuff, and the Southgate ARC for the following tips:

Radio Amateur’s Vintage Home Movie Film Sheds Light on Hindenburg Disaster (ARRL News)

Vintage home movie film provided by New Jersey radio amateur Bob Schenck, N2OO, was the highlight of a PBS documentary about the Hindenburg disaster. The film, shot by his uncle Harold Schenck, may provide clues as to what initiated the disastrous 1937 fire that destroyed the airship Hindenburg and claimed 35 lives as the German zeppelin was landing at Lakehurst, New Jersey. Harold Schenck tried to interest government investigators in his film, shot from a different angle than newsreel footage that begins only after the fire was well under way, but it was largely overlooked. “Nobody ever asked for it,” Bob Schenck explains in the documentary.

The Schenck film is the highlight of a PBS “NOVA” documentary, Hindenburg: The New Evidence, that investigates the issue in considerable depth in an effort to unlock the secrets of the cold case. The program aired on May 19 and remains available for streaming.

“My dad had bought this nifty Kodak camera — a wind-up movie camera, 8 millimeters — and he couldn’t come [to the Hindenburg landing] because he worked,” Bob Schenck recounted during the documentary. “So, he asked my uncle and my mom if they would take some shots and see the Hindenburg land.”

Bob Schenck approached Dan Grossman, an expert on airships, including Hindenburg, in 2012 during a commemoration of the disaster that forever memorialized radio reporter Herbert Morrison’s plaintive on-air reaction, “Oh, the humanity!” The NOVA documentary not only shares Schenck’s footage, which provided new clues to re-examine the cause of the explosion. The documentary also reviews scientific experiments that helped investigators come to a fresh understanding of what set off the fire. [Continue reading…]

Will chip shortage hit ham radios ? (Southgate ARC)

Glenn O’Donnell K3PP of Forrester Research notes the chip shortage may have a more serious impact than first thought and gives Amateur Radio rigs as an example of what might be affected

Self-described as a “ham radio nut,” O’Donnell discussed one of his hobbies to explain how the sway of tech titans could impact smaller companies as industries compete for limited resources.

“In this hobby, the newer radio “toys” are advanced technology, but the hottest radio might sell 5,000 units per year. If Apple wants 100 million chips, but the little ham radio company wants 5,000, Apple wins!” O’Donnell said.

Read the article at
https://www.techrepublic.com/article/global-chip-shortage-the-logjam-is-holding-up-more-than-laptops-and-cars-and-could-spoil-the-holidays/

NPR at 50: A Highly Selective History (Washington Post)

The network’s half-century evolution from an audio experiment to a media powerhouse

Today NPR is one of Washington’s most familiar and influential media companies, operating out of a gleaming, ultramodern broadcast facility on North Capitol Street. Its radio programs, online content, and podcasts reach millions of people around the world. But when it launched 50 years ago, in April 1971, National Public Radio was a decidedly scrappy enterprise.

How did a modest radio project from a bunch of audio idealists evolve into the multimedia behemoth that we now spend countless hours listening to? To celebrate NPR’s anniversary, we’ve put together a look at its history and transformation. Please note: If you would like to imagine the whole thing being read to you in the voices of Nina Totenberg and Robert Siegel, we won’t object. Click here to read the full article…

SAQ Grimeton Transmission on July 4th (Southgate ARC)

The annual transmission event on the Alexanderson Day with the Alexanderson Alternator from 1924, on VLF 17.2 kHz CW with the call sign SAQ, is scheduled for Sunday, July 4th, 2021.

The Alexander Grimeton Association are planning to carry out two broadcasts to the world from the old Alexanderson alternator SAQ. Only required staff will be in place, due to the ongoing pandemic.

Transmission schedule:

Startup and tuning at 10:30 CET (08:30 UTC) with a transmission of a message at 11:00 CET (09:00 UTC)
Startup and tuning at 13:30 CET (11:30 UTC) with a transmission of a message at 14:00 CET (12:00 UTC)

Live Video from World Heritage Grimeton Radio Station
Both transmission events can be seen live on our YouTube Channel.
The live video starts 5 minutes before the startup and tuning.
https://mailchi.mp/aff85163e64f/alexanderson-day-2021?e=2c0cbe870f

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