Category Archives: AM

The export version of the Tecsun PL-330 has landed

Tuesday evening, I picked up a package from Anon-Co with the new export version of the Tecsun PL-330 inside. Anon-Co sent this unit to me for evaluation at no charge to me. Anon-Co will start shipping the PL-330 next week and the price will be $59.99.

By request, I took a few photos of the PL-330 as I unpacked it. This should give you an idea about how the radio is packed and what is included in the Anon-Co package:

The Anon-Co PL-330 package includes:

  • Tecsun PL-330 receiver
  • an English owner’s manual
  • a brown synthetic velveteen carry pouch
  • MicroUSB charging cable
  • earphones

My first thought? It looks like a mini PL-990!

The PL-330 is powered by one BL-5C battery pack. To meet shipping regulations, the BL-5C is not pre-installed–you’ll need to do that yourself.

Note that the PL-330 lacks a fold-out back stand. That is unfortunate

On the air

Unfortunately, I’ve had no proper time to evaluate the PL-330 (comparisons) yet as this is an incredibly busy week for me.

I did, however, listen to the PL-330 as I worked outside all day Wednesday. Sadly, there was a lot of news to follow here in the States that day.

I was able to receive all of my benchmark local and regional AM and FM stations with no problem. For day-to-day broadcast listening, it seems to be a solid portable.

It’s still early days, but I think the PL-330 may be one of the best portables for FM I’ve tested in a while. On Wednesday, I tuned to WFAE in Charlotte a number of times throughout the day and the PL-330’s lock on the station was rock-solid. WFAE’s transmitter is just over one hundred miles from my home, so this is typically a tough catch if I’m inside my home or my car, etc.

The real test? I can also receive WFAE with the PL-330 in my kitchen window. Again, only a small number of portables can reliably grab WFAE’s signal from that spot. Indeed, the PL-330 almost receives WFAE as if were a local station.

While this is far from a laboratory test, it is certainly a real-world test for this radio enthusiast.

I’ve yet to dive into the shortwaves, although I’m incredibly curious how well the sync lock might work. I’m keeping expectations low–after all, this is a $60 radio. The price point is quite good for sporting upper and lower sideband reception, let alone synchronous detection.

For more information about the PL-330, I’d encourage you to check out the following posts:

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Radio Waves: Solar Radios Help Kenyan Children, Synchronous AM’s History, FM Radio on Jupiter, and New WSJT mode Q65

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, Richard Langley, and the Southgate ARC for the following tips:


With schools shut by pandemic, solar radios keep Kenyan children learning (Thomson Reuters Foundation)

Solar-powered radios have been distributed to the poorest homes that lack electricity access, with lessons broadcast daily during the COVID-19 crisis – and perhaps beyond

TANA RIVER, Kenya, Dec 23 (Thomson Reuters Foundation) – Deep in Tana River County, in southeastern Kenya, a group of pupils formed a circle around their teacher, jotting down notes as they listened to a Swahili diction lesson coming from the solar-powered radio sitting in their teacher’s lap.

The radio the children from Dida Ade primary school gathered around was one of hundreds distributed for free to the most vulnerable households in the semi-arid region east of Kenya’s capital, Nairobi.

The radios allow children without internet access or electricity at home to continue studying while schools are closed to slow the spread of COVID-19, in a project that could also help children stay in education after the pandemic.

Funded by the Zizi Afrique Foundation, a Kenyan non-governmental organisation that produces research to drive education policy, the solar-powered radios also come with bulbs for household lighting and slots for phone-charging.

When schools across Kenya shut in March to slow the spread of COVID-19, Zizi Afrique did a survey in Tana Delta sub-county and found that just over one-fifth of households owned a radio and only 18% had access to electricity.[]

Synchronous AM’s Long and Tortuous History (Radio World)

AM boosters repeatedly have been proven effective, but the FCC consistently has declined to allow their wide use

With AM improvement on the radars of broadcasters and the FCC, there has been renewed talk in recent years about the subject of AM “boosters,” the carrier frequency synchronization of multiple transmitters. The commission opened a comment period on AM boosters in 2017.

It wasn’t the first time the FCC has explored this topic and failed to act on it. In fact, AM boosters have been proposed and tested dozens of times since the early days of radio. But even though the technology has repeatedly been proven effective, the commission consistently has declined to allow the operation of AM boosters on anything more than an experimental basis, for a variety of reasons.

Let’s take a moment to look back at the history of this beleaguered technology.

BOSTON REPEATER
In 1930, crystal control of transmitter frequencies was still an emerging technology, and the allowable frequency tolerance of a broadcast transmitter was +/- 500 Hz. Two stations operating on the same channel, even if widely geographically separated, could generate a heterodyne beat note of up to 1 kHz, a disconcerting annoyance to listeners.

Consequently, only a few stations were allowed to operate nationwide evenings on any one channel at the same time. Further, there were 40 clear-channel stations, each one having exclusive nationwide use of its frequency. As most of these clear-channel stations were network affiliates, many channels were wastefully duplicating the same programs.

In 1929, the respected radio engineer Frederick Terman proposed that, if all stations of the two networks (NBC and CBS) could synchronize their carrier frequencies within +/- 0.1 Hz to eliminate the heterodyne beat notes, they could all coexist on a single channel per network, freeing up dozens of channels for new stations.

Synchronization was first proved successful by the Westinghouse station WBZ in Springfield, Mass. Broadcasting from the roof of the Westinghouse factory, WBZ failed to cover Boston, so WBZA was opened as a Boston repeater. The two stations were synchronized on the same frequency beginning in 1926, using a tuning fork as a frequency reference.[]

FM Radio on Jupiter, Brought to You by Ganymede (EOS)

Another first from NASA’s Juno spacecraft: the detection of radio emissions from the Moon Ganymede, over a range of about 250 kilometers in the polar region of Jupiter.

Louis et al. [2020] present exciting new observations of radio emissions on Jupiter from the NASA Juno spacecraft – the first direct detection of decametric radio emissions originating from its Moon Ganymede. These observations were made as Juno crossed a polar region of the Giant Planet where the magnetic field lines are connected to Ganymede.

The radio emissions were produced by electrons at relativistic energy (a few thousand electron volts) in a region where the electron’s oscillation frequency (“plasma frequency”) is much lower than its gyration frequency (“cyclotron frequency”). Such electrons can amplify radio waves very close to the electron cyclotron frequency very rapidly, via a physical process called electron cyclotron maser instability (CMI). They can as well produce aurora in the far-ultraviolet – which was also observed by the camera on Juno.

Juno was traveling at a speed of approximately 50 kilometers per second, and it spent at least about 5 seconds crossing the source region of the emission, which was therefore at least about 250 kilometers in size.

The observed decametric radiation on Jupiter is clearly the “shorter cousin” (in wavelength) of the auroral kilometric radiation on both Earth and Saturn: the CMI being responsible for their production on the three planets.

Citation: Louis, C. K., Louarn, P., Allegrini, F., Kurth, W. S., & Szalay, J. R. [2020]. Ganymede?induced decametric radio emission: In situ observations and measurements by Juno. Geophysical Research Letters, 47, e2020GL090021. https://doi.org/10.1029/2020GL090021

Andrew Yau, Editor, Geophysical Research Letters[]

New WSJT mode Q65 (Southgate ARC)

WSJT-X 2.4.0 will introduce Q65, a digital protocol designed for minimal two-way QSOs over especially difficult propagation paths

On paths with Doppler spread more than a few Hz, the weak-signal performance of Q65 is the best among all WSJT-X modes.  Q65 is particularly effective for tropospheric scatter, ionospheric scatter, and EME on VHF and higher bands, as well as other types of fast-fading signals.

Q65 uses 65-tone frequency-shift keying and builds on the demonstrated weak-signal strengths of QRA64, a mode introduced to WSJT-X in 2016.  Q65 differs from QRA64 in the following important ways:
•A new low-rate Q-ary Repeat Accumulate code for forward error correction
•User messages and sequencing identical to those in FT4, FT8, FST4, and MSK144
•A unique tone for time and frequency synchronization.  As with JT65, this “sync tone” is readilyvisible on the waterfall spectral display.  Unlike JT65, synchronization and decoding are effective even when meteor pings or other short signal enhancements are present.
•Optional submodes with T/R sequence lengths 15, 30, 60, 120, and 300 s.
•A new, highly reliable list-decoding technique for messages that contain previously copied message fragments.

Read the new Q65 Quick Start Guide at
https://physics.princeton.edu/pulsar/k1jt/Q65_Quick_Start.pdf


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Radio Waves: Media Network Returns, Pack Seeks Lasting Control, Airtime on ex-DW relay station, and KCRW Berlin Signs Off

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 Jonathan Marks, Kim Elliott, and Dennis Dura for the following tips:


Media Network Returns Jan 1st, 2021 (Critical Distance via Vimeo)

Media Network returns for a second series. Premieres here on Vimeo Friday January 1st 2021. In the meantime, how many faces do you recognise?

Trump Appointee Seeks Lasting Control Over Radio Free Europe, Radio Free Asia (NPR)

Michael Pack’s stormy tenure over the federal agency that oversees government-funded broadcasters abroad – including the Voice of America – appears to be coming to a close. Yet President Trump’s appointee has sparked an internal outcry by taking bold steps to try to cement his control over at least two of the networks and to shape the course of their journalism well into the Biden administration.

Pack, the CEO of the U.S. Agency for Global Media, also serves as chairman of the boards of Radio Free Europe/Radio Liberty and Radio Free Asia. Pack and the members of the boards have now added binding contractual agreements intended to ensure that they cannot be removed for the next two years. Pack stocked those boards with conservative activists and Trump administration officials, despite a tradition of bipartisanship.

In other words, although President-elect Joe Biden has already signaled he intends to replace Pack as CEO of the parent agency soon after taking office next month, Pack would maintain a significant degree of control over the networks. Pack and USAGM declined requests for comment.

NPR has reviewed the language of the contracts, which have yet to be signed by the new presidents of the two networks – both of whom were appointed by Pack this month. The Radio Free Europe/Radio Liberty contract was slated to be approved on Wednesday but appears to have been withdrawn from consideration after internal objections and inquiries from Congressional aides, NPR and other media. It is unclear what the future holds for the initiative from Pack.[]

Click here to download the RFE/RFA protest letter.

Sri Lanka to sell airtime on ex-DW relay station to Encompass Digital Media (Economynext)

ECONOMYNEXT – Sri Lanka has agreed to sell airtime on a former Deutsche Welle relay station in Trincomalee in the North East of the island to UK based Encompass Digital Media Services, London.

Germany’s DW built the relay station in Sri Lanka in 1980 for mainly for international shortwave (HF) broadcasting. It also has a medium wave transmitter for South Asia.

The station was given to state-run Sri Lanka Broadcasting Corporation in 2012.

The rise of television and the internet had made international broadcasts more accessible, though SW retains audiences in many countries.

London based Encompass Media has proposed to transmit shortwave and mediumwave programs from the station. It has offered to pay 49,000 dollars and 16,000 dollars a month for the airtime.

The Cabinet of Ministers had approved the proposal in November 2020. (Colombo/Dec29/2020)[]

America’s voice goes silent in Berlin as last US radio station closes (Politico)

BERLIN — American radio is a Berliner no more.

The postwar American presence on Berlin’s airways that began in the summer of 1945 when the city was still digging itself out of the rubble of World War II ended this month as the last U.S. radio station in the German capital ceased operation. For years, the station, known in its final iteration as KCRW Berlin, offered listeners a daily helping of local English-language news and eclectic music.

The idea behind the station was to deliver Berliners a dose of unfiltered Americana and to serve as a transatlantic bridge. Even in an era of podcasts, the offering found a loyal if small audience, from daily commuters to American expats.

“It’s a sad moment embodying the end of a tradition,” Anna Kuchenbecker, a member of KRCW Berlin’s board, said, blaming the shutdown on the pandemic. KCRW Berlin was operated in partnership with a California public radio affiliate with the same call sign. The economic fallout of the coronavirus forced the U.S. station to make steep cuts, including layoffs.

The closure comes at a time of deepening estrangement between the U.S. and Germany following years of Donald Trump’s attacks on Berlin. The longtime allies have recently been at odds across a range of issues, from climate policy and trade to foreign policy.

KCRW Berlin wasn’t eligible to receive any of the billions in broadcast fees the German government collects in order to finance domestic public television and radio. Former station officials say it would have been up to KCRW in California and NPR, which is partly funded by the U.S. government, to save the Berlin operation.

“The pain that we are feeling with KCRW Berlin going away is something that is not necessarily felt in the U.S.,” the station’s program director Soraya Sarhaddi Nelson said.

But even in its home city, the station’s death received little attention; Berlin media barely took notice of KCRW’s shuttering or what it signified, noting the move only in passing.[]


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CBC Yukon features Finnish DXer who logged their station from 7,000 km away

Image Source: CBC/Google Earth

(Source: CBC Yukon)

From Yukon to Finland: CBC’s radio signal heard from afar

Host Elyn Jones heard saying ‘this is Yukon Morning,’ about 7,000 kilometres away

A keen listener has managed to hear CBC Yukon’s radio broadcast from about 7,000 kilometres away.

Jorma Mäntylä lives in Kangasala, Finland.

On Oct.15 he was scanning the airwaves and came across the signal from Dawson City, Yukon, broadcasting CBC’s Yukon Morning show.

The signal lasted about an hour.

“It was clear to hear your Yukon Morning program led by a female journalist and the morning news,” he said.

The host that day was Elyn Jones in Whitehorse.

Upon hearing the signal Mäntylä sent an email with an attached audio clip asking for confirmation.

CBC Yukon wrote him back to confirm what he’d heard. We also scheduled an interview by videoconference to speak about his hobby.

No ordinary radio

Mäntylä doesn’t have an ordinary radio. He’s part of the Suomen Radioamatööriliitto, the Finnish Amateur Radio League.

He started listening to signals in 1967.

He uses custom-built equipment to scan for shortwave and AM radio signals.

Sometimes it takes a while, through the crackle, to determine the language being spoken and from where the signal is broadcasting.

The game is to discover new stations, identify them, and then send an email to confirm the reception.

“I very often listen to foreign radio stations. That has been my hobby for 50 years,” he said. ‘It’s given me interesting moments learning about other cultures and nations,”

Hearing a signal from Yukon is rare. Mäntylä says on Oct. 15 he also heard broadcasts from radio stations in Anchorage and Fairbanks, Alaska.

Click here to continue reading the full article.

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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:

Audio Player
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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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