Category Archives: Digital Modes

DRM Mystery: Benn shares the latest on Turms Tech Station WIPE

The following article by Benn Kobb was posted on Dec. 25 to Glenn Hauser’s World
of Radio list on groups.io. I repost it here with Benn’s permission:


Subject: As the World ‘Turms’

It would seem like 2021 would end with no FCC action on the three mysterious entities requesting licenses under the umbrella of International Broadcasting, but likely involved in sending private messages to trading clients in Europe and Asia.

In fact there has been action, of a sort.

Two of those applicants are still waiting to receive construction permits. The third — Turms Tech, part of Turms Holdings, a subsidiary of Emcor Securities of New York — already has a construction permit and says it has built a 10 kW DRM station in New Jersey.

Turms requested callsign WIPE. It is so listed with the FCC. Turms has no license to operate this station. Yet.

The FCC is apparently not clear about whether Turms intends to use WIPE for conventional broadcasting — you know, the only type of transmission permitted under the FCC rules for such HF stations.

Turms originally told the FCC that it will engage in “broadcast and data services” and “broadcast of financial, economic news and data through distribution of programs generally prepared on the basis of requests by clients.”

Clear as mud. If broadcasting business news on shortwave to DRM receivers is profitable, you’d think that WTWW, WRMI, WBCQ, WWRB etc. would have discovered that years ago.

And what’s that about “data”? The FCC rules are plain that HFBC stations are for broadcasting to the public. There is no exemption to that requirement whether the broadcast is audio for listening or data for decoding.

So to clarify the issues, on Dec. 3, 2021 five FCC staff members asked WIPE’s consulting engineer if he could answer a few questions.

He couldn’t, at the time. Quoting from a record of that online meeting: “The information being sought was clarification of certain general non-technical items that will be possibly proposed by the pending shortwave operation. These type of items or clarifications are not normally items that this [engineering] firm would be knowledgeable.”

Presumably after consulting with his client Turms, he later provided FCC with these answers:

– – –

Q: Clarification is requested regarding the audio and data content of the general service to be provided, if known?

A: Airtime will be sold to anyone interested in broadcasting his contents. Editorial line will focus on contemporary topics, no religious or political contents. More specifically the target we’re looking for is global news and financial information, CNBC style programs.

Q: Will encryption be used in the transmitted signal?

A: No encryption will be used, this is a general broadcast.

Q. Will there be a contract for reception of the signal required?

A. No contract will be required for the reception.

Q. Will a DRM receiver be required for either or both the audio or the data?

A. A DRM receiver will be required for both audio and data.

Q. Will the proposed transmitter site receive other international HF signals to be rebroadcast on the intended operation?

A. No.

– – –

The FCC’s question about contract is especially pertinent, as the FCC considers broadcasting to require no contract between transmitting and receiving parties. A private data operation would involve such a contract, usually for some kind of subscription or other fee for service.

So what should we believe? WIPE will not engage in private data communications, but will instead pursue a sketchy business plan?

On December 23, 2021, RF engineer Alex Pilosov submitted a detailed objection — his second — to the TURMS application. According to Pilosov, “the directors and officers of TURMS do not claim any broadcasting experience, but certainly have substantial business experience, and are aware of the business of trading and data transmission.

“What TURMS claims,” he told the FCC, “is that a company without any experience in broadcasting decides to construct the first International Broadcast station in 20 years dedicated to ‘financial news’ programming, and ‘data broadcast to the general public,’ foregoing any subscription revenues, but somehow able to recoup the setup costs by broadcast operations alone.

“The second possibility, apparent from digging into the facts and associated entities, is that TURMS instead lacked candor in its filings, and that its application for ‘International Broadcast’ is merely a pretext for private data transmission business.”

If and when WIPE goes on the air — on 9.65, 11.850, 13.720 and 15.450 MHz — DRM monitoring by the SWL community should help establish the facts about any possible encrypted or otherwise non-public, non-broadcast emissions from this station.

Benn Kobb

Patricia hears a mystery signal on 7075 kHz

Many thanks to SWLing Post contributor, Patricia, who writes with the following inquiry:

I wonder if anyone has heard and identified the station or signal I heard on 7075 kHz at 0745 October 30, 2021 on my C. Crane Skywave, and I live in southern California. I would like to know where this signal originates, sounding something like a numbers station, no voice, but a whooshing sound. I have heard it may be a ham frequency or a signal from space. Any ideas?

Thanks,

Patricia G.

Thank you for your question, Patricia.

I believe what you’re hearing is the ham radio digital mode called FT8.

FT8 is a weak signal digital mode that is extremely popular in the ham radio world these days. The mode isn’t designed around relaying lengthy messages, rather it’s designed for short, very formulaic exchanges.

Each message of up to 13 characters takes 13 seconds to send. For FT8 operators to be successful, they try to keep very accurate timing on their computing device controlling the transceiver. When the whole group is coordinated well, you’ll hear groups of signal tones singing all at once in 13 second intervals with a couple seconds of space between messages.

Here’s what FT8 sounds like in SSB mode:

It’s possible it sounded quite different, however, if you were listening in AM mode.

If this doesn’t sound like what you heard, perhaps you can check the comments for any other possibilities, but my guess is it’s FT8 as it’s a pretty strong chorus of tones!

Great question, Patricia!

Radio Waves: X-Class Flare & Halloween CME, Ham Callsign History, 2/3 UK Listeners Now Digital, AM/FM Until 2030, and Rampisham’s New Plan

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!


Significant X-class solar flare (Southgate ARC)

There was a global eruption on the sun today. It started with a powerful X1-class solar flare from sunspot AR2887.

The blast created a massive tsunami of plasma in the sun’s atmosphere, which rippled across the entire solar disk. A CME is probably heading for Earth, raising the possibility of a geomagnetic storm on Halloween. More information and updates @ Spaceweather.com.

Solar Flare Alerts: Sign up for Space Weather Alerts and get instant text notifications when solar flares are underway.

History of the Ham Radio Callsign (Southgate ARC)

In this video Mike Ritz W7VO looks at the history of amateur radio call signs in the United States

Every legal amateur radio operator in the world has a unique callsign assigned to them by their government, and many of us are better known by our callsign than our given name. But what world event was it that caused these monikers to be? Why are they constructed the way they are? Continue reading

Radio Nacional da Amazonia prepares for DRM broadcasts

Photo: DRM Consortium

Many thanks to a number of SWLing Post contributors who share the following news from the DRM Consortium:

Brazil prepares for domestic DRM transmissions to Amazonia (DRM Consortium)

DRM broadcasts from a locally produced transmitter will be originated for the first time in Latin America, as Brazil will officially start digital (DRM) shortwave transmissions through The National Radio of the Amazon towards the vast area of the northern Amazon region, mainly inhabited by indigenous populations.

In another first, Empresa Brasil de Comunicação (EBC), the public broadcaster, placed the order for the high-powered transmitter with a local manufacturer, the BT Transmitters company from Porto Alegre. BT Transmitters signed a contract with EBC for the production of a 100 kW transmitter in the DRM digital system.

The equipment will be used on the 11,780 kHz frequency in the 25-meter band, which is one of the shortwave channels used by Rádio Nacional da Amazônia since 1977.

The purchase for R$3.5 million is the result of an auction held in August 2020, in which other equipment for EBC’s public radio broadcasts is planned to be acquired.

At the end of last year, Nacional da Amazônia carried out tests with the DRM technology using a transmitter of 2.5 kW with the digital power of just 1 kW.  EBC demonstrated then, for the first time in the country, the use of multi-programming and the transmission of interactive multimedia applications.

Despite this low power of the transmitter supplied by BT Transmitters, recordings were reported from different regions of the country and even from North America and Europe (Radiolab – Começam transmissões de rádio digital DRM em onda curta no Brasil).

The results of the tests were published last month by the DRM Consortium.

The DRM (Digital Radio Mondiale) standard provides power savings of up to 80% in electricity consumption, a sound quality equal or superior to FM, as well as allowing images and other data to be sent to the radio receiver.

DRM is a worldwide consortium, and more information can be found at www.drm.org.

This story was also noted in Radio World:

DRM Shortwave Will Serve Amazon Region (Radio World)

National Radio of the Amazon orders a 100 kW BT transmitter

National Radio of the Amazon plans to use DRM shortwave transmissions to serve indigenous populations in the northern Amazon region, according to the Digital Radio Mondiale Consortium.

Public broadcaster Empresa Brasil de Comunicação (EBC) ordered a 100 kW BT transmitter to broadcast in DRM at 11,780 kHz in the 25-meter band, a shortwave channel used by Rádio Nacional da Amazônia.

The purchase, valued at about $650,000 USD, was the result of an auction held a year ago for purchase of equipment for EBC public radio broadcasts.

This is believed to be the first domestic DRM installation on a locally produced transmitter in Latin America.

BBC Radio Stations Broadcasting Re-Tune Instructions

Many thanks to SWLing Post contributor, Bill Hemphill (WD9EQD), who writes:

Hi Thomas,

The BBC in their transition to digital radio has started closing some of their AM radio stations.

See following link:

https://www.bbc.co.uk/reception/work-warning/news/mw-closures-2021

The AM stations being closed are broadcasting “Re-Tune” instructions on their frequencies.

Not sure how long they will be doing this. The “Re-Tune” messages are interesting.

I have used the G4DYA KiwiSDR web receiver to listen and record some of the “Re-Tune” messages.

Most are just straight forward instructions, but Radio Hereford-Worcester on 738 has recorded individual

messages by several of their on-air personalities. The messages just loop continuously.

Attached are MP3 files for 738 Radio Hereford-Worcester, 1035 Radio Sheffield, 1341 Radio Ulster and 1503 Radio Stoke.

73

Bill Hemphill, WD9EQD

Recordings

738 Radio Hereford-Worcester

1035 Radio Sheffield

1341 Radio Ulster

1503 Radio Stoke

Thank you so much for taking the time to make these recordings and for sharing them with us here!

STARWAVES DRM SoftRadio App for Android now released

Photo by Adrien on Unsplash

Many thanks to SWLing Post contributor, Dan Srebnick, who shares the following press release from Starwaves:

STARWAVES DRM SoftRadio App for Android now available!

Good news for all SDR friends: STARWAVES DRM SoftRadio App for Android is now available for public use! Listen to DRM – Digital Radio Mondiale live radio broadcasts on your Android smartphone or tablet by simply connecting an SDR RF dongle via USB.

The app is available on Google Play Store and Amazon App Store.

The STARWAVES DRM SoftRadio allows you to conveniently enjoy any DRM live radio broadcast on your Android smartphone or tablet. No Internet connection required. All you need is an SDR RF dongle or receiver connected to your device via USB.

DRM or Digital Radio Mondiale is the global digital radio standard used for all digital international transmissions as well as for national and local services in many countries. To learn more about DRM and its features visit https://www.drm.org.

Please see our DRM SoftRadio Knowledge Base for further details!

Radio Waves: Josh reviews the Belka-DX, Sinclair Fraunhofer DRM Partnership, Clear Net Frequencies Requested, and

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 TomL, Alan, Bruce Atchison, and Troy Riedel for the following tips:


Belka DX Shortwave Receiver – Closest Thing To A Spy Radio? (HRCC via YouTube)

Sinclair Launches ATSC 3.0 Test Site; Partners With Fraunhofer On Mondiale Service Integration (ATSC)

HUNT VALLEY, Md.—Mark Aitken, senior vice president of advanced technology at the Sinclair Broadcast Group, flipped the switch on a 100w transmitter to begin broadcasting ATSC 3.0 from atop the station group’s corporate headquarters here with the express purpose of testing reception on small devices like its MarkONE 3.0-enabled smartphone and, in particular, integration of Digital Radio Mondiale (DRM) in its broadcast app.

The launch comes on the same day Sinclair and German technology research institute Fraunhofer IIS jointly announced they are working together to bring audio services using the DRM standard to ATSC 3.0. (Earlier this year, Sinclair rolled out 3.0 simulcasts of its Seattle radio stations with its DRM-based broadcast app.)

“We are actually building the DRM radio service into the [3.0] broadcast app environment,” says Aitken. “That means those [DRM] services will be carried in band and transported just like HEVC [high efficiency video coding] and [Dolby] AC-4.”[]

Clear Frequencies Requested for Net Providing 24/7 Coverage of St Vincent Volcanic Eruption (RAC Newsletter)

For immediate release:
April 20, 2021 –

The Caribbean Emergency and Weather Net (CEWN) has been providing round-the-clock coverage during the La Soufriere volcanic eruption on the island of Saint Vincent and the Grenadines.

Several neighbouring islands are also being affected by the disaster.

When responding to disasters and emergencies such as this, the CEWN utilizes 3.815 MHz LSB and 7.188 MHz LSB. CEWN is requesting that Radio Amateurs not involved in the volcano response to keep these frequencies clear.

Geomagnetic storm warning (Spaceweather.com via Southgate ARC)

A CME is heading for Earth and it could spark a geomagnetic storm when it arrives on April 25th.

NOAA forecasters say moderately strong G2-class storms are possible, which means auroras could dip into northern-tier US states from Maine to Washington.

Full story and updates @ Spaceweather.com.

 


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