Monthly Archives: September 2017

The GR-227: Gospell introduces a new SDR digital radio car adaptor

Radio exhibit at the Tate Modern

Photo credit: Rebecca Crysdale

Many thanks to SWLing Post contributor, Ed, who writes:

An old friend of mine just emailed me from London after seeing an extraordinary modern art exhibit at Tate Modern. The exhibit, according to my friend Rebecca Crysdale, “is about how we are being overload by communications, particularly digital communications.” She says, “It was a very thought provoking exhibit.”

Photo Credit: Rebecca Crysdale

[H]ere’s a link to Tate Modern’s web page for the exhibit. There appears to be lots of shortwave and other radios in these large sculptures, and SWLing Blog readers might enjoy trying to identify them. http://www.tate.org.uk/art/artworks/meireles-babel-t14041

Many thanks Ed and Rebecca for sharing! I just checked out the Tate Modern site–brilliant installations! I love the Tate Modern, but have never had the fortune of seeing a radio-centric exhibition. Amazing!

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Radio World: Preserving Podcasts

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(Source: Radio World via Richard Langley)

Radio World supports efforts to save our radio and audio heritage, including the work of the Radio Preservation Task Force,?a project of the Library of Congress.

Here is one in a series of guest commentaries about the topic.

Jeremy Morris is an assistant professor in the Department of Communication Arts at the University of Wisconsin-Madison.

In January 2014, Adam Curry sent a quick tweet out to his 40,000-plus followers with a modest request: “Looking for a full archive of ‘Daily Source Code’ mp3s.” Not just your average media user looking for bootlegged files, Adam Curry was one of podcasting’s first breakout stars in the early 2000s. He was trying to track down one of the first widely popular podcasts, the “Daily Source Code.” But his request was certainly odd; after all Curry was actually the host and producer of the “Daily Source Code,” which ran from 2004 to 2013 (over 860 episodes!).

As Curry lamented on his website: “For a number of [stupid and careless] reasons, I am not in posession of most of these.” [sic]

For those familiar with radio history, this story is probably less surprising. Much of radio’s history has been lost to vagaries of time, be it through the willful ignorance of companies looking to “preserve” only that which could be “monetized,” or the unintentional negligence of hosts, producers and engineers without the foresight, budgets or means to realize that the radio they were making and broadcasting would shape culture for decades to come — culture that media historians, scholars and hobbyists would later want to analyze, research, teach and reference.[…]

Click here to read the full article at Radio World.

Thank you–as Richard knows, podcasting is the distribution method behind our Shortwave Radio Audio Archive. It’s an ideal platform for delivery of recorded broadcasts–listeners subscribe and then maintain their own local copy of the entire archive. Podcasting applications can insure that any new episodes are downloaded automatically.

This year, I will represent the Shortwave Radio Audio Archive at the Radio Preservation Task Force meeting at the Library of Congress. I very much look forward to the event and meeting others in the radio archives world.

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1296 kHz: Help Andy identify this 1970s/80s mediumwave broadcaster

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Many thanks to SWLing Post contributor, Andy (G0FTD), who writes:

Back in the 1970’s, there was a rather strange medium wave transmitter on
1296Khz. Originally I think it was in Sussex, and then changed to Orfordness
in Suffolk UK.

It was a weird thing.

I think it was “owned” by the UK’s Diplomatic Wireless Service, not the BBC.

It seemed to be fairly random in its transmissions, and often sent the letter
V in a strange bong-bong-bong-BONG! loops for hours.

Programmes were English by Radio, and a seemingly random mix the BBC World
Service, and BBC Radio 1 (I think).

It slso had a creepy signature tune for the English by Radio programme,
and the modulation had an odd tinge to to it, like it was slightly over modulated.

At some time (the 80’s), I think it’s QTH changed, and the pause between the
letter V being sent was shortened from about 3 seconds to 1 second.

I understand that it had a sharp antenna beam, towards easter Europe, and
was not widely heard in the UK. Those of us that lived in the south east
of the UK could of course hear it off the back of it’s beam.

I’ve never ever seen it mentioned on any radio forums, no archive recordings
seem to exist of these creepy English by Radio them tunes or programmes,
or any off air recordings.

Saying that, I did come across a studio copy of the interval signal, but no
details about it. (But I knew what it was).

Click here to download MP3.

Sometime about 1995 I think it might have been mothballed, and lays ready
for possible future use should there be a need to by the DWS.

If you can help Andy identify, or at least provide more information about this station, please comment! I would love to know about this broadcast service myself.

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Relive This Day In Radio History: When WJSV recorded an entire broadcast day

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Many thanks to SWLing Post contributor, Bill Patalon, who reminds us that 78 years ago today (September 21, 1939) radio station WSJV made an audio recording of its entire 19 hour broadcast day. Bill points to these details from Wikipedia:

This undertaking was a collaboration between the station and the National Archives, and it was the first time that such a comprehensive recording of a radio broadcast had been made. The station then donated its original set of recording discs to the National Archives, giving it a rare and complete artifact from an era frequently called the Golden Age of Radio. Due to their historical significance, the United States Library of Congress has since added these sound recordings to its National Recording Registry.

https://www.radioarchives.com/WJSV_A_Day_in_Radio_History_p/ra140.htm

Let’s travel back in time…

If you would like to relive September 21, 1939, you can listen to all of the WSJV recording segments courtesy of Archive.org. I’ve embedded the full playlist below–simply press play at the top of the player and each segment will load automatically as long as this page is open. Note that in the very first segment, due to a WSJV equipment glitch, there is a period of silence. Enjoy:

Click here to view or download the full set of recordings on Archive.org.

Many thanks for sharing this bit of radio history, Bill! As a radio archivist, this sort of thing makes my day.

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BBC World Service: new shortwave services to Ethiopia and Eritrea

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Note that, in terms of press freedoms, Reporters Without Borders ranks Eritrea the second most repressive country in the world, next to North Korea.

(Source: BBC Media Centre)

BBC World Service continues expansion with new services for Ethiopia and Eritrea

Three new language services for Ethiopia, Eritrea, and the diaspora are being launched today by the BBC World Service as part of its biggest expansion since the 1940s.
BBC News in Amharic, Afaan Oromo and Tigrinya will be available online and on Facebook. This will be followed later in the year with shortwave radio services in each language consisting of a 15-minute news and current affairs programme, followed by a 5-minute Learning English programme, from Monday to Friday.

The new BBC services will provide impartial news, current affairs and analysis of Ethiopia and Eritrea as well as regional and international news. Boosting the BBC’s operation in the Horn of Africa will also provide the rest of the BBC’s global audience with a better understanding of Ethiopia and Eritrea.

Programmes will target a younger audience with social media playing a key role. In addition to news and current affairs, there will be extensive coverage of culture, entertainment, entrepreneurship, science & technology, health and sport – including the English Premier League.

These services will benefit from a growing network of journalists across the region and around the world.

Francesca Unsworth, BBC World Service Director, says: “The BBC World Service brings independent, impartial news to audiences around the world, especially in places where media freedom is limited. I’m delighted we’re extending our service to millions of people in Ethiopia, Eritrea and the diaspora worldwide.”

Will Ross, Editorial Lead for Africa, says: “We know that there is a great deal of hunger for audiences in Ethiopia and Eritrea to access a broad range of high quality content in Amharic, Afaan Oromo and Tigrinya. It has been a privilege to work with Ethiopian and Eritrean journalists who are so keen to learn new skills and to ensure the new language services are a success.”

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Servosila develops a robot with onboard SDR package

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(Source: Servosila Press Release)

Servosila introduces a new member of the family of Servosila “Engineer” robots, a UGV called “Radio Engineer”. This new variant of the well-known backpack-transportable robot features a Software Defined Radio (SDR) payload module integrated into the robotic vehicle. Servosila introduces a new member of the family of Servosila “Engineer” robots, a UGV called “Radio Engineer”. This new variant of the well-known backpack-transportable robot features a Software Defined Radio (SDR) payload module integrated into the robotic vehicle.

“Several of our key customers had asked us to enable an Electronic Warfare (EW) or Cognitive Radio applications in our robots”, – says a spokesman for the company, “By integrating a Software Defined Radio (SDR) module into our robotic platforms we cater to both requirements. Radio spectrum analysis, radio signal detection, jamming, and radio relay are important features for EOD robots such as ours. Servosila continues to serve the customers by pushing the boundaries of what their Servosila robots can do. Our partners in the research world and academia shall also greatly benefit from the new functionality that gives them more means of achieving their research goals.”

Coupling a programmable mobile robot with a software-defined radio creates a powerful platform for developing innovative applications that mix mobility and artificial intelligence with modern radio technologies. The new robotic radio applications include localized frequency hopping pattern analysis, OFDM waveform recognition, outdoor signal triangulation, cognitive mesh networking, automatic area search for radio emitters, passive or active mobile robotic radars, mobile base stations, mobile radio scanners, and many others.

A rotating head of the robot with mounts for external antennae acts as a pan-and-tilt device thus enabling various scanning and tracking applications. The neck of the robotic head is equipped with a pair of highly accurate Servosila-made servos with a pointing precision of 3.0 angular minutes. This means that the robot can point its antennae with an unprecedented accuracy.

Researchers and academia can benefit from the platform’s support for GnuRadio, an open source software framework for developing SDR applications. An on-board Intel i7 computer capable of executing OpenCL code, is internally connected to the SDR payload module. This makes it possible to execute most existing GnuRadio applications directly on the robot’s on-board computer. Other sensors of the robot such as a GPS sensor, an IMU or a thermal vision camera contribute into sensor fusion algorithms.

Since Servosila “Engineer” mobile robots are primarily designed for outdoor use, the SDR module is fully enclosed into a hardened body of the robot which provides protection in case of dust, rain, snow or impacts with obstacles while the robot is on the move. The robot and its SDR payload module are both powered by an on-board battery thus making the entire robotic radio platform independent of external power supplies.

Servosila plans to start shipping the SDR-equipped robots to international customers in October, 2017.

Web: https://www.servosila.com

YouTube: https://www.youtube.com/user/servosila/videos

About the Company

Servosila is a robotics technology company that designs, produces and markets a range of mobile robots, robotic arms, servo drives, harmonic reduction gears, robotic control systems as well as software packages that make the robots intelligent. Servosila provides consulting, training and operations support services to various customers around the world. The company markets its products and services directly or through a network of partners who provide tailored and localized services that meet specific procurement, support or operational needs.