SDRplay has added sample IQ files to their website

Many thanks to Mike Ladd at SDRplay who notes that they have added a new IQ Demo Files page to the SDRplay website.

Here’s the intro:

IQ Demo Files

Here you can find off air IQ recordings for you to check your SDRuno and related software settings for a variety of different situations.

If you don’t already have an RSP, because these demo files have been recorded using an RSPdx, you can get to see and hear exactly how SDRuno works in conjunction with an RSPdx. Simply download a copy of SDRuno from https://www.sdrplay.com/sdruno/ and follow the instructions below to select the WAV file input using one of the IQ files below. (Please note these are not traditional audio “WAV” files – the WAV format is used as a wrapper to contain these very large data files (100s of MBytes) containing the stream of data normally exchanged over the USB cable between RSP and computer)

If you have an RSP and are configuring software for specific types of signal decoding, we have included a number of sample IQ demo recordings you can use to check your setup before looking for real world signals.

Click here to browse the IQ files at SDRplay.com

Spread the radio love

Ron reminds us that MFJ still offers a shortwave radio kit

Following up on our recent MFJ post, SWLing Post contributor, Ron, writes:

Another thing about MFJ is they still offer the MFJ-8100 as a kit or built. This is the only regenerative receiver available as far as I know.

Mr. Jue and his guys did a couple of tweaks like limiting band coverage to insure stability, using 1/8 inch 3.5mm stereo phone jacks and use an LM386 audio IC to drive headphones or speaker.

The whole thing is in a metal enclosure to minimize hand capacitance found in most regens.

The QRP crowd likes to use the 8100 with flea power CW rigs, it’s that good.

And it’s been in production far longer than the Heathkit GR-81 or any of the Knight Kit regens, too.

Thank you for sharing that, Ron! I had completely forgotten about this little kit when someone recently asked about the availability of Ten-Tec regen receiver kits (that are, sadly, no longer on the market to my knowledge)! I might have to grab one of these kits–looks like a fun one to build.

Click here to check out the MFJ-8100K.

By the way, I also believe the NM0S Ozark Patrol regen kit is still available from the Four State QRP Group. Click here to check out the product page. It doesn’t have a metal enclosure like the MFJ, but it’s also a fun kit to build.

Spread the radio love

WHRI ceases Voice of Vietnam relays

Many thanks to SWLing Post contributor, Paul Walker, who shares the following note from Gilles Letourneau, the CIDX, and International Radio Report:

WHRI has ceased relaying Voice of Vietnam to North America since its purchase by WBCQ. Please take the time to write them and let them know it would be important to keep shortwave alive and maybe suggest they could relay via WRMI, here is the contact page
Contact | THE VOICE OF VIETNAM (vovworld.vn)

Spread the radio love

Hurricane Watch Net Activated September 13, 2020

(Source: Brad Panovich) “Smoke, Fires, a Tropical Storm, and a Hurricane all in one satellite image today.”

(Source: ARRL via RTC)

Hurricane Watch Net to Activate as Paulette Bears Down on Bermuda

The Hurricane Watch Net (HWN) has announced plans to activate today (Sunday, September 13) at 2100 UTC on both 14.325 MHz and 7.268 MHz as Hurricane Paulette is predicted to make landfall on Bermuda early on September 14 as a Category 2 storm. HWN Manager Bobby Graves, KB5HAV, noted that activation plans are subject to change as weather forecasts unfold.

As of 1500 UTC on Sunday, Hurricane Paulette was moving to the northwest toward Bermuda at about 14 MPH, with strong winds, storm surge, and heavy rain expected to begin there by evening, the National Hurricane Center (NHC) reported. A hurricane warning is in effect for Bermuda. Paulette was some 240 miles southeast of Bermuda, with maximum sustained winds of 80 MPH.

“Monday morning, after landfall, we will do what we can to gather weather data and damage reports while operating on both 20 and 40 meters,” Graves said. “Once we’ve completed operations for Paulette, we will switch gears and begin operations for Sally immediately.

The HWN will be on 20 meters during daylight hours, switching to 40 meters in the evening, although propagation could dictate going to 40 meters during daylight as well.

Tropical Storm Sally is forecast to become a Category 1 Hurricane on September 14, with landfall expected on the evening of September 15, somewhere along the coast of Mississippi.

“Of course, should the forecast track be adjusted to the left or right of the current track, landfall timing and location will change,” Graves noted. “Everyone in the forecast path of Sally should follow the directions of local emergency management.

[…]WX4NHC at the NHC will also activate on Sunday, September 13, at 2100 UTC for Paulette and Sally and will remain activated until 1900 on Tuesday, September 15, monitoring and gathering reports from the HWN on 14.325 and 7.268 MHz and via the VoIP-WX Net on Echolink WXtalk 7203 Conference and IRLP 9219.

Click here to read the full article at the ARRL News.

Spread the radio love

TuneIn ruling may lead to a more restrictive future for UK smart speaker and Internet radio users

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

I live in the UK and, like many of your readers and contributors, one of the aspects of the radio hobby I enjoy is ‘content DXing’. As of yesterday [September 9, 2020], all of the US-based classical music stations and even some European news outlets are no longer available through TuneIn.

This appears to be because of a court ruling which identifies TuneIn as a ‘broadcaster & communicator’ rather than – as TuneIn itself claims – an indexer of available stations.

I’m assuming Direct Streams from each station are still available but I can’t help but worry that station aggregators might also be in the firing line at some stage.

Thank you for sharing this, David.

Implications Beyond TuneIn?

At first blush, one might think this ruling only applies to TuneIn users, but it certainly sets the stage for further law suits since TuneIn isn’t the only “audio guide service” accessible in the UK.

Check out this article David shared from November 2019 when the ruling originally took place:

In 2017, Sony and Warner sued US-based radio service TuneIn, claiming the company infringed its copyrights in the UK. A judgment handed down today by the High Court states that while TuneIn does not offer content itself, the provision of hyperlinks to content not officially licensed in the UK constitutes a communication to the public and is therefore infringement.

TuneIn is one of the most prominent and recognizable providers of radio content in the world.

Available for free or on a premium basis, the service offers access to well over 100,000 radio stations and millions of podcasts. It doesn’t provide this content itself but acts as an indexer (“audio guide service”, according to TuneIn) for those looking to access third-party streams.

In 2017 it emerged that Sony Music UK and Warner Music UK had sued the US-based company in the UK, claiming that since many of the TuneIn-indexed stations are unlicensed to play music in the region, linking to them amounts to infringement of the labels’ copyrights.

Today, the High Court of England Wales handed down its decision and it doesn’t look good for TuneIn. The judgment begins by stating the opposing positions of the labels and TuneIn, which are particularly familiar in these types of disputes concerning hyperlinking.

“The claimants say that a finding for the defendant will fatally undermine copyright. The defendant says that a finding for the claimants will break the internet,” Justice Birss writes.

The labels argued that TuneIn needs a license, an assertion “strongly disputed” by TuneIn. The company argued that it does not “store any music, and merely provides users of TuneIn Radio with hyperlinks to works which have already been made freely available on the internet without any geographic or other restriction.”

In other words, TuneIn presents itself as not unlike Google search but instead of indexing websites, it indexes and links to radio streams. However, Justice Birss declared the service to be “much more than that”, in part due to its curation and search features.

“I find therefore that the activity of TuneIn does amount to an act of communication of the relevant works; and also that that act of communication is to a ‘public’, in the sense of being to an indeterminate and fairly large number of persons,” he writes.[]

Indeed, this is essentially what all station aggregators do: they index, curate, and make streaming audio content readily available via Internet media devices like WiFi Radios.

While most WiFi radio station aggregators don’t have the app and web browser-based following and popularity of TuneIn, they do offer the “curation and search features” which lead Justice Birss to side with Sony and Warner.

UK Sonos Users Affected

David also points out complaints from Sonos users in the UK who have been directly affected by the TuneIn ruling. One Sonos owner commented:

Dear Sonos: can you see the enormity of the damage that’s been inflicted to your product? A major feature of the product has been devalued – at least for UK customers. Internet radio is 90% of what I use Sonos for; 80% of my listening is non-UK. Stopped working overnight. And you seem to be just as surprised as I am. How come you didn’t see this coming? You send me an email whenever you have something new to sell. Why didn’t you send me an email to warn me that this predictable event was going to hit me? You don’t seem to have a mitigation plan. You don’t have a how-to-workaround or this-is-what-we-are-doing-to-fix-it article in an prominent place on your web site.

Note that it’s not only TuneIn that’s now broken but also Sonos Radio. “Sonos Radio is an Internet radio service, exclusively available on Sonos. It features 60,000 radio stations from around the world”, it says on the tin. No it doesn’t anymore. They are still all there but they don’t work when you click on them.

From Sonos’s vantage point, TuneIn may be a separate entity. But that’s irrelevant from my point of view. I want the functionality that the product promises.

OK there may be some workarounds. I’m sure I’ll find them. But the fact remains that a major feature of the product no longer “just works”. It can still be “made to work”, but that takes a certain level of cyber-literacy.

I’m willing to bet UK users of other streaming media devices and smart speakers–especially devices from companies who aren’t in the business of directly streaming copyrighted music–will eventually have a smaller selection of international content.

Is there a work around?

Surely. But it could require heavy use of a VPN or similar service to trick TuneIn, Sonos, or other Internet devices into believing they’re physically located outside the UK. This may only be a temporary fix, however. Both Netflix and Amazon Video streaming services, for example, began effectively blocking most of the major VPNs a few years ago.

Have you been affected?

To be clear: I’m no expert in streaming media law, so what I’ve presented here are the basics and user reports. These are my own opinions and assumptions about where this ruling could lead.

If you live in the UK and have been directly affected by this ruling, we’d appreciate your comments.

Spread the radio love

Radio Waves: BBC radio reporters axed, Ham Radio on BBC Surrey, K6UDA on IC-705 features, and VLF balloon launched with request for detailed reception report

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 Mark Hist, Kris Partridge, John Palmer, and the Southgate ARC for the following tips:


Radio reporters to be axed by BBC and told to reapply for new roles (The Guardian)

Radio reporters to be axed by BBC and told to reapply for new roles
Critics fear end of an era because of plans to make audio journalists work across media platforms

BBC radio voices have described and defined modern British history. Live reports from inside a British bomber over Germany during the second world war, or with the British troops invading Iraq in 2003, or more recently from the frontline of the parent boycott of a Birmingham school over LGBT lessons have also shaped the news agenda.

But now the BBC plans to axe all its national radio reporters and ask them to reapply for a smaller number of jobs as television, radio and digital reporters, rather than as dedicated audio journalists. Many fear it is not just the end of their careers but the premature end of an era for the BBC.

“Radio reporting is a different job. Of course, you can do both, but a report designed for television starts from a completely different place. Radio is also more agile and also a lot less expensive,” said one experienced broadcast journalist. “I am pretty sure most of us will not be given new TV roles. It seems sad to lose all that specific radio expertise.”

Among the well-known voices likely to be affected are Hugh Sykes, Andrew Bomford – who has just completed a long feature on the child protection process for Radio 4’s PM show – and the award-winning and idiosyncratic Becky Milligan, as well as a wider team of expert correspondents.[]

Amateur radio on BBC Radio Surrey (Southgate ARC)

RSGB report Board Director Stewart Bryant G3YSX and SOTA organiser Tim Price G4YBU were interviewed on BBC Radio Surrey on Friday, September 11

The interview starts just before 1:43:00 into the recording at
https://www.bbc.co.uk/sounds/play/p08pkykw

RSGB https://twitter.com/theRSGB

What is Amateur Radio?
http://www.essexham.co.uk/what-is-amateur-radio

Free UK amateur radio Online Training course
https://essexham.co.uk/train/foundation-online/

10 Things That Make The Icom IC 705 A Revolution in Ham Radio (K6UDA YouTube)

 

VLF Balloon with 210m long antenna launches Sept 12 (Southgate ARC)

A high-altitude balloon experiment, launched by Warsaw University of Technology, is planned to lift off September 12, carrying a VLF 210-m-long fully-airborne antenna system, transmitting on 14.2 kHz

14.2 kHz is the former frequency of the Babice Radio Station in Poland.

The project is delivering very important data for a doctoral dissertation – any and all feedback on the reception of the signal (reception location, SNR, bandwidth etc.) is extremely important; your help with the listening to the transmission would be invaluable!

The balloon will also be transmitting APRS on 144.800 MHz FM, callsign SP5AXL.

Full details at
https://alexander.n.se/grimetons-sister-station-shall-reappear-in-the-stratosphere/?lang=en


Kris also points out this article which provides more detail about the station and request for reception reports:

Invented for the first time in 2014, in 2020 it will finally be implemented – the idea of „restoring” the TRCN, but in the stratosphere, where there are no mechanical limitations at the height of the antennas, and the achieved range can be gigantic.

The launch of a stratospheric balloon from the Przasnysz-Sierakowo airport of the Warsaw University of Technology is planned for September 12, 2020, in order to perform atmospheric tests – measuring UV radiation, recording the cloudy surroundings with a high-speed camera and conducting an inductive experiment at 14.2 kHz using a special antenna system.

The inductive system uses a modified long-wave transmitter (A1 emission, unkeyed) from the GLACiER project of the Warsaw University of Technology, implemented as part of the IGLUNA – a Habitat in Ice programme (ESA_Lab / Swiss Space Center). The power of the transmitter, due to the emission limits for this type of inductive devices, shall not exceed a few watts. The antenna system is a centrally fed (35: 1) dipole with capacitive (Hertzian) elements and a vertical axial coil. The electrical length is between 400 and 500 m, with a total system length of 210 m. The antenna is equipped with metalized radar reflectors.

The entire balloon mission will use 144.8 MHz (as SP5AXL) and 868 MHz (as part of the LoVo system) for navigation. Flight information will be available in advance in NOTAM (EPWW).
Planned balloon launch (even if the sky is full of ‘lead’ clouds) at 12.00 UTC (14.00 CEST, local time). The 14.2kHz experiment will be switched on on the ground, with the antenna initially folded in harmony. The predicted total flight time is 3 hours – around 13.30-14.00 UTC / 15.30-16.00 CEST it is planned to reach the maximum altitude of 30 km above sea level.

Source: https://trcn.pl/do-stratosfery-to-the-stratosphere/

How can you help with the experiment? By recording as much as possible! Every parameter is valuable – from the spectrum / screenshot with the spectrum, to the EM field strengths, SNR and bandwidth, to the change of the EM field strength over time. The collected data can be sent to our e-mail address: [email protected]. On the day of launch, we plan to post updates on the launch, flight and the experiment itself via our Facebook page: facebook.com/radiostacjababice.
Stay tuned!


Do you enjoy the SWLing Post?

Please consider supporting us via Patreon or our Coffee Fund!

Your support makes articles like this one possible. Thank you!

Spread the radio love

Richard logs shortwave pirates WDOG and Radio Station EFP

Many thanks to SWLing Post contributor, Richard Lacroix, who shares the following:

First off, thank you goes out to John Hudak’s timely post on the ODXA group. Shortly after his post, I was able to quickly tune-in and intercept 2 pirate radio stations on September 5 2020 during the period 00:30 to 02:17 UTC.

John’s post read:

“Pirate station WDOG is on 5060kHz. USB right now as I write this – 0027UTC Sept. 5, 2020 (8:27 p.m. EDT Fri. Sept. 4). Fairly good signal, playing various rock and pop songs. Frequent ID’s between songs and sound of dog barking.”

There were in actuality 2 sequential broadcasts. The first from WDOG on 5060.0 kHz USB from an unconfirmed start time until sign-off with “Star-Spangled Banner” played by Jimi Hendrix at Woodstock at 01:53 UTC.

The second broadcast followed suite by Radio Station EFP, as well on 5060.0 kHz, but this time in AM mode. Radio Station EFP continued to broadcast until approximately 02:17 UTC after which it started to exhibit deep signal path fades and eventually went off-air at 02:17:40 UTC.

Armed with the combination of devoted listeners posting reception reports and a radio always at the ready, this made for a very exciting 2 hours of SWL.

Included is a 10 minute audio compilation for everyone to enjoy which I stitched together from the 2 plus hours of off-air broadcast recording I saved:

This is brilliant, Richard! Thank you so much for sharing your notes and recording.

I haven’t done nearly enough pirate radio listening this summer. Your timely report reminds me it’s time to change that! Arrrrr!

Spread the radio love