Category Archives: Current Events

August 28: BBC Atlantic Relay station special DRM broadcasts

RNZI-DRM-2(Source: DRM Consortium)

DRM will be part of a big anniversary on a small island in the Atlantic Ocean. On 28th of August at 1155 GMT Babcock International will ensure a special BBC digital transmission on 21715 kHz from the BBC Atlantic Relay station, marking the fiftieth anniversary of the BBC’s first short-wave radio broadcast from Ascension Island.

Since 1966, the Atlantic Relay station has broadcast BBC World Service programmes to Africa and South America, and to this day, continues to broadcast over 250 programme hours every week to East and West Africa in English, French, Hausa and Somali.

BBCRelayStation-Ascension IslandThe two hour-transmission on 21715 kHz will start with the old, special sound of Bow Church Bell in east London, the sound of which, even if in DRM this time,  will remind older listeners of the BBC broadcasts of many decades ago. The 21-hour transmission will be the regular BBC programmes for West and South Africa and will end at 1400.

DRM – Digital Radio Mondiale, is an international digital radio standard designed by broadcasters, for broadcasters, in co-operation with transmitter and receiver manufacturers. DRM is a high quality digital replacement for analogue radio broadcasting in the AM and FM bands.

This special transmission will be sent with greetings from Ascension Island’s BBC and Babcock International staff and visitors, who will be celebrating half a century of sterling broadcasting on August 28th.

Click here to read more about the fascinating history of the BBC’s broadcasts from Ascension Island.

Transmission Details

FREQ   TIME (UTC)       SERVICE          TX        kW       Bearing Day      LANG               TARGET

21715   1155-1201         BBC DRM         ASC     250       114       1          English             S. Africa           (Special Announcement)

21715   1201-1400         BBC DRM         ASC     250       114       1          English             S. Africa            (English – ENAFW)

21715   1400-1430         BBC DRM         ASC     250       250       1          English             Brazil                (English – ENAFW)

Additional analogue transmission will broadcast from 13.30 GMT for ceremonial purposes.

15105   1330-1430         BAB                  ASC     250       27         1          English             W. Africa                   (Special Announcement)

Grimeton Radio / SAQ Transmission on July 3rd

(Source: The Alexander Association)

Reminder of Grimeton Radio / SAQ Transmission

Alexanderson alternator in the SAQ Grimeton VLF transmitter.

Alexanderson alternator in the SAQ Grimeton VLF transmitter.

The annual transmission “Alexanderson Day” with the Alexanderson alternator on VLF 17.2 kHz with the call SAQ will take place Sunday, July 3rd, 2016 at 09:00 UTC (tuning up from after 08:30 UTC) and will be repeated at 12:00 UTC (tuning up from after 11:30 UTC).

Amateur Radio Station with the call “SK6SAQ” will be QRV on the following frequencies:
– 7.035 kHz CW or
– 14.035 kHz CW or
– 21.035 kHz CW or
– 3.755 kHz SSB

Two stations will be on the air most of the time.

QSL-reports to SAQ and SK6SAQ are kindly received via:
– E-mail to:
– or via: SM bureau
– or direct by mail to: Alexander – Grimeton Veteranradios Vaenner,

Grimeton 72

Also read our website:
The station will be open to visitors.


Lars Kalland / SM6NM

Free SDRuno webinars this weekend


Many thanks to SWLing Post contributor, Mike (K8RAT), who writes:

According to the SDRplay blog they will be hosting a series of Webinar events centered around the RSP and SDRuno. Starting this Saturday.

From Jon Hudson on SDRplay’s Facebook page:

We will be hosting a series of Webinar events centred around the SDRplay RSP and SDRuno. These events will be streamed live, but will also be recorded and hosted on our website for those that are unable to attend.

The first event is scheduled for this Saturday (2nd July) at 16:00 UTC – we will give some background to SDRuno and explain it’s core functionality and what the future holds for its development. It will be fairly informal and interactive, we will try to answer as many questions as we can. We will try to stick to a timeframe of about 45 minutes to 1 hour maximum.

You will be able to view the broadcast here:

If you would like to contribute to the text chat discussion, you will need to signup with an account here:

If this proves to be of interest and value, we’ll schedule some more with special guests to go through specific real world use cases with the RSP and SDRuno

Jon (SDRplay )

Listening across the globe: 2016 BBC Antarctic Midwinter Broadcast!


On Tuesday, 21 June 2016, the BBC World Service officially transmitted the 2016 BBC Antarctic Midwinter Broadcast–an international radio broadcast intended for a small group of scientists, technicians, and support staff who work for the British Antarctic Survey.

This is one of my favorite annual broadcasts, and I endeavor to listen every year. Once again, the SWLing Post called upon readers to make a short recording of the broadcast from their locale.

Below are the entries, roughly organized by continent and country/region, including reader’s photos if provided. I had planned to post these recordings by Sunday, but my travels interfered and I discovered an additional ten recordings in my inbox! (If I’ve somehow missed including your entry, please contact me; I’ll amend this post.)

So, without further ado….

The 2016 BBC Antarctic Midwinter Broadcast Recordings


SWL (Shortwave Listener): Rob Wagner
Location: Mt Evelyn, Victoria, Australia
Notes: [A] 12 minute video record of the broadcast that also demonstrates some tuning techniques and DSP facilities on the Yaesu FTDX3000. You can view the video below or by clicking here:

Paul's Icom IC-7300 tuned to the BBC Midwinter broadcast.

Paul’s Icom IC-7300 tuned to the BBC Midwinter broadcast.

SWL: Paul Philbrook
Location: Adelaide, South Australia
Notes:  Here are a couple of recordings from this mornings broadcast. Just had a quick listen before heading off to work and recorded these two with the IC-7300. Radio: Icom IC-7300 Aerial: Multi-band loaded dipole. 5985 Khz strength 5 readable, 6035 Khz strength 8 good readability, 7360 Khz no copy.

Click here to download recording 1 and recording 2, or simply listen via the embedded players below:

New Zealand

SWL: Bryan Clark
Location: Mangawhai,  New Zealand
Notes: Listening in New Zealand, reception was not as good as last year.
Here are short audio files of the 3 frequencies. I used an EWE antenna aimed southeast, that is across South America, for the best signals. Receiver is a WinRadio Excalibur Pro SDR.

7360 kHz recording:

6035 kHz recording:

5985 kHz recording:




Christoph Ratzer

SWL: Christoph Ratzer
Location: Salzburg, Austria
Notes: Here my complete recording for you. Received at my remote station in Salzburg, WinRadio G33 Excalibur PRO, Delta loop antenna with Bonito ML052 amplifier.

Christoph's Delta external loop antenna

Christoph’s Delta external loop antenna

Click here to download the recording, or simply listen via the embedded player below:


SWL: Willy Andersen
Location: Soeborg, Denmark
Notes: Here is my recording from 7360kHz on June 21. 2016. Very strong and clean signal. Vy 73 de Willy, OZ4ZT

Click here to download the recording or simply listen via the embedded player below:



SWL: Philippe
Location: L’Hôpital-Camfrout, France (few km south of Brest)
Notes: Very good conditions here, good sound. Equipment: Yaesu FT817ND + V inverted antenna and Yaesu Vx7r + original antenna (little stick on the radio). On both radios, reception: 59 / 59+

20160621_234515 20160621_234327

Google map link to the city.

YouTube video of 5985 kHz broadcast.

YouTube video of 7360 kHz broadcast.


SWL: Alan
Location: County Kildare, Ireland
Notes: 5,985 kHz Woofferton. Distance: 280km. Recorded from County Kildare, Ireland
with an Icom-718 and 20m Random wire on an Olympus vn-741pc.

Click here to download the recording as an MP3, or simply listen via the embedded player below:


Renato Feuli's (IK0OZK) staion

Renato Feuli’s (IK0OZK) staion

SWL: Renato Feuli (IK0OZK)
Location: Valentano, Italy
Notes:  Woofferton at 5.895 Khz AM
Time UTC 21.33
Signal Report R/S R5 S 9+15 Db Very Good signal and audio
RTX JRC 245 and Windom antenna

To Ascension at 7.360 Khz AM
Time UTC 21.33
Signal Report R/S R5 S 9+10 Db Very Good Signal and audio
Receiver JRC NRD 545 Dsp and Long-Wire antenna

Click here to watch video via YouTube.

Woofferton and Ascension at 21.45 UTC:

Click here to watch video via YouTube.

To Dhabayya at 6.035 Khz AM
Time UTC 21.38
Signal Report R/S R3 S 4/5 Low Signal and many QRM and QSB
Receiver JRC NRD 91 and Long-Wire antenna

Click here to watch video via YouTube.

Below, please find an audio file for Ascension at 7.360 Khz AM 21.40 UTC:

Please check out Renato’s radio blog by clicking here.

SWL: Joseph
Location: Ponza island, Italy
Notes: I am Joseph in Ponza island, Italy, with pleasure I send you a video of the Antarctic Midwinter 2016 recorded yesterday night with my old smartphone … great about the 5985 and 7360 frequencies, very poor reception on 6035, I used the 3 receivers Yaesu vr5000 connected on a discone antenna “Midland full band”, AOR ar 3030 and Kenwood R1000 on antenna “Mini Whip”.

Click here to watch via Vimeo.


SWL: Davide Borroni
Location: Saronno, Italy
Notes: 21 June 2016 at 2130-2200 UTC on 7360 KHZ AM. I listened to the BBC broadcast with SINPO 54444. I listened to beautiful music and talk. Thanks for show !  I used my R&S ESH3 (see above) with my magnetic loop 2 meter diameter antenna.

Click here to download the recording, or simply listen via the embedded player below:

David also included the following videos featuring his Siemens E401 and Racal RA 1778:


SWL: Alessio Proietti
Location: Rome, Italy
Notes: Receiver: Yaesu FRG 7700 Antenna, 10mt rybakov, Frequency: 5985 kHz AM, Details: nice reception today S9+40 with a light QSB.

Click here to download the recording, or listen via the embedded player below:

SWL: Andrea Borgnino
Location: Rome, Italy
Notes: BBC Antarctic Midwinter Broadcast 2016 – 5985 khz 21/6/2016 recorded in Roma Italy. Click here to listen on SoundCloud.

SWL: Adalberto Maria Tassi
Location: Rome, Italy
Notes: 5985 kHz, SINPO 55544, Icom IC-R71e, Antenna: Wellbrook ALA-1530

Click here to view the video on Vimeo.

Screenshot from Marc's SDR.

Screenshot from Marc’s SDR.

SWL: Marc Vittorini
Location: Favria, Italy
Notes: Frequency of 5985 KHz, SINPO 43333, Receiver RTL Dongle +, SDRSHARP, Antenna: homemade longwire

Click here to download or simply listen via the embedded player below:

BBC Midwinter Antarctic B.

SWL: Gabriele Somma
Location: Roccapiemonte province Salerno, Italy
Notes: Frequency 5.985 Khz AM, S.I.N.P.O SIGNAL S9+30+,

Receiver Icom PCR 1500:


Antenna ALA 1530 LN:


Gabriele includes the following video of his IC-PCR1500 tuned to the broadcast:

SWL: Rotunno Vincenzo
Location: Italy
Notes: I0550/RM, 5.985.00 MHz AM, Sr 59+40, Kenwood ts 870 ant random

Click here to view on Vimeo.

Northern Ireland

SWL: Jordan Heyburn
Location: Northern Ireland

BBC World Service Special Broadcast to Antarctica 5985khz received in Northern Ireland using a SDR Play RSP & Wellbrook ALA1530LN Active Loop Antenna. Click here to view on YouTube.


SWL: Chris Ditrich
Location: Poland
Notes: Reception on 5985 kHz and 7360 kHz was very good 59 – 58, however reception on 6035 kHz was not that good, signal was there but not much readable

5985 kHz

Click here to listen via YouTube.

Click here to view on YouTube.

7360 kHz

Click here to view on YouTube.


SWL: Dmitry Elagin
Location: Saratov, Russia
Notes: I accepted BBC Antarctic Midwinter Broadcast in Saratov, Russia. I made video record by means of my SDRPlay.

Click here to view on Vimeo.

I also listened to the test program on June 14.
I published my supervision here –

[Dmitry also included the following YouTube video:

United Kingdom

SWL: Chris Inwood
Location: Conrwall, England
Notes: [R]ecorded on 5.985 MHz. This frequency was by far the best quality. I was able to copy 7.365 here but there was slight QSB and some interference from an adjacent broadcaster HCJB. 6.035 was not heard at all neither was 9.720 MHz. Very best wishes and thanks, I always look forward to my email.

Click here to download the MP3, or simply listen via the embedded player below:

Mark Hirst's listening post.

Mark Hirst’s listening post.

SWL: Mark Hirst
Location: Basingstoke, Hampshire
Notes: Thanks for alerting shortwave listeners to the British Antarctic Survey broadcast. It felt very poignant listening to a broadcast aimed at such a small number of people, with the voices of their loved ones being launched around the world.

I was able to record the broadcast from only 100 miles away from the Woofferton transmitter, so needless to say the quality and strength was very good. I imagine hearing that broadcast buried in the noise from far away with those happy birthday songs and best wishes must have been very emotional for its intended audience.

I enclose a short segment from my 30 minute recording, plus a photo (above) taken the next day of my set up (it was dark at the time of the recording).

My recording location was Basingstoke, Hampshire in the UK – locator IO91LH 20HH

[Note that Mark also recorded the full 30 minute broadcast which you can download by clicking here.]

SWL: Dean Allison
Location: Bedlington, Northumberland, England
Notes: I have attached an audio file of the BBC transmission to Antarctica. My location is Bedlington, Northumberland, England, about 100 feet above sea level, using a Kenwood R5000 receiver and a 30 feet longwire antenna about 12 feet off the ground. This was the 5985 kHz transmission.

Click here to download or simply listen via the embedded player below:

SWL: Jerry Rhys
Location: Surrey, England
Notes: Attached are two recordings of today’s BBC Antarctic Broadcast made between
2130 and 2150z. The first recording was made using AM mode with 8 kHz bandwidth on 5985 then 7360, followed by 6035. The second recording was made using SAM mode with 10 kHz bandwidth on 7360, 6035, and 5985.

The best signal was on 5985, 7360 was weak but readable, on 6035 I could detect a carrier and occasional modulation – on this frequency there was also interference from a digital transmission on 6037. Nothing heard on 9720.

I was using a RF Space SDR-IQ Receiver, and a Wellbrook ALA1530S Loop
Antenna installed in my loft. Many thanks for the SWLing Post, always an enjoyable read!

Recording 1: 

Recording 2:

SWL: Alan (G4TMV)
Location: northern England
Notes: Reception of this special broadcast was excellent here in northern England on 5985 kHz. It was an enjoyable broadcast again, but Babcock weren’t wasting any electricity on it, it came on and went off again almost spot on 2130 and 2200!

Click here to download, or simply listen via the embedded player below:

SWL: Dom B
Location: Newcastle Under Lyme, England
Notes:  I live streamed the midwinter broadcast on my Tecsun PL-380 from my location in Newcastle Under Lyme in the UK

Here is the link:

SWL: Lawrence Beedle
Location: Manchester, England
Notes: Here is my recording of the mid winter broadcast by the BBC 21st June 2016. Tecsun PL660 telescopic aerial, indoors, sat at kitchen table in a house in Manchester, England, UK. 5985khz good reception. 6035 kHz not as strong, 7360 kHz no reception. Recorded on iPhone next to speaker on radio. 36 seconds.

Click here to download the MP3, or simply listen via the embedded player below:


David’s (G4EDR) listening post.

SWL: David Mappin
Location: Filey, England
Notes:  Just thought I would let you know how I got on with the BBC WS broadcast to Antarctica. I used my Icom IC-R75 receiver and a Wellbrook ALA1530 inside the house. 5985 kHz was very strong with me here on the east coast of the UK (NVIS propagation?). Nothing heard on 6035 or 9720 but a weak signal on 7360. Attached (above) is a photograph of my listening post. This is a link to a YouTube video of the start of the broadcast. My very best regards and thank you for your excellent website.

A screenshot from Cap's Elad FDM-S2 SDR.

A screenshot from Cap’s Elad FDM-S1 SDR.

SWL: Cap
Location: N.W. Scotland
Notes: Here is my attempt last night with SDR screenshot attached, Elad FDM-S1 with homebrew mini Mag Loop (<250mm dia) sitting on my bookcase. No doubt there will be better signals/recordings than mine as the signal was really strong from WOF and considering my setup is 100% indoors, it came out ok. External antennas don’t last here as I am by the sea and regular 100mph+ storms in the winter is too much hassle.

Click here to download this recording as an MP3, or simply listen via the embedded player below:

North America


BBC Antarctic Midwinter Broadcast Test (not) 0 00 16-29

SWL: Richard Langley
Location: New Brunswick
Notes: Tecsun PL-880 receiver with a Tecsun AN-03L 7-metre wire antenna in AM mode with 5.0 kHz RF filtering at the back of my yard. The photo [of Richard’s outdoor portable listening post] was taken during some other recordings last year.

Click here to listen to Richard’s recording, or simply use the embedded player below:

Click here to listen to Richard’s full half-hour recordings on the SRAA.


SWL: Thomas Witherspoon
Location: Saint-Anne-de-Beaupré, Québec
Notes: I traveled to an RFI quite spot in the parking lot of the Basilica in St.-Anne-de-Beaupré, Québec. Click here to read a full post about my set-up and conditions. Note that I used a Sony ICF-SW55 receiver (above), perched on top of my vehicle and tuned to 7360 kHz.

Click here to download the full recording of the broadcast, or simply listen via the embedded player below:

Unites States

SWL: Dan Hawkins
Location: Davis, California
Notes: Here is my YouTube video. I’m using both the Sangean and Hammarlund receivers to hunt down the BBC Midwinter Antarctic Broadcast. Probably a somewhat different result than on most of the videos, but probably typical of West Coast propagation at these frequencies and times.

SWL: Nace Magner
Location: Bowling Green, Kentucky
Notes:  Please find attached a video of my reception of the BBC broadcast. Unfortunately, a thunderstorm passed through about 10 minutes prior to the video and the audio is dominated by lightning-related crashes. However, the BBC signal can be heard periodically. My location was on a university campus in Bowling Green, Kentucky, which is about 50 miles north of Nashville, Tennessee. I received the signal using a Tecsun PL-660 and its whip antenna. I enjoy the SWLing site. Best regards, Nace Magner (KW4LY)

Click here to view on Vimeo.

Wow–Thank you!

Once again, many thanks to all of you who submitted your recordings of the BBC Midwinter Broadcast! We’ll be sharing this post with both the British Antarctic Survey and the BBC World Service. And to all of you, from the SWLing Post: Happy Midwinter! Happy Summer/Winter Solstice!

World Amateur Radio Day April 18th


This announcement for World Amateur Radio Day was posted on the IARU website along with links for clubs (or individuals) to download flyers and posters to promote the event.

World Amateur Radio Day

Every April 18, radio amateurs worldwide take to the airwaves in celebration of World Amateur Radio Day. It was on that day in 1925 that the International Amateur Radio Union was formed in Paris.

Amateur Radio experimenters were the first to discover that the short wave spectrum — far from being a wasteland — could support worldwide propagation. In the rush to use these shorter wavelengths, Amateur Radio was “in grave danger of being pushed aside,” the IARU’s history has noted. Amateur Radio pioneers met in Paris in 1925 and created the IARU to support Amateur Radio worldwide.

Just two years later, at the International Radiotelegraph Conference, Amateur Radio gained the allocations still recognized today — 160, 80, 40, 20, and 10 meters.  Since its founding, the IARU has worked tirelessly to defend and expand the frequency allocations for Amateur Radio. Thanks to the support of enlightened administrations in every part of the globe, radio amateurs are now able to experiment and communicate in frequency bands strategically located throughout the radio spectrum.  From the 25 countries that formed the IARU in 1925, the IARU has grown to include 160 member-societies in three regions. IARU Region 1 includes Europe, Africa, the Middle East, and Northern Asia. Region 2 covers the Americas, and Region 3 is comprised of Australia, New Zealand, the Pacific island nations, and most of Asia. The International Telecommunication Union (ITU) has recognized the IARU as representing the interests of Amateur Radio.

Today, Amateur Radio is more popular than ever, with over 3,000,000 licensed operators!

The full article and a list of several amateur-radio related activities may be found here.

Robert Gulley, AK3Q, is the author of this post and a regular contributor to the SWLing Post. Robert also blogs at All Things Radio.