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Many thanks to SWLing Post contributor, TomL, for sharing the following guest post:
August 21, 2017: Individual Recordings of MW During Totality
by TomL
I setup flimsy “Backpack Shack” loop antenna and preselector to my Sony ICF-2010 to listen to any propagation of MW signals as each transmitter experienced Totality. My location was a picnic area facing southwest with only a small hill to the east at Ferne Clyffe State Park near Goreville, IL.
I did not bring a DSP radio and computer which would have been better in hindsight. My observations were generally as follows:
Anything west of my location, except for local St. Louis stations were not identifiable.
Noise levels were somewhat elevated because of thunderstorms that had just moved through the area during the evening.
Anything east of my location experienced dramatic increases in signal along the path of totality.
Since large signal increases were seen with the Umbra moving AWAY from me, it would be more beneficial to use a DSP receiver with good outdoor antenna than a single frequency radio and preselector like my setup. The loop antenna sitting on a picnic table acted great and was usable to get strongest signal for each station.
It is still unknown why I could not identify any stations west of me with the Umbra moving TOWARDS my location and needs further study. I thought I heard KTWO in Casper WY, but upon listening to the recording, it was a male announcer buried in the noise and unintelligible.
A transmitter being IN the path of Totality has a better chance of lasting longer with a strong signal than one that is just outside of Totality. Compare behavior of WSB vs. WBT.
If this happens again, make sure to make multiple hotel reservations and cancel the ones not needed. Traffic was horrible and had to stay in a hotel half way from home and I aggravated an achillies heel problem in the stop and go traffic (YUK).
So, it was quite disappointing to not hear anything special west of my location. As Totality neared my site, I just left the radio tuned to KNOX for the people around me to hear. Its signal did become about 25% stronger and near the end of the recording you can hear other weaker stations trying to break in.
As soon as totality was over, and my picture taking was done, I returned to the radio and found 1510 khz WLAC Nashville, TN was moderately strong! And this was seconds after their Totality had already ended. A baseline reading beforehand showed this station coming in very very faintly. Subjective SINPO rating beforehand=15452, just after Totality=34433.
The next surprise was tuning to 750 WSB Atlanta GA was BOOMING in! They were very clever and had no announcers. Instead they were playing snippets of songs about sun, moon, dark themes. Very entertaining! Baseline beforehand was just moderate noise, no signals. During recording, SINPO=55444 with propagation getting slightly worse near the end of the recording.
Final surprise was 1110 WBT Charlotte, NC, which was not in the path of Totality but just north of it also booming in but not as strongly. Also, near the end of the recording, the signal dropped off very sharply, unlike the WSB signal which stayed strong throughout the 5+ minute recording. Baseline beforehand was low noise and no signals. During recording, SINPO=43434 at 14:40 ET, then approximately 1½ minutes after their maximum eclipse (14:43 ET), SINPO=33423, then at 14:46 ET a SINPO=22422 with another unidentified station breaking through playing a Johnny Cash song.
Tom, thank you for taking the time to share your recordings and listening experiences with us! Snagging a daytime MW broadcast from the Atlanta, GA and Charlotte, NC regions is most impressive. I reckon they were about 400-500 miles (as the crow flies) from your Ferne Clyffe, IL location.
Sounds like you had an amazing experience, despite the stop-and-go traffic!
Halley VI: The British Antarctic Survey’s new base (Source: British Antarctic Survey)
On Wednesday, 21 June 2017, the BBC World Service officially transmitted the 2017 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. If I’ve somehow missed including your entry, please contact me; I’ll amend this post.
So, without further ado….
The 2017 BBC Antarctic Midwinter Broadcast Recordings
Europe
Denmark
SWL: Willy, OZ4ZT Location: Copenhagen, Denmark Notes: Here is a short recording of BBC AMB on 5985kHz. It was recorded using the IC 7300’s internal record function. Antenna used was a dipole for 7MHz.
SWL: Klaus Boecker Location: JN49AC in Germany Notes: Attached please find the link to my reception Video of the 2017 Midwinter broadcast. and a photo. Just failed the first seconds, because I’ve muted my headphones and was wondering why I couldn’t hear anything. Hihi.
For the reception, I used my good, old Kenwood R1000 and my homebrewed mag-loop.
Recorded via soundcard and processed with Audacity. The Video later on is done with the NCH VideoPad Software.
SWL: Tony Roper Location: Ruhpolding, Germany Notes: 2017 BBC Antarctic Midwinter Broadcast being received on my Tecsun PL-660 whilst in Ruhpolding, Germany. Antenna was just the supplied wire hanging vertically from the window. Wasn’t expecting much due to the surrounding hills but was pleased to pick up the Ascension transmitter.
SWL: Daniele Forleo Location: Puglia, Italy Notes: This is my recording of the midwinter Antarctic broadcast, recorded in Puglia (Southern Italy) with Tecsun PL-660 with Its whip antenna.
SWL: Marc Vittorini Location: Turin, Italy Notes: Even this year I had the pleasure of listening the BBC ANTARCTIC MIDWINTER BROADCAST TRANSMISSION and I send you the listening report.
My name: Marc Vittorini
Loc: Favria (Turin) – Italy – JN35UH
Rx: Icom IC-R71E
Ant: Midland Skylab
Freq: 5985 kHz
Time: 2330-2400 utc
Signal: 9+20 with fading
I attach the recording of the first minute of the transmission received and also pictures of my receiver (during reception) and my antenna.
Unfortunately the first 20 seconds of recording are disturbed by noise due to an error in connection between receiver and recorder.
SWL: Giuseppe Morlè iz0gzw Location: Formia, Italy Notes: I used the Tecsun PL-660 with its telescopic antenna and only on Dhabbayya frequency 6035 I had a bit of difficulty. I’m on my home balcony in Formia, Center Italy, Tyrrenian sea.
SWL: Grabriele Sommas Location: Roccapiemonte, Italy Notes: Below is a video of my MIDWINTER reception–I listened to the 5,985 and 7,360 frequencies. Included are photos of my shack and antennas:
SWL: Andrea Coloru (IW3IAB) Location: Italy (locator JN55XI) Notes: I used an AOR 1500 with a long wire antenna (about 40 meters). My QTH locator is JN55XI and best frequency was 5985 kHz. There was light overlap by an RTTY station but reception was loud and clear. Other frequencies were bad, too much fading or unreadable.
SWL: Davide Borroni Location: Saronno, Italy Notes: I listened BBC Midwinter with SINPO 34333 on 6035 kHz AM Thanks for show !
I use my Hallicrafters receiver R45 ARR7 and Siemens E401 , magnetic loop antenna:
Davide with his Siemens E401 magnetic loop antenna.
I was curious to listen this transmission and Wednesday I tried to receive it with a little Tecsun PL-300wt and its antenna. My QTH is impossible for electric noise (I live in a flat on a bank with alarm, neon, and so on) but I listened the transmission on 6035 khz SINPO 24131 (quite inaudible), on 7360 kHz SINPO 34232 so I’ve listen on 5985 kHz SINPO 44333 (in record attached with ID), I’ve listen transmission from 21:30 to 21:50.
SWL: Renato IK0OZK Location: Marta, Italy Notes: Signal Report: S 9+10 to Woofferton at 5.985 Khz and Ascension on 7.360 Khz, S 5-7 to Dhabayya on 6.035 kHz. QTH: Marta VT Italy Grid: jn52xm
SWL: Cap Tux Location: Scotland Notes: BBC World Service Antarctic Midwinter Broadcast 2017. Cerys Matthews (Catatonia) presents music requests and special messages to the staff at the British Antarctic Survey, broadcasting in English, June 21 2017, 2130-2200 GMT on 5985 kHz (transmitter power of 300kW, transmitter location: Woofferton, UK).
Recorded with an SDRPlay RSP2 using SDRuno and a homebrew passive Mag Loop.
SWL: Ayrshire, Scotland Location: Scotland Notes:
Tonight I rushed home from work in time to hear the broadcast. Signals were good at my QTH in Scotland, even though we had thunder storms to the East of Scotland.
I made several (shaky) videos on my smart phone. As you will see from the videos, my receivers are more of the classic/old type, but reception was good with my home made antennas.
Details of my receivers, antennas and location are on the youtube videos.
I have posted one of reception from Wooferton on 5985 kHz Am, and one of
reception from Ascension on 7360 kHz AM.
I also heard Dhabayya with a good readable signal, but the first two were the best signals best with me.
SWL: Mark Hirst Location: Basingstoke, England Notes: Please find enclosed a short extract from yesterday’s broadcast, plus a picture of the radio used just before the programme started. Again it was so interesting to hear a broadcast aimed to such a small audience with heartfelt messages from their friends and family.
SWL: Rawad Hamwi Location: Turaif – Northern Borders Province – Saudi Arabia Notes:
[Wednesday] I tried listening to the BBC Antarctica Midwinter Broadcast (for the first time) from northern Saudi Arabia and really I enjoy it so much! All the 3 frequencies were loud and clear but the most audible one was 5985 kHz
I filmed the entire 30 min broadcast and the video is uploaded on YouTube
Here are some details I included in the video description
Date/Time: 21/6/2017@21:30 UTC | 22/6/2017@00:30 Arabia Standard Time (UTC+3)
Frequencies: 7360 kHz – 6035 kHz – 5985 kHz
Receiver: Sony ICF 7600GR
Antenna: 30 LM Longwire Antenna
Location: Turaif – Northern Borders Province – Saudi Arabia
North America
Canada
SWL: Richard Langley Location: New Brunswick Notes:
I had good luck with recording the BAS broadcast both here and using the U. Twente receiver. Attached are two two-minute clips, one from the start of each recording. Also attached [above] is a photo of the “listening post” at the back of my yard.
The Elecraft KX2 which I hooked up to a NASA PA 30 multi-band compact wire antenna that I suspended in a tree.
None of the frequencies used for the Midwinter broadcast were ideal for my location and time of day (after all, these broadcasts target Antarctica!) but last year I did successfully receive the 41 meter band broadcast.
The KX2/NASA PA 30 provided the best reception results, but sadly the recording turned out quite poor due to an incorrect setting on my Zoom H2N digital recorder.
Fortunately, I did make the following video of my Sony ICF-SW100 in action:
SWL: Ed McCorry (KI4QDE) Location: North Carolina Notes: Attached are 2 audio clips of the broadcast. Both on 7360 from Ascension.
I could not hear anything on the other frequencies.
SWL: Nace Magner Location: Bowling Green, Kentucky Notes: I listened to the signal on 7360 kHz from the back porch of my home in Bowling Green, KY. I used a 35′ end-fed external antenna located about 20′ up in a tree. I received a similar quality signal using the external antenna with a Kaito 1103 radio. I also received the signal on the Kaito using only its whip, although the signal was substantially weaker.
Thank you for your excellent work on the SWLing Post.
SWL: Jon Pott Location: Michigan Notes: My first attempt at catching the Midwinter broadcast; I wasn’t expecting to pick up anything at all, but the Ascension Island location came through well enough that I could positively identify it when I compared to BBC’s recorded broadcast.
Recording of my reception (the beginning of the recording corresponds approximately to the 4:00 mark in the BBC recording below).
Location was western Michigan in the U.S.
42°46’40” N
86°03’48” W
Elevation: Approx. 212m ASL
SWL: David Iurescia (LW4DAF) Location: Argentina Notes: I’m sending you the first seconds of the BBC Antarctic Midwinter Broadcast, using a Yaesu FT 840 and a half wave dipole, 30 Km south from Buenos Aires. It is on 7360 Khz. It had good signal, but too much noise here.
Rothera Research Station, Adelaide Island, Antarctica (Image Source: British Antarctic Survey)
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!
Many thanks to SWLing Post contributor, Mark Fahey (our resident North Korea specialist) who shares the following comment regarding our recent post about the re-activation of the North Korean Numbers station:
The Pyongyang numbers (designated V15) have either become less regular or changed their schedule since March. Its been a few months since I have personally received them – but I also haven’t been specifically tuning in for them lately so maybe I have simply missed noticing a timing change.
If you want to find the North Korean numbers, they are read out in a block between songs within the regular programing of the Pyongyang Pangsong radio station.
The choice of music immediately before the number block seems to indicate which recipient agent the transmission is directed to.
For Agent 27 “We Will Go Together with a Song Of Joy” is played, whereas Agent 21’s song is “Spring of my Hometown.”
The announcements typically take between 5 to 10 minutes to read dependent on the number of digits passed. The transmission schedule is variable; in early 2017 the broadcast alternated with a cycle of one week on Thursday night at 12:45AM Pyongyang Time (1615 UTC) and the following week on Saturday night at 11:45PM Pyongyang Time (1515 UTC).??
Pyongyang Pangsong can be heard on these shortwave band frequencies (it is also on MF & FM on the Korean peninsular):
3250 kHz, Pyongyang 100KW Transmitter
3320 kHz, Pyongyang 50KW Transmitter
6400 kHz, Kanggye 50KW Transmitter
Mark followed up this morning with a off-air recording of V15 on 3250kHz. Mark comments, “I will leave the decrypted message content to your imagination!”
This morning, I woke up, tuned to 9,580 kHz and all I heard was static.
Other than when the Shepparton transmitting station has been silenced for maintenance in the past, 9,580 kHz is one of the most reliable frequencies I’ve ever know on shortwave. Radio Australia has met me there every morning I’ve listened since I was eight years old.
I feel like I’ve lost a dear friend and certainly a staple source of news on shortwave radio. I know I’m not alone–a number of readers have shared similar sentiments this morning.
Archiving Radio Australia’s final days on the air
Listening to Radio Australia on 12,065 kHz with the Titan SDR Pro.
Since the beginning of the year, a few of us have been making a concerted effort to thoroughly archive Radio Australia’s final days on the air. Mark Fahey, London Shortwave, Richard Langley, Rob Wagner and I (to name a few) have been making both audio and/or spectrum recordings.
At 0100 UTC on January 31, 2017, we heard the “Waltzing Matilda” interval signal for one last time. As I understand it, the crew at the Shepparton site left the transmitter on a few extra seconds extra so their famous interval signal would be, in essence, the final sign-off.
Due to propagation and the time of day when the shut down happened, I was unable to make a recording, so I’m pleased others could.
Mark compares shortwave and satellite feeds
Mark Fahey’s Wellbrook Mag Loop antenna.
I’m grateful to friend and contributor, Mark Fahey, who lives near Sydney, Australia, and was also able to record the final moments of Radio Australia as well. Mark recorded the shortwave service and RA satellite feed simultaneously.
Mark shares the following recordings and notes:
Recording 1
This is RA’s final few minutes on shortwave – it was recorded on 17840kHz.
The file picks up the regular program ending, then into a Promo for RA “Pacific Beat” (a Pacific current affairs program), then the classic RA Interval Signal then the transmitter clicks off and the void is heard.
The file starts at exactly the same time as the first file, but in this example we are monitoring the Network Feed from Intelsat 18 at 180.0 degrees east (above the equator right on the international date line). This satellite feed is the way Radio Australia gets to the network of FM Transmitters they have scatted around the Pacific Region (which is why they feel they don’t need shortwave anymore for – most populated areas of Radio Australia’s target area now is covered by a network of Radio Australia FM transmitters).
Some differences to the first file – Radio Australia is produced in FM quality stereo, though of course DXers only ever heard it in shortwave quality mono. So this network feed is in stereo and has a wider dynamic range that what DXer’s are familiar with from Radio Australia. At the end of the Pacific Beat Promo, Radio Australia goes straight into News, the closing of the shortwave service was not an event that would have been noticed for the typical listeners of RA who now listen via FM in Pacific capitals and major towns.
Thank you Mark for your comparison–I’ve never heard RA so clearly. Only you would’ve thought to simultaneously record the satellite feed! It gives the moment that much more context.
A number of SWLing Post contributors have been sharing recordings this morning. I will plan to collect these and put them on the Shortwave Archive in the near future.
Rest assured: if Xenophon’s legislation gains traction, we will post updates!
No doubt, Radio New Zealand International’s shortwave service has just become that much more important in remote Pacific Islands. Click here to view RNZI’s schedule.
The current listening post and ham radio shack of Giuseppe Morlè (IZ0GZW) from Ponza Island, Italy.
Many thanks to SWLing Post contributor, Giuseppe Morlè (IZ0GZW), who shares the following short recordings of Radio St. Helena day in 2006 and 2009. These recordings were made from his home on Ponza Island, Italy using the Yaesu FRG-7 and FRG-100 and a 30 meter length of wire antenna:
Rothera Research Station, Adelaide Island, Antarctica (Image Source: British Antarctic Survey)
Post readers: I need your help!
SWLing Post reader Andy Webster (G7UHN) is searching for an off-air recording of the BBC Midwinter Broadcast to Antarctica from the year 2009.
Andy has a very personal connection to this particular broadcast because he was the wintering communications engineer at Rothera Research Station in 2009. One of his fondest memories was listening to the BBC Midwinter broadcast while he and his colleagues were huddled around the station’s Skanti TRP 8750 marine transceiver. Andy would like a proper off-air recording of the broadcast to share with his family and friends–so they can hear what the broadcast sounded like over shortwave radio.
If you happen to have an off-air recording of the 2009 Midwinter broadcast, could you please contact me or comment on this post?
Not only will we share the recording with Andy, but we would also like to post it to the Shortwave Radio Audio Archive. Thank you in advance!
Not the strongest I ever hear them, but a good solid clean nearly noise and nearly fade free signal.
That’s an impressive signal, Paul, especially considering the fact that propagation conditions have been somewhat shaky as of late. Thanks for sharing!
Many thanks to SWLing Post contributor, TomL, for sharing the following guest post:
