Category Archives: Specials

Listening to WWV at the source: Fort Collins, Colorado, USA

MysterySW-site-LTIf you haven’t already guessed it: yes, the mystery broadcast site I posted on Thursday was WWV/WWVB in Fort Collins, Colorado. Well done, responders!  Specifically, the photo shows the southern antennas of WWVB as I departed the site on Thursday, August 28, 2014; for those of you who got that detail, extra credit–!

I’d like to thank the staff at WWV/WWVB for allowing me to visit the site for the better part of the day. WWV is not officially open to tours, so this was a particular honor for me. And this was an especially fun pilgrimage, as WWV was most likely the first shortwave broadcast I ever heard:  as I’ve previously noted, when I was a kid my father used to set his watch to WWV every Sunday morning.  Now I’ve seen firsthand where that famous tock, tock (and accompanying characteristic tones) originate.

When I return home from my extended travels, I’ll sort through the photos I took at WWV and WWVB, and post them here on the SWLing Post.

Recording WWV

In the meantime, I have a few recordings to share with those who are interested in this mecca of chronology.  Before leaving WWV, I pulled out my Tecsun PL-380 and my Zoom H2N digital recorder, and recorded all the WWV broadcast frequencies. I captured their 2.5, 5, 10, 15, 20 and even their recently reactivated 25 MHz signals.

I made these recordings in the conference room at WWVB broadcast house. As you can imagine, it was simply not at all necessary to extend the telescopic antenna. In fact, the signal was so strong, you’ll hear a slight amount of distortion in the voice audio.

TecsunPL380WWVB

Below, you can listen to the recordings of each frequency via the embedded player (click on the title to download the audio). Enjoy!

WWV on 2.5 MHz

WWV on 5 MHz

WWV on 10 MHz

WWV on 15 MHz (includes top of the hour station ID)

WWV on 20 MHz

Up to this point, I used the Tecsun PL-380, but quickly realized that the ‘380 wouldn’t tune to 25 MHz. A quick look at the back of the radio revealed that the ‘380 only tunes up to 21.950 MHz (!). Believe it or not, I’d never noticed this limitation of the PL-380, likely since I rarely tune above 21 MHz for broadcast listening.  Learn something new every day…But I couldn’t fail to complete my recordings.

SangeanATS505WWVB

 

So what did I do? I turned to Matthew Deutch, Chief Engineer at WWV and WWVB, who kindly allowed me to use their Sangean ATS-505 to make the final recording:

WWV on 25 MHz (includes Atlantic and Pacific weather)

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Shortwave Shindig QSL

Shortwave-Shindig-QSL-Card

Happiness is receiving your Shortwave Shindig QSL card which sports the superb Shindig logo by Jeff (K1NSS).

Did you miss the Shindig broadcast?  Click here to listen to off-air recordings.

Also, click here to check out all of David Goren’s work at Shortwaveology.net.

I hope the Shindig will do another live broadcast in 2015. Stay tuned!

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Grab a Radio Shack DX-402 for $24 and change

RadioShack-ShortwaveI just noticed that Blinq.com has the RadioShack DX-402 (Sangean ATS-505 re-badge) for $27.09 shipped.  If you use the offer code WEEKEND10 it will take an additional 10% off at checkout for a total of $24.62 shipped.

This is an excellent price, even for an open box deal. Last time the price was $27, they sold out of stock rather quickly. Click here to grab one while it’s still available!

 

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Recording the 2014 World Cup Final

WorldCupBall-001Sunday was the FIFA World Cup Final, and not only was I looking forward to the game, but (to tell the truth) I was also looking forward to recording the game via the BBC World Service for the Shortwave Radio Audio Archive. Due to the BBC WS cuts, part of me fears this may be a last chance to capture this radio and sports history.

If you would like to hear the recordings of the World Cup Final, skip to the bottom of this post. But if you want to know how I managed to make the recordings, and why I made the choices I did, feel free to continue reading…Warning: full-on radio geek tech ahead!

Making the recording

I had two SDRs (software defined radios) at my disposal: the Elad FDM-S2 and my trusty WinRadio Excalibur.  To record this match, I choose to use an SDR rather than a tabletop receiver for several reasons, namely:

  1. I wanted to make a spectrum recording so that I could record more than one frequency at a time;
  2. SDRs make recording radio content on the fly much easier than using a tabletop receiver, which must be connected to an external audio recorder, and I wanted ease of use so I could enjoy the game, too.

Propagation was rather mediocre Sunday, and there were only three feasible BBC World Service English frequencies I could tune in mid-afternoon, none of which, of course, were targeting North America:

  • 11,810 kHz from Ascension Island
  • 13,660 kHz from Woofferton, UK
  • 15,400 kHz from Ascension Island
  • 9,915 kHz from Woofferton, UK (starting at 20:00 UTC)

My hunch was that either 13,660 or 15,400 kHz would be my best bet for the early part of the match (pre-game starting at 18:30 UTC, half time at 20:00 UTC), however, I knew they would drop off after the first half of the game. And 11,800 kHz would be my best bet in the latter part of the game, unless 9,915 kHz happened to be stronger.

In the past, 11,800 had served me quite well for afternoon BBC listening, but yesterday there was an unscheduled religious broadcaster on 11,825 that was causing interference a full 30 kHz on either side of their carrier! During my pre-game check of the frequency, each attempt I made to block this broad interference was unsuccessful–very frustrating.

Which SDR?

The FDM-S2 is a fine SDR, and I was very tempted put it to the test.  But while the Elad FDM-S2 is quite capable of making very wide spectrum recordings (up to 6 MHz) and could easily record all four frequencies on four different meter bands at the same time, I decided to use the WinRadio Excalibur, instead.

Why? If 11,800 kHz was my only viable frequency option in the latter half of the game, I needed a receiver that could sync to the less noisy lower sideband of 11,800 kHz. While Elad plans to add USB/LSB selectable synchronous detection in the next version of their SDR application, it currently does not have this capability.

I suppose, too, I feel more comfortable with the WinRadio Excalibur; I’ve been using it now for well over two years. If something were to go wrong during the broadcast, I knew I could diagnose it quickly on the Excalibur.

In addition, the Excalibur can do both a spectrum recording and up to three individual AF recordings at the same time (though limited within a 2MHz bandwidth). I’m not sure if Elad has plans for this in their next SDR.

Setting up the Excalibur

The Excalibur only has a 2 MHz bandwidth for spectrum recordings. I knew if I focused on the middle frequency of 13,660, I would be able to record it and either 15,400 or 11,810 at the same time, but not all three.

The first half of the match, I recorded both 13,660 kHz and 15,400 kHz in a 2 MHz wide spectrum recording. At the same time, I recorded the audio (an AF recording) from 13,660 kHz, which was consistently the stronger of the two frequencies.

Half time

By 20:00 UTC, I knew both 13,660 and 15,400 kHz would stop transmitting and I would need to either hop to 11,810 kHz or 9,915 kHz.

While maintaining a good audio recording of 13,660, I stopped the 2 MHz spectrum recording and moved it to encompass 13,660 and 11,810 kHz. A quick check proved that 11,810 was the strongest station. Fortunately, the interference above 11,810 had quieted somewhat at that point, and by using the LSB sync lock, this noise was successfully mitigated a bit.

Still, I could hear a chuffing sound coming from the splatter 11,825 was producing. So I enabled the notch filter and widened it to 2 kHz. By shifting it around in the upper side band, I was able to find the “sweet spot” where most of the splatter noise was canceled. I then started the audio recording on 11,810 a few minutes prior to 20:00 UTC, making a little audio overlap with simultaneous recording on 13,660.

Syncing on the lower sideband and using the notch filter in the upper sideband mitigated most of the interference.

Syncing on the lower sideband and using the notch filter in the upper sideband mitigated most of the splatter interference.

In the end, I was very pleased with the results of the recordings. While capturing the BBC World Service isn’t exactly like snagging rare DX, I felt I had a lot riding on this recording, so pre-game preparations were necessary, especially since the Excalibur couldn’t record spectrum from 9,915 to 15,400 kHz.

And in theory, had I used the Elad FDM-S2, I could have recorded the entire chunk for three hours and then revisited the material later to make audio recordings from the AF.

The recordings

For your listening pleasure: the full 2014 World Cup final via the BBC World Service. This broadcast is broken into 3 sections: pre-game and the first half, second half, and extra time. Enjoy!

Pre-game and first half (13,66o kHz):

Second half (11,810 kHz):

Extra time and game wrap-up (11,810 kHz):

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BBC World Service: Portugal vs. Ghana

WorldCupBall-001Earlier today, I tuned to the BBC World Service on 17,830 kHz at 16:00 UTC, hoping they would be covering the USA vs. Germany game of the FIFA World Cup. I was pleased to hear World Cup coverage the moment I tuned in–but was a little disappointed that BBC had selected the Ghana vs. Portugal game.  Still, I can’t complain; this BBC service is, after all, intended for Africa. And a lot was at stake for Ghana…

So, I listened to the BBC coverage of that game while watching the USA vs Germany game stream over ESPN. I also watched a little of the Portugal/Ghana game, and realized I had an advantage over others streaming the game because the shortwave coverage from the BBC was almost 5 seconds ahead of the live stream. That’s the power of shortwave: goals at the speed of light!

For your listening pleasure, here is the full recording I made from the BBC World Service today. Click here to download the recording as an MP3, or simply listen via the embedded player below:

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Today: Catch and record the BBC’s broadcast to the British Antarctic Survey Team

Halley VI: The British Antarctic Survey's new base (Source: BBC)

Halley VI: The British Antarctic Survey’s new base (Source: BBC)

Every year, the BBC broadcasts a special program to the 41 scientists and support staff in the British Antarctic Survey Team.

The BBC will play music requests and send special messages to the team who winter over in this isolated post. The broadcast is guaranteed to be quirky, nostalgic and certainly DX worth catching. Click here to listen to the 2013 broadcast.

The winter program will air today, June 21, 2014 at 21:30 UTC on the following frequencies:

  • 7,350 kHz; Ascension; 207°
  • 9,890 kHz; Woofferton; 182°
  • 5,985 kHz; Dhabayya; 203°
  • 5,875 kHz; Wooferton; 184° (updated)

Readers: If you have a chance, try to record the broadcast as I’m uncertain if I’ll have a chance to catch it this year. I would like a good recording for the Shortwave Radio Audio Archive.

Many thanks!

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International Radio for Disaster Relief includes special QSL: June 5 – 6, 2014

HFCC-InternationalRadioForDidsasterRelief

The High Frequency Co-ordination Conference’s (HFCC) test of the International Radio for Disaster Reduction (IRDR) broadcasts are on track for June 5-6, 2014.

Many thanks to SWLing Post reader, Mehmet Burk, who has posted the updated schedule on his website, Relief Analysis.

Mehmet also shares this message from HFCC Board member, Oldrich Cip, who mentions a special QSL card that will be issued for IRDR reception reports:

“The Trial of International Radio for Disaster Relief on June 5th and 6th during the Jakarta ABU Media Summit is approaching quickly. The last updated version of the Trial programme is available in a presentation here:
http://hfcc.org/doc/HFCC_RAD_2014-004-IRDR_Jakarta_Presentation.pdf

Let me ask all organisations taking part in the Trial to check on the Trial programme schedule and ask for any changes or additions of the technical details that might be still needed. More details about the IRDR and about the Trial and its background are here:
http://hfcc.org/humanitarian/irdrtrial.phtml

The interest in the Trial created among participants indicates that it is real to set up a world-wide system of a voluntary, disaster relief shortwave radio with tools and services that are already in place. Publicity is needed to raise awareness in the world community about it – since the on-going cuts of shortwave installations might make this increasingly difficult.

Please kindly spread the word about it and encourage people to listen to the Trial programmes. Reception reports will be confirmed by special QSL cards.”

Again, check out Mehmet Burk’s IRDR updates on Relief Analysis.

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