Category Archives: What’s On Shortwave

Recording the 2015 Leap Second

Yesterday, I posted a brief article about the leap second that occurred between 23:59:59 June 30, 2015 and 00:00:00 UTC July 01, 2015.

I decided to record the leap second on as many shortwave time station frequencies as possible. The only viable options for me–based on time of day and my reception location–were the WWV frequencies 10, 15, 20, and 25 MHz, and CHU frequencies 7,850 and 14,670 kHz.

I was able to record four different time station frequencies simultaneously on the TitanSDR Pro.

I was able to monitor four different time station frequencies simultaneously on the TitanSDR Pro. (click to enlarge)

Unfortunately, HF propagation was very poor yesterday, so the higher WWV frequencies–20 and 25 MHz–were completely inaudible, as was CHU on 14,670 kHz. There were numerous thunderstorms in our area, so static crashes were prevalent.

Still, since this was a first attempt to record a “leap second,” I didn’t want to take any chances. I had the Titan SDR Pro monitoring and recording two CHU and two WWV frequencies [screenshot], the Elad FDM-S2 recording WWV on 15 MHz [screenshot], and the WinRadio Excalibur on WWV’s 10 MHz frequency, as well as recording the whole 31 meter band spectrum [screenshot].

In the end, the strongest frequencies I captured were CHU on 7,850 kHz and WWV on 15,000 kHz. WWV on 10,000 kHz was much weaker than normal and the band was quite noisy–still, it’s readable, so I included this recording, too. Recordings follow…

Recordings

Photo I took in 2014 of the sign above WWV's primary 10 MHz transmitter.

The sign above WWV’s primary 10 MHz transmitter (2014).

All of the recordings start just before the announcement of 23:59 UTC.

WWV added the extra second and higher tone, then continued with their top of the hour announcements, including a note about leap second (which begins after the 00:04 announcement). CHU simply injects a one second silence before the long tone.

WWV on 15,000 kHz using the Elad FDM-S2:

CHU on 7,850 kHz using the TitanSDR Pro:

WWV on 10,000 kHz using the WinRadio Excalibur:

One interesting note about the 10 MHz WWV recording above: I believe I may be hearing BPM China in the background. I’m curious if anyone can confirm this because I don’t know BPM’s cadence/pattern well enough to ID it.

Other recordings…?

Did you record a shortwave time station as leap second happened? If so, please comment, and feel free to share a link to your recording!

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Hang on a second…seriously

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One of four WWV time code generators in late August, 2014

Tonight, for the first time in three years, we will experience a leap second. What is a leap second? Wikipedia provides a concise explanation:

A leap second is a one-second adjustment that is occasionally applied to Coordinated Universal Time (UTC) in order to keep its time of day close to the mean solar time, or UT1. Without such a correction, time reckoned by Earth’s rotation drifts away from atomic time because of irregularities in the Earth’s rate of rotation. Since this system of correction was implemented in 1972, 25 such leap seconds have been inserted. The most recent one happened on June 30, 2012 at 23:59:60 UTC. A leap second, the 26th, will again be inserted at the end of June 30, 2015 at 23:59:60 UTC.

Like many of you, when I think of time–or UTC–I think about the NIST radio station WWV in Fort Collins, Colorado.

I had the honor of visiting the facility last year (yes, photo tour still forthcoming!). During the tour, my guide and Chief Engineer at WWV and WWVB, Matthew Deutch, told me that he’s always going to be on site come Leap Second!

WWV’s Matthew Deutch with WWVB antennas in background

I wrote Matt this morning to ask what were his plans tonight? His reply:

“The leap second happens at 0000 UTC tonight, which is 6:00 pm here in Fort Collins. All of the programming took place at the beginning of the month, so the equipment is armed…we just sit back and watch for the leap this evening.

Even though it is automated I hang around the station to make sure everything goes smoothly at the critical moment…”

Matthew closed his message by wishing me a “Happy Leap Second.”

Back at you, Matt! We hope that second leaps as smoothly as you’d like!

Not to put Matt on the spot, but you can listen to WWV (or the atomic clock of your choice) make the leap second tonight at 00:00 UTC. As for me, I’ll hop on 10 MHz and 15 MHz to hear (and hopefully record) the extra “tick.” At the end of this post, I’ve provided a list of time stations for your convenience.

Happy Leap Second!

WWV 20 MHz Collins transmitter

List of shortwave radio time stations

CHU Canada: 3330 kHz, 7850 kHz, 14670 kHz
BPM China: 2,500, 5,000, 10,000, and 15,000 kHz
HLA South Korea: 5,000 kHz
BSF Taiwan: 5,000 and 15,000 kHz
WWV (Ft. Collins)/WWVH (Hawaii) United States: 2,500, 5,000, 10,000, 15,000, 20,000 and 25,000 kHz

Update

Click here to listen to Leap Second recordings from WWV and CHU.

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Shortwave Radio Recordings: Voice of Greece

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For your listening pleasure: the Voice of Greece.

This was recorded on 29 June 2015 starting around 01:50 UTC on 9,420 kHz using my WinRadio Excalibur and my horizontal delta loop external (wire) antenna.

I’m very pleased with this off-air recording because it contains several minutes of multi-language station IDs in the last 10 minutes or so of the broadcast.

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

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WRMI test transmission of Armed Forces Radio of Nigeria

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(Source: WRMI on Facebook)

Radio Miami has arranged for a one-week test transmission of the Armed Forces Radio of Nigeria from the Issoudun, France relay site beginning Tuesday, June 30.

The transmission, which will be directed to West Africa, will be from 0600-0700 UTC on two frequencies:

11,825 kHz will carry a Hausa-language program, and

13,775 kHz will carry an English-language program.

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WRTH update to A15 schedule

Reminder: Help record the 2015 BBC Antarctic Midwinter Broadcast today!

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As a reminder: I’m calling on all SWLing Post readers and shortwave radio listeners to make a short recording (say, 30-60 seconds) of the BBC Antarctic Midwinter Broadcast and share it here at the Post (frequencies and time below).

The recording can be audio-only, or even a video taken from any recording device or smart phone. It would be helpful to have a description and/or photo of your listening environment and location, if possible.

If you submit your recording to me, I will post it here on the SWLing Post–and insure that the BBC World Service receives the post, too. The recordings will be arranged by geographic location.

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

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

The broadcast will take place today at 21:30 UTC on the following frequencies:

5,905 kHz, Dhabayya, 203 degrees
5,985 kHz, Woofferton, 184 degrees
9,590 kHz, Woofferton, 182 degrees

I will (hopefully) be in the SWLing Post chat room during the broadcast. Please sign in and share your report!

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Shortwave Radio Recordings: Voice of Greece

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Early this morning, around 01:14 UTC, I tuned to 9,420 kHz with the Elad FDM-S2 and heard the Voice of Greece for the first time since the Greek national broadcaster, ERT had been restored.

SWLing Post contributor, Richard Langley, also noted the strong signal from Greece. He has kindly shared the following information which he also posted in the DXLD Yahoo group:

“Greece is back on 9420 kHz this evening after being absent for some days and is now carrying the Voice of Greece […] program and not ERT from Athens or Thessaloniki. Noted with good signals in eastern Canada at 01:40 UTC. Radio audio is about half a minute delayed with respect to Internet stream: […](http://www.ert.gr/i-foni-tis-elladas/?). Not noted on other frequencies.

[…]9420 kHz signed off just after [02:00] UTC. Internet stream continued. And I should correct myself when I mentioned “not ERT from Athens or Thessaloniki.” Should have said not ERA from Athens or Thessaloniki. ERA is the abbreviation for Hellenic Radio […], as opposed to ERT which stands for Hellenic Radio-Television […]. ERT1, ERT2, etc. are TV stations while ERA1, ERA2, etc. are radio stations. This is a bit like BB1, BBC2, …, and BBC Radio 1, BBC Radio 2, and so on.”

Richard followed up a few hours later:

“I continued listening to the Internet stream after the SW transmission ended, and at 02:57 UTC, the station identified itself in both Greek (“Edo Athina, I Foni Tis Elladas”) and English (“This is Athens. You are listening to the Voice of Greece”) several times, followed by the traditional interval signal and then what I believe to be the Greek national anthem at 03:00 UTC. A program of Greek music then ensued.”

Many thanks for sharing the details, Richard. My recording actually ended when VOG signed off–I suppose I caught about the last 46 minutes of the broadcast.

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

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