Elad FDM-S2 on sale $499 US

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While browsing the Elad website, I noticed an End of Summer sale on their US retail page.

The sale includes one of my favorite sub-$1000 SDRs–the Elad FDM-S2–priced at $499 US (originally $580). If you’ve been on the fence about purchasing the FDM-S2, this might be a good time to bite the bullet. Certainly a great value, in my book. Click here to read my review.

Note that the Elad FDM-DUO stand-alone SDR transceiver and FDM-S1 receiver are also on sale.

I don’t see an indication of when the sale ends, but I assume it may last until the end of summer. If interested, you might contact the Elad sales department to confirm.

From Fessenden to HD Radio navigation

IBOC Spectrum (Source: GPS World)

IBOC Spectrum (Source: GPS World)

SWLing Post contributor, Richard Langley, is not only a dedicated shortwave DXer, but he’s also on the faculty of the Department of Geodesy and Geomatics Engineering at the University of New Brunswick. Additionally, Richard coordinates Innovation: a regular GPS World feature that discusses advances in GPS technology and its applications.

The latest Innovation feature is absolutely fascinating in that it highlights the potential for AM broadcast band HD radio signals (IBOC) to be an effective navigation aid. Richard’s introduction to this article takes us back to the time of Reginald Fessenden:

THE YEAR WAS 1906. On Christmas Eve of that year, Canadian inventor Reginald Fessenden carried out the first amplitude modulation (AM) radio broadcast of voice and music. He used a high-speed alternator capable of rotating at up to 20,000 revolutions per minute (rpm). Connected to an antenna circuit, it generated a continuous wave with a radio frequency equal to the product of the rotation speed and the number of magnetic rotor poles it had. With 360 poles, radio waves of up to about 100 kHz could be generated. However, Fessenden typically used a speed of 10,000 rpm to produce 60 kHz signals. By inserting a water-cooled microphone in the high-power antenna circuit, he amplitude-modulated the transmitted signal. On that Christmas Eve, he played phonograph records, spoke and played the violin with radio operators being amazed at what they heard.

Fessenden had earlier worked with spark-gap transmitters, as these were standard at the time for the transmission of Morse code, or telegraphy, the wireless communication method already in use. But they couldn’t generate a continuous wave and couldn’t produce satisfactory AM signals. But as telegraphy was the chief means of communication, they remained in use for many years along with high-powered alternators and the Poulsen arc transmitter, which could also generate continuous waves.

Continue reading at GPSworld.com…

The vital role of radio in North Korea

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Many thanks to SWLing Post reader, Ulis, who recently shared a link to this story in the DailyNK.

Here’s an excerpt:

In the case of loudspeaker broadcasts, which roiled the North, eventually leading to artillery fire, it can only be heard 25km into the North from the demilitarized zone, but in the case of radio broadcasts, many North Koreans can gain access, which is why it’s believed to a play a larger role in psychological warfare.

“After listening to the radio, I naturally found myself comparing things with the reality in North Korea,” Chae Ga Yeon (50), a North Korean defector who used to enjoy tuning into radio broadcasts, told Daily NK on Wednesday. “Having learned about things that are different from state propaganda, I took on a more critical way of thinking toward the state, and I started to realize Kim Il Sung and Kim Jong Il are not gods as the state claims. They started to look like average human beings,” she said.

“People who have tuned into broadcasts like these don’t keep the information to themselves. They share it with others,” Chae explained. “This makes other people listen in on the broadcasts as well, and they start being more critical against the state that is blocking out the information.”

Kim Seong Yeob (45) is another escapee who also tuned into these broadcasts. “North Korean broadcasts are not interesting since all they do is focus on idolization, so I enjoyed listening to South Korean broadcasts since they would share different news stories and air radio dramas as well,” Kim said. “Then I came to open my eyes to the false propaganda and developed this desire to learn more about society in North Korea and study it,” he recalled.[…]

Experts believe these broadcasts can expedite change in people’s awareness in North Korea. Given that state dominance over information is the control mechanism used over North Koreans, they believe information from outside can deal a severe blow to the North Korean system.

Click here to read the full article at the DailyNK…

Daily NK and Unification Media Group will post a series of nine articles on the effects of broadcasts to North Korea. Check the DailyNK website for updates.

As we mentioned in a previous post, the BBC has announced plans to broadcast to North Korea in the near future via shortwave. Bloomberg Business reports, however, that these broadcasts may never happen due to the potential for political backlash.

To follow all of our North Korea posts, bookmark this tag.

Frank shares 1991 recordings and original notes of station IDs and interval signals

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SWLing Post reader, Frank, writes from Germany:

First let me say that I enjoy your blog a lot.

After a 2005-13 hiatus, I have rediscovered a childhood hobby and your reviews have helped me find my way to the post-Sony portable shortwave radio markets.

First, I obtained my “childhood dream” radio (Sony ICF 2001D), because at the time I made these recordings I was still in school and 1300 DM would have equaled over 1 year of pocket money, so a Supertech SR16HN had to do. I thought I got some fine results with this Sangean-Siemens re-branded receiver then, using a CB half-length antenna, a random wire, and much endurance.

The Supertech SR16HN (photo: Radiomuseum.com)

The Supertech SR16HN (photo: Radiomuseum.com)

I kept regular logs throughout the years, wrote to 50 international and pirate stations for QSL and compiled this cassette.

A few years before I got that trusty SR16HN, however, I recorded a few number stations (such as G3, Four Note Rising Scale etc) with an ordinary radio cassette recorder, and in 1991 I put them onto this tape as well. The other recordings are done with the same radio placed right in front of the SR 16HN.

Feel free to make use of these recordings. Most of it are the well-known international state-owned shortwave stations of the past; plus European pirates; plus number stations; and at the end, a few (off-topic) local Am and FM stations interval signals.

As I said, this collection I made shortly after the Wende/reunification period, when all former-GDR state broadcasters changed their names, sometimes more than once.

Please continue your good work on the blogs! Weather permitting I am often outside cycling and always have the tiny Sony ICF 100 with me (which I call my then-student’s dream radio of the later 90ies).

Cassette Side 1

Click to enlarge.

Frank’s original hand-written notes. Click to enlarge.

Click here to download Side 1, or listen via the embedded player below:

Audio Player

Cassette Side 2

Click to enlage.

Click to enlage.

Click here to download Side 2, or listen via the embedded player below:

Audio Player

Wow! Frank, what a treat to listen to all these station IDs!

I had forgotten how many interval signals have changed over time and how many, of course, have disappeared. This tape represents a flood of nostalgia for me.

I should add, too, that I’ve enjoyed hearing so many IDs in German. It’s funny, but we all get hooked on listening to language programming from our native or second languages. It makes me realize just how many broadcasters used to have German language services.

Again, many thanks, Frank, for taking the time to digitize these recordings and scan your original hand-written notes. This stuff is invaluable, in my book!

BBC sets plans for next decade

BBC-AT-WARMany thanks to SWLing Post reader, Bill, for sharing a link to this article which summarizes the BBC’s plans for the next ten years.

BBC director general, Tony Hall, said the corporation will become an “open BBC for the internet age”.

While Hall was quick to add that funding cuts would equate to “the loss or reduction of some services” he also highlighted several efforts that would include shortwave and mediumwave broadcasts, including:

  • “Significant investment” in the BBC World Service, including a daily news programme for North Korea and more broadcasts to Russia, India and the Middle East
  • A news service for Ethiopia and Eritrea on medium wave and short wave

Of course, we can expect more cuts to BBC World Service shortwave broadcasting over the next ten years even if it wasn’t specifically mentioned in Hall’s speech. If we’re lucky, the BBC will continue to broadcast into those parts of the world that still rely on shortwave. Specifically mentioning North Korea, Ethiopia and Eritrea appears to be a nod in that direction.

Click here to read this article on the BBC News website.

Also, The Guardian has posted the full text of Tony Hall’s speech. It’s worth reading.

The Enigma Event: an on-air exchange of encrypted messages

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(Source: Southgate ARC)

Members of the ARI Fidenza will be activating special callsigns IO4ENG and IQ4FE during the ‘Enigma Event’.

The Enigma Event consists of exchanging ham radio messages over the air encrypted with the Enigma code of WW II memory to commemorate its importance in the history of communications and encryption.

The Event Enigma is one of the “European Researchers’ Night” events on Sept 25th, when a number of initiatives will be organized by European research and cultural institutions.

An Amateur Radio Award (ENIGMA AWARD) is associated with this event. The ham activity of the ENIGMA AWARD will start on Sept. 12th.

All details and rules are available on the official Web site at: http://www.enigma-reloaded.it

This should be a fun event to hear on the air and one of the very few sponsored by ham radio operators who will intentionally transmit “encrypted” messages.  I will try to tune in.

A photo tour of the 2015 Shelby Hamfest

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For the first time in over a decade, my Labor Day weekend was free of travel, so I was able to make a short pilgrimage to the Shelby (North Carolina) hamfest with my good buddies, Vlado (N3CZ), Dave (K4SV) and Phil (W9IXX).

The Shelby Hamfest–referred to, locally, as “The Grand-Daddy of them All”–has long been regarded as one of the largest hamfests in the southeast US. The last time I attended–most likely in 2004–I was amazed at the number of vendors and, especially, the size of the flea market section (my favorite part of any hamfest).

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We arrived just after the gates opened at 8:00, yesterday morning. While there were quite a number of vendors sprawling the Cleavland County Fairgrounds, attendance must have been down as it seemed there were more vendors than attendees.

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Still, it was nice to hunt for treasures without so much competition at each table!

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This BC-348-R (above) was one of the first radios that grabbed my attention. Though I already have a BC-348-Q, I certainly wouldn’t mind having another one of these classic WWII era receivers.

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This BC-348-R was very clean inside and in pretty good original cosmetic shape on the outside. To power this BC-348, I would need to add a transformer or a 28 volt Dynamotor. The seller had it priced at “$100 OBO” (or best offer). I was willing to make him an offer, but even though I kept checking back, I never found the seller at his table. Too bad.

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This BC-348-Q–priced at $125–needed a new transformer and a “tune-up,” per the seller.

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It’s rare to find a GPR-90 this clean and with a matching speaker.

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The seller only wanted $40 for this Hammarlund speaker.

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There were a number of Hammarlund SP-600s scattered across the flea market. I have one and can confidently say that it’s a joy to operate–especially on the medium wave band. IMG_20150905_084228534 IMG_20150905_084913833 IMG_20150905_084716573

The seller wanted $200 for this Harris–it needed substantial repairs internally.

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This gorgeous WWII era ART-13 was the most tempting thing I found in Shelby.

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It would look so good sitting next to or above my BC-348-Q.

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This one had been professionally restored and was in perfect working order. I’ve seen ART-13s at other hamfests, but never as clean as this one.

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The seller wanted over $500. While I know an ART-13 in this condition could command that price, I simply didn’t have the budget for it on this trip.  Fortunately, the seller is a friend-of-a-friend and if he still has this ART-13 post-fest, I might just contact him!

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The Ten-Tec Argonaut 509 is a classic little QRP transceiver! Someday, I’ll pick one up.

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If memory severs, the seller wanted $275 for this used Satellit 750 and $325 (or more) for the 800.  I noticed he had sold the 750 by my second pass.  IMG_20150905_090725657

This Sharper Image shortwave receiver (above) has BFO and tone controls on the back(!) of the unit. Very strange–imagine tuning in an SSB station by reaching behind the radio and tweaking the BFO knob!IMG_20150905_090544603 IMG_20150905_090516038 IMG_20150905_092653649 IMG_20150905_092054649 IMG_20150905_092025822_HDR

The seller wanted $100 for this Hallicrafters portable receiver. Knowing my weakness for anything Halligan, I forced myself to slowly back away. It wasn’t easy leaving it on the table.

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There were very few console radios at this hamfest; all of them were in poor condition which made it much easier for me to pass them by. IMG_20150905_092958884 IMG_20150905_103504866_HDR IMG_20150905_103155217_HDR

This 1960’s era Signal Corps TG-34-A Morse code reader was also tempting and one of the last items I viewed in the flea market. The seller wasn’t at the table, so I never bothered asking about the price. If it had been a WWII era reader, it would have come home with me.IMG_20150905_103229288

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Elecraft had a nice indoor display and a steady number of attendees inquiring about their new K3s transceiver and, of course, the KX3.
IMG_20150905_105237940In the end, I came home from Shelby with very little: only two patch cables and a male SMA connector.

I did, however, get to spend time with my friends, re-connect with a buddy I hadn’t seen since high school, and meet a few SWLing Post readers. I certainly call that a successful hamfest!