Tag Archives: Jammers

Chris’ Seoul AM Radio Listening Guide now live

Many thanks to SWLing Post contributor, Chris Kadlec, who shares the following announcement about his Seoul AM Radio Listening Guide:

After a long 14 months of work, I’m happy to present the completed Seoul AM Radio Listening Guide, a three-hour documentary broadcast exploring the Seoul AM band one frequency at a time, plus a look at the radio war on the Korean peninsula accompanied by a 115-page guide.

http://www.beaglebass.com/dx/seoul/

In addition to radio broadcasts from across East Asia, the broadcast includes Korean noise jammers and AM, FM, shortwave, and television propaganda broadcasts from both the north and the south, additionally outlined in a 25-page broadcast transcript and 115-page informational guide. It also includes:

* A comprehensive list of 260 East Asian AM stations, including station names, tower locations, distance and direction from Seoul, parallel FM frequencies, broadcast hours, and station website links.

* A full bandscan of 235 regular nightly skywave signals as heard after the sun sets over Seoul.

* Daytime groundwave bandscans taken from eleven different locations in the Seoul metro area, along the North Korean border, beside the sea, and in Korea’s mountainous interior with background information about each location.

* A guide showing stations organized by their network affiliations in addition to privately-owned stations and networks. Alternatively, stations are also shown organized by country, region, and city.

* A chart showing signal strength for each bandscan – day and night – in bar graph format.

* A full colour-coded regional station map covering both skywave and groundwave signals.

* A view of some of Korea’s signal jammers as seen on an SDR (software-defined radio).

* Plus, a complete transcript of the three-hour audio broadcast with additional information on the featured audio clips as well as the songs featured in those clips.

– Chris Kadlec

Brilliant, Chris! I can only imagine the amount of time and effort you’ve put into this guide. Thank you!

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Korean jammers and propaganda stations

Many thanks to SWLing Post contributor, Chris Kadlec, who has kindly (and upon my request) shared this interesting audio survey of Korean jammers and propaganda stations.

This is the final 45 minutes of my 3-hour – exactly 3 hours – broadcast of East Asia AM radio (skywave as heard from Seoul, frequency by frequency).

Click here to download or play in a new window.

This includes jammers and propaganda stations on TV, FM, AM, and SW, though the AM band is covered in the first 2 hours. Some stations covered include Voice of the People, Echo of Hope, Jayuui Sori, Jayu FM, and Korean Central Television, as well as a look at the sounds of more than 30 Korean jammers one frequency at a time.

At the end of this month, the first 2 hrs. 15 min. will be released with a 60+ page guide, broadcast transcript with all song titles from the broadcast, and station map and all audio will be posted in a (somewhat) visible location. This project has taken 14 months to complete, so I truly hope you’ll take the time to become educated on the radio wars on the Korean peninsula. And if you’re too busy now, this part will be included in the full broadcast coming soon, so do not fret!

This is fascinating, Chris.  Thank you for taking the time to share this with us–I imagine you’ve put in a number of days recording, editing, and narrating this fine spectrum survey. I’m also certain our community member, Mark Fahey, will love this (if he hasn’t already discovered your work)!

Please keep us updated on your project!

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Radio Eritrea and Radio Ethiopia jamming intrudes on amateur frequencies

eritrea-ethiopia

Many thanks to SWLing Post contributor, Vlado (N3CZ), for sharing the following story from the South African Radio League newsletter:

Broadcasters, jammers wreak havoc on amateur radio frequencies

The ARRL reports the battle in the amateur radio 7 MHz band continues between Radio Eritrea and Radio Ethiopia, which is said to be jamming the Eritrean broadcaster with broadband white noise

The problem for radio amateurs is that the battle is taking place in the 40 meter phone band 7,145 and 7,175 MHz with the jamming signal reported by the IARU Region 1 Monitoring System (IARUMS) to be 20 kHz wide on each channel.

The on-air conflict has been going on for years; Ethiopia constructed new transmitting sites in 2008 and is said to use two or three of them for jamming purposes. The interfering signals can be heard in North America after dark.

According to IARUMS Region 1 Coordinator Wolf Hadel, DK2OM, Radio Eritrea is airing separate programs on each frequency. He said in the IARUMS September newsletter that telecommunications regulators in Germany, Austria and Switzerland have been informed, so they could file official complaints.

Read the full ARRL story at
http://www.arrl.org/news/broadcasters-jammers-wreak-havoc-on-amateur-radio-frequencies

IARU Region 1 Monitoring System latest news
http://www.iarums-r1.org/iarums/latest.pdf

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