Showing posts with label Jamming. Show all posts
Showing posts with label Jamming. Show all posts

Friday, January 15, 2021

BBC requests listeners' observations on jamming in Asia

Chris Greenway (via WOR list) reports that his colleagues in the BBC's transmission department are seeking observations of the jamming of some BBC WS English transmissions from listeners in India, Nepal, Bhutan, Hong Kong, South-East Asia and Central Asia. They would particularly like to receive reception reports about the following frequencies:

5970 kHz at 0000-0100 UTC
12095 kHz at 0100-0200 UTC
12065 kHz at 1200-1300 UTC
15310 kHz at 1200-1300 UTC
9410 kHz at 1300-1400 UTC
12065 kHz at 1300-1400 UTC (different site to 1200-1300 transmission on same freq, so reports on both hours requested)

If you can help, please send your reports to worldservice.letters@bbc.co.uk, making sure you give your location. You can keep the reports simple, just giving date, time, frequency and what you heard.

Wednesday, March 23, 2016

North Korean regime intensifies signal jamming against foreign radio broadcasts

North Korea has been from the beginning of March continually signal jamming radio broadcasts on the shortwave frequency used by the South Korean non-profit broadcaster Unification Media Group (UMG). Given the present situation, in which North Korean residents might be influenced by outside information condemning the regime and explaining the purpose of the sanctions imposed by the United Nations, the regime has showed the will to block sources of outside information that might cause unrest.

The shortwave frequency in question--7515 kHz, in the 41 meter band--has been actively jammed, making it extremely difficult for North Korean listeners to tune in.

Read the full story at :




Saturday, May 31, 2014

International broadcasters protest against intentional jamming from Ethiopia

International broadcasters protest against intentional jamming from Ethiopia Due to intentional jamming from Ethiopia the reception of TV programs by Deutsche Welle and numerous other international broadcasters is currently severely impacted in large parts of the Arab world.


BBC, France 24 and Voice of America are also among the broadcasters affected by the jamming.


The satellite provider Arabsat has identified Ethiopia as the source of the strong jamming signals on all its three satellites. Ethiopian authorities have not responded to the incident yet.

Peter Limbourg, director general of Deutsche Welle: "This is a gross violation of the internationally recognized right of freedom of speech and freedom of the press. Deutsche Welle, BBC, France 24 and Voice of America strongly condemn this action against the free flow of impartial information. We urge the Ethiopian authorities to immediately cease the jamming."


While Deutsche Welle's short wave programs have been repeatedly target of jamming from Ethiopia, the current incident appears not to be aimed at specific broadcasters or programs. The jamming of satellite programs constitutes a violation of international agreements, but the practice is nevertheless on the rise. The most recent incidents occurred in 2011 and 2012 via Iran.


In the Arab world Deutsche Welle is available through its TV channel "DW Arabia." Selected radio programs in Arabic are available via partner stations throughout the region.


(Press Release)

Monday, July 29, 2013

World Broadcasting Union backs Carrier ID to reduce jamming

The World Broadcasting Unions International Satellite Operations Group (WBU-ISOG) has adopted a resolution in favour of requiring all satellite uplinks be clearly identifiable via a newly agreed Carrier ID specification, something that would help to mitigate harmful satellite interference.

More at :  http://tinyurl.com/kuddznj

Friday, March 08, 2013

Broadcast group condemns China over radio jamming

An international broadcast association has condemned the deliberate jamming of shortwave broadcasts, including those from the ABC's Radio Australia service, into Asia.


China behind jamming of shortwave broadcasts, says AIB International broadcasters say attempts to interfere with shortwave broadcasts to Asia appear to be coming from within China.

Joanna McCarthy interviews Simon Spanswick, Chief Executive of the Association of International Broadcasting at  :

Wednesday, February 27, 2013

VOA Condemns Jamming in China


WASHINGTON, D.C. - Voice of America condemns the recent start of deliberate interference with its English language shortwave broadcasts into China.

Monitors listening to VOA broadcasts say this interference "appears intentional," and is strongest in regions around Tibet and along the Indian border.

"The Chinese government has for years jammed VOA and Radio Free Asia Chinese and Tibetan language programs and blocked VOA vernacular language websites," said VOA Director David Ensor, "but English language programs have historically not been blocked."

"We condemn this interference and are working with worldwide experts to determine the precise origin of the jamming," Ensor says. "The free flow of information is a universal right and VOA will continue to provide accurate and balanced information on platforms that can reach audiences in areas subject to censorship."

Monitors say the interference affects about 75% of the English language transmissions to China and is similar to the type of jamming aimed at VOA Horn of Africa broadcasts, which are targeted by equipment installed by China in Ethiopia. 

Reports of jamming on the VOA shortwave frequencies to China began pouring in earlier this week. On Monday the BBC issued a statement saying that its English language programs to China were also being jammed. The BBC statement said the source of the interference could not be determined, but the "extensive and coordinated efforts are indicative of a well-resourced country such as China."

VOA broadcasts to China on radio, direct-to-home satellite Radio and TV, and the Internet. News and information is also transmitted on a variety of platforms designed to overcome censorship efforts.

(VOA Press Release)

Related :

Radio Jamming — Not A Thing Of The Past
http://www.businessinsider.com/radio-jamming--not-a-thing-of-the-past-2013-2

VOA, BBC Protest China Broadcast Jamming
http://www.voanews.com/content/voa-bbc-jamming-china/1611431.html

Statement regarding interference to BBC World Service transmissions
http://www.bbc.co.uk/mediacentre/statements/shortwave-jamming.html
China shrugs off accusations of jamming BBC broadcasts

Monday, February 25, 2013

BBC World Service shortwave radio blocked in China

The BBC has said shortwave broadcasts in English of World Service radio are being jammed in China. In a statement, the corporation said it was not possible to determine exactly where the blocking was coming from. But it said the "extensive and co-ordinated efforts are indicative of a well-resourced country such as China". "The BBC strongly condemns this action which is designed to disrupt audiences' free access to news and information," said the statement.
 
More at :

Saturday, February 23, 2013

Iran targets BBC Persian service by jamming signals and harassing staff

Staff at the BBC's Persian service face satellite jamming, smear campaigns and intimidation, says Peter Horrocks, director of the BBC World Service. In an article for Index on Censorship, he reveals that Iran's interference with the BBC's signals started in 2009 at the time of  Iran's presidential election.

More at :

Sunday, January 27, 2013

Satellite world explores action on ‘jamming’

A meeting at the headquarters of Eutelsat in Paris last Friday brought together industry protagonists who have already been or fear they will be affected by jamming, to discuss countermeasures to the problem. One option suggested is to enable satellite operators to share data about when and where malicious disruptions happen. The data would be stored in a common space for reference and used in discussions with international regulatory bodies. A start was made on creating such a database at the Paris meeting.

Saturday, December 22, 2012

Joint statement by seven international broadcasters

The following joint statement has been issued by seven international broadcasters, including the BBC.

We, the representatives of Audiovisuel Extérieur de la France (AEF), Australian Broadcasting Corporation (ABC) [Australia], British Broadcasting Corporation (BBC) [United Kingdom], Broadcasting Board of Governors (BBG) [US], Deutsche Welle (DW) [Germany], Nippon Hoso Kyokai (NHK) [Japan] and Radio Netherlands Worldwide (RNW), have met in Berlin to discuss common concerns.

We find international journalism is facing unprecedented challenges from countries that seek to deny their own citizens access to information from outside their borders in violation of Article 19 of the Universal Declaration of Human Rights, which states:

"Everyone has the right to freedom of opinion and expression; this right includes freedom to hold opinions without interference and to seek, receive and impart information and ideas through any media and regardless of frontiers."

We call upon the world's nations to strengthen their commitment to Article 19 and to support expanded opportunities to share information across borders through digital and mobile technologies.

Yet we note with dismay that certain governments continue to control the flow of information. For example, China routinely blocks the Web and social media sites of our broadcasters and jams our shortwave signals, or Iran and Syria interfere with the satellite signals that carry our programs. Governments in Eurasia, Africa, the Middle East and Latin America also seek to control what their own citizens can see, hear and read.

Many of these actions, including intentional jamming of satellites, violate international regulations. We condemn them without reservation.

We also call attention to troubling new challenges to free expression. Some governments are seeking to enact far-reaching telecommunications regulations to stymie free speech.

At the World Conference on International Telecommunication (WICT) in Dubai, representatives of the world's nations have considered telecommunications rules that might explicitly apply to the Internet for the first time.

We cast a wary eye on such efforts to control the Internet, and we denounce efforts to identify and track Internet users in order to stifle free expression, inquiry and political activity.

We have agreed to increase, whenever possible, our support for efforts to circumvent Web censorship through the use of new and innovative hardware and software tools. We also agreed to increase our advocacy for Internet freedom.

(BBC Media Release)

Wednesday, December 05, 2012

UN Concerned Over DR Congo Jamming Radio Okapi Transmissions

The United Nations on Monday expressed concerns over a recent decision by the media-monitoring authority in the Democratic Republic of Congo (DRC) to jam signals of the U.N.-backed Radio Okapi amid an ongoing armed rebellion in the country's east.

The Congolese government suspended transmissions by Radio Okapi on November 30 after the broadcaster failed to submit its program schedule to the Superior Audiovisual and Communications Council (CSAC), which is mandatory under the country's legal system.

More at :

Related :

Rwanda: UN Protests Suspension of Radio Okapi

Monday, November 19, 2012

Jamming TV satellite broadcasts: Who is doing it, and how?

There has been an increase in the number of complaints about the jamming of satellite TV signals around the world. Broadcasters such as the BBC, Voice of America, France 24, Deutsche Welle and Al-Jazeera have all seen transmissions of their international programmes jammed recently.
 
Have a look at at his video produced by BBC Monitoring ...
 
http://www.bbc.co.uk/news/technology-20344823

Related :

Satellite and internet jamming rises as broadcast industry seek to uphold UN Article 19

http://www.bbc.co.uk/mediacentre/latestnews/2012/201112wsjammingconference.html

Thursday, November 15, 2012

Eritrea: Judicial Enquiry Launched in Paris Over Jamming of Eritrean Radio Station

Reporters Without Borders filed a complaint with the public prosecutor in Paris on 6 November 2012 accusing persons unknown of acts of piracy against Radio Erena, an Eritrean exile radio station based in Paris which broadcasts by satellite to the Horn of Africa and which is backed by Reporters Without Borders.

More at :

Sunday, June 10, 2012

In a troubled corner, Afghans jam the airwaves

By Rob Taylor
FORWARD OPERATING BASE BOSTICK, Afghanistan Sun Jun 10, 2012 2:20am EDT (Reuters) - It has just one phone line and broadcasts from a plywood hut safe within a U.S. base, but Nari Radio is proving an unlikely hit in one of Afghanistan's most troubled regions, with ;a talk-back caller base that counts even the Taliban.
 
Read the full story at :

Monday, February 20, 2012

New Pressure On Jammers Of International Broadcasts

Monday, February 20, 2012

The International Telecommunication Union (ITU) has called upon the world's nations to take "necessary actions" to stop intentional interference with satellite transmissions.
The change in ITU regulations, which was approved at the just-concluded World Radiocommunication Conference (WRC-12) in Geneva, Switzerland, came after numerous complaints that international satellite TV programs in Persian and Arabic were suffering from deliberate interference, known as "jamming".
Two satellite operators that have been targeted, Eutelsat and Arabsat, said the interfering signals originated from Iran and Syria.
"We are gratified to see the World Radiocommunication Conference take a position on this vital issue," said Richard M. Lobo, Director of the United States International Broadcasting Bureau.
"Of course, it remains to be seen whether Iran, Syria and other countries which interfere with international satellite communications will change their practices. Jamming is a fundamental violation, not only of international regulations and norms, but of the right of people everywhere to receive and impart information," Lobo said.
The interference, which has increased since September, 2011, affected broadcasts of the British Broadcasting Corporation, Broadcasting Board of Governors , Audiovisuel extérieur de la France RFI and France 24 TV, Deutsche Welle, and RFE/RL, Inc.'s Radio Farda. Joining in backing the ITW rule change were Radio Netherlands Worldwide and the European Broadcasting Union.
The change in the regulation came after hours of discussion and debate, both in small groups and on the floor of the WRC. A report by the ITU's Radio Regulations Board noted "the persistent character of the harmful interference" and the fact that "in some cases, the administrations involved have not responded … and appear to take no action to resolve the interference."
The revised language says administrations "shall ascertain the facts and take the necessary actions" when they encounter jamming.
Prior to the WRC action, the Directors-General of five major international broadcasters charged that jamming is a violation of Article 19 of the Universal Declaration of Human Rights.
Reporters Without Borders called for nations to "firmly condemn countries that do not respect the fundamental principles of the free flow of information," adding, "the ITU must not be the accomplice of regimes that obstruct the flow of news and information on their telecommunications networks."
The International Campaign for Human Rights in Iran termed satellite jamming part of a broader effort. "The Iranian government is also engaged in comprehensive attempts to take complete control of online access to the internet as well as restricting mobile voice and data communications," the group said in a statement urging the WRC to address the jamming issue.
(BBG Press Release)

Saturday, January 28, 2012

VOA Director Condemns Iranian Satellite Jamming

Washington, D.C., January 25, 2012 -VOA Director David Ensor has condemned Iranian satellite jamming in a new blog posted on the Voice of America Public Relations webpage, www.insidevoa.com

From the VOA Director:
Satellites are extraordinary devices, hovering quietly above the earth, beaming everyone's favorite TV shows into living rooms around the world.
Satellites are one of the things I think about when I hear the term "global village." It's technology that makes it possible to instantly share information and ideas.
We've come to depend on satellites to experience the great events of our time. Whether it's the opening ceremony of the international Olympic Games or live video of the devastating earthquake and tsunami that rocked Japan last year, satellites bring us together.
Unfortunately, some governments have decided they want to try to block this flow of information.
Since September, the Iranian government has radically increased its deliberate interference with satellites, a practice we all know as jamming. It works like this. Iran sends a bogus signal to a satellite, which overwhelms the legitimate signal and renders it useless to TV and radio audiences on the ground.
VOA's Persian broadcasts have been a particular target. In fact, the satirical VOA Persian program, Parazit, is a play on words that makes fun of this practice. Parazit, which means static in Persian, is what many Iranians sometimes see when they try to watch this popular program.
Other international broadcasters including BBC and BBC Persian TV, Radio Free Europe/Radio Liberty's Radio Farda, Radio France International, Germany's Deutsche Welle and Radio Netherlands Worldwide have all suffered from radio, TV or web interference by Iran.
This week in Geneva, delegates to the World Radiocommunication Conference (WRC) begin a series of meetings that only come along once every four years. Satellite jamming is likely to be on the agenda at this important session in one form or another. For VOA and other international broadcasters, it can't come a moment too soon. Satellites form the critical backbone of our ability to reach our audience.
It is however, much more than a broadcast industry issue. It goes to the very heart of the United Nations' Universal Declaration of Human Rights, which states: "Everyone has the right to freedom of opinion and expression; this right includes freedom to hold opinions without interference and to seek, receive and impart information and ideas through any media and regardless of frontiers."
That language couldn't be clearer, and it is part and parcel of everything we do at the Voice of America. By jamming satellites, Iran is limiting a fundamental human right of its own citizens.
Unfortunately, jamming by Iran has increased. Worse, the practice seems to be spreading, with new reports of jamming by Syria, one of Iran's few allies, and a regime increasingly at war with its own people.
VOA and other international broadcasters and organizations have been drawing attention to this issue at every opportunity. The WRC is one forum where governments, regulatory authorities and broadcasters from across the world can become more aware of this insidious problem, and act against it.
On January 24th, five of the world's largest international broadcasting organizations, including the Voice of America's parent organization, the Broadcasting Board of Governors, called on delegates meeting in Geneva to address the problem of Iranian uplink jamming.
The statement, issued by the Directors General of the British Broadcasting Corporation, Deutsche Welle, Audiovisuel Extérieur de la France, Radio Netherlands Worldwide and the U.S. Broadcasting Board of Governors, appeals to member states to "work to end this increasingly prevalent practice." Other organizations, including the Paris-based Reporters Without Borders, have urged delegates meeting in Geneva to act urgently.
Censorship and satellite jamming violate the fundamental right of access to the free flow of information enshrined in the Universal Declaration of Human Rights, and countries around the world should join together to end this practice.

David Ensor


(BBG Press Release)

Sunday, January 15, 2012

BBG Condemns Signal Interference as Rights Threat

Washington, D.C., January 13, 2012 – The Broadcasting Board of Governors (BBG) condemned the purposeful interference with broadcast transmissions to Iran as a threat to human rights and cited new evidence that jamming signals are now emanating from Syria. "Recent interference with the Eutelsat satellite originates from near Damascus, Syria," said André Mendes, Director of Technology, Services and Innovation of the International Broadcasting Bureau – the engineering arm of the BBG. "The Persian broadcasts of the Voice of America are impacted as well as the BBC."
"The notion that the locus of some jamming of our broadcasts into Iran is from Syria is something that people should know," observed BBG Chairman Walter Isaacson. In addition, interference with the Arabsat satellite has affected Alhurra TV, Radio Sawa, RFE/RL's Radio Farda and several VOA services according to Mendes.In a resolution passed at its January 13 meeting in Washington, the BBG called on delegates to the upcoming World Radiocommunication Conference in Geneva and the satellite industry to "repudiate this illegal behavior."
"The BBG strongly supports the United States Government's position that interference with free media and the free flow of information and ideas constitutes a threat to human rights and freedom and to the principles stated in Article 19 of the Universal Declaration of Human Rights," the resolution said. Last month, international broadcasters - VOA, British Broadcasting Corporation (BBC), Deutsche Welle (DW), Audiovisuel Extérieur de la France (AEF) and Radio Netherlands Worldwide (RNW) – also spoke out against the practice of signal interference. The meeting, which began at 2:00 p.m., was webcasted live. On Demand Links will be available soon.

(BBG Press Release)

Friday, November 18, 2011

Eutelsat statement on deliberate jamming of satellite signal

Paris, 17 November 2011
Eutelsat categorically refutes recent reports that claim it is generating interference to its own satellites in order to prevent reception in Iran of international Farsi satellite channels. These allegations are in total contradiction with reality. They are also totally inconsistent with the statement issued in September by the BBC which associates Eutelsat with their renewed appeal for action by regulatory authorities to combat this violation of international rights.

Over more than two years Eutelsat has publicly condemned intentional jamming of its satellites by third parties, organised to prevent reception of international Farsi channels including BBC Persian, Voice of America and Deutsche Welle. We have identified the location of the jamming from within Iran, and since May 2009, have filed multiple complaints with the relevant French and international regulatory authorities to denounce hostile jamming operations and to prompt the International Telecommunication Union (a United Nations Agency) to address this illegal practice as a priority issue.

Eutelsat maintains a constant dialogue with international Farsi channels and service providers affected by deliberate jamming. The company has repeatedly organised transmissions of these channels through other satellites in its fleet in order to provide the continuity of service that we constantly endeavour to deliver. These efforts are recognised by the BBC, including in their statement of September 7.

Deliberate jamming prevents satellite reception, creates collateral damage for other broadcasters and is contrary to international conventions for the use of satellites. Efforts to combat it are a priority issue for Eutelsat. Michel de Rosen, Eutelsat CEO, says: “In our capacity as a satellite operator we remain committed to defeating this abuse. We call on those of influence to do all they can to impress upon Iran the illegal nature of intentional jamming and the need to cease this activity immediately."

(Eutelsat Press Release)

Wednesday, November 16, 2011

ESAT Radio jammed

While tuning in to ESAT Radio on 14th Nov (Monday) at 1659 UTC on 15370 kHz found that the channel was empty, scanning the adjacant channels found a weak station on 15390, searching this frequency on web, came accross this announcement on ESAT Radio website that they are now operating on two different frequencies 15370 & 15390 kHz........

http://www.ethsat.com/2011/10/29/esat-radio-alternative-frequency-and-schedule


At 1715 UTC when I re-checked 15390 kHz only white noise was audible. This noise sounds similar to the DRM hash.
TDP schedule still listes them on 15370 daily .... http://www.airtime.be/schedule.html


On wednesday, 15th Nov 2011, jammer was noted on 15370 at 1700 UTC sign on & 1801 sign off. On 16th Nov ESAT Radio signed on at 1659 UTC & jammer again came up at 1700 UTC on 15390 kHz.
Here's how the jammer sounds ... http://tinyurl.com/bp42hne


This audio file was recorded on 16th Nov 2011, at 1659 ESAT Radio signs on, a minute later at 1700 UTC jammer came on the frequency ( at 00.23 secs in the audio file)
http://tinyurl.com/btafjvd


Realted links :
The White-noise Jamming Hash on 40m is Getting Worse
http://forums.qrz.com/archive/index.php/t-250784.html