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

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

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


Wednesday, June 15, 2011

ESAT accuses China of complicity in jamming signals

The Ethiopian Satellite Television (ESAT), which resumed transmissions to Ethiopia last week after nearly two months of interruption, has urged the government of the People's Republic of China to desist from providing technology, training and technical assistance to the regime in Ethiopia to enable it to jam shortwave radio and satellite transmissions to Ethiopia.

More at : http://www.abugidainfo.com/?p=18210