Tuned in to the BBC World Service last night, on 15,335 kHz (Singapore relay) and on 15,755; 13,725 and 9,410 kHz (all Thailand relay) respectively. Apart from the transmission on 9,410 kHz, all wavelengths were beamed into the direction of China, if Shortwave Info is correct.
If the jamming originates from China, it is still different from the “Firedrake” recorded here. The noise jamming the BBC isn’t a tune, but a blunt row of monotonous sound waves – click the Soundcloud symbol underneath for a recording.
The BBC’s broadcasts from Singapore start with a very traditional interval tune – the bells from St Mary-le-Bow. This interval was recorded in 1926 and has been used by the BBC World Service since the early 1940s, according to Wikipedia. If the signal is still the original from 1926, the bells don’t even exist anymore, as they were destroyed during the German “Blitz”, and replaced by new ones, cast in 1956.
Apart from China, Vietnam, too, is said to jam foreign broadcasters – Radio Free Asia (RFE) is said to be the target in the case recorded here. If it is indeed RFE should be hard to tell, because you don’t hear anything but the jamming signal.
In a statement thirteen months ago, on February 25, 2013, the BBC issued a statement saying that
[t]hough it is not possible at this stage to attribute the source of the jamming definitively, 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.
Chinese foreign ministry spokeswoman Hua Chunying (华春莹) referred reporters to relevant departments at the time when asked about the BBC’s accusation on a press conference.