North Korea Tech, 8 June 2012
, Martyn Williams: "North Korea appears to be testing digital radio broadcasting. Hiroshi Inoue, a radio monitor in Japan, received on Wednesday the country’s international radio service, Voice of Korea, broadcasting on shortwave using DRM (Digital Radio Mondiale). DRM is a digital broadcasting technology developed for use on AM and shortwave services. He posted a couple of clips of the on YouTube. While reception isn’t perfect, the audio identification of Voice of Korea can clearly be heard. The broadcasts are taking place on 3,560 [kHz], a frequency used by the Voice of Korea in the past for conventional analog shortwave broadcasts. In a blog posting Mr. Inoue says he heard broadcasts in several languages including English, Arabic and French. Relays of domestic KCBS broadcasts were also heard. The tests appear to be taking place with assistance from Chinese engineers. ... (Thanks to DX Aktuell
for the tip!)" With audio sample.
drmna.info, 8 June 2012: "As you will hear, the high production values, overly aggressive compression and sibilant laden distortion present in VOK analogue broadcasts translate well to the digital medium of DRM." With audio samples.-- The audio samples show the tendency of DRM signals to drop out, even under not-especially-difficult reception conditions.
Wall Street Journal, Korea Realtime, 5 June 2012, Evan Ramstad: On 4 June, "the North Korean state news agency (KCNA) published yet another threat of a 'merciless sacred war' – whatever that means – and added a new level of detail: the longitude and latitude of the offices of several large newspapers in Seoul that are routinely critical of the North. ... Trouble is, the coordinates North Korea published were wrong."