North Korea again testing in DRM mode ?

Hiroyuki Komatsubara has posted a video on youtube of DRM (Digital radio Mondiale) txn by Voice of Korea (North Korea) logged on 17th March 2016, here' the link ...

https://youtu.be/660RsdGjbic

Per Hiroyuki tentative schedule for DRM broadcast 0900-1100 UTC // to 7220 kHz in AM mode.

And here are few old stories about DRM tests by North Korea :

http://www.northkoreatech.org/2012/06/08/north-korea-apparently-testing-digital-radio/

http://kimelli.nfshost.com/index.php?id=13372