The WRTH Facebook page has noted that DRM tests from Moscow will take place on 25,900 kHz starting Friday, March 22nd (tomorrow) at 10:00 UTC and ending on Saturday, March 23rd at 10:00 UTC.

Details of each broadcast can be found here–see English version via Google Translate.

They’re asking that all DRM reception reports be logged in this online forum with a detailed description and even sound clips of audio reception, if possible.