The Disco Palace DRM @ 17875 kHz, 27 Oct 2012

They came back some time last week. Yesterday, there were problems, and today it was silent.

First observation: RF energy outside the band is not well controlled.

Well this waterfall looks awfully familiar.

A 64-QAM constellation is being seen in what should be the 16-QAM SDC. Probably an encoding issue is causing the decoder to lose frame sync and pick the wrong time to start SDC decode.

The issue went away until 20:20 UTC, and remained that way for the rest of the broadcast.