I heard some DRM activity on 40m this morning and decided to give RXAMADRM a whiz. I got it working with my Signalink-USB attached to my KX3. In order to see signals at all in the waterfall display, I needed to crank the KX3's audio level up to 40 (max) and set the Rx audio level on the Signalink to max too.
RXAMADRM was able to decode fair bit of data over an hour or so, but never enough to print images. I really need a decent antenna for HF. And less noise.