Over-modulated PSK31 on 20m, 28 Jul 2012

Was loitering around 14070 kHz when this really fat PSK31 signal showed up on the waterfall. The operator was KI4MRH, who had been on for at least 15 minutes prior, but I only decided to screen capture around 23:38 UTC.

On the Excalibur waterfall there are "fingers" that jut out from the centre frequency on either side. But as seen on MultiPSK most of the interference was heavily weighted on the lower sideband. I can't think of anything that would cause that asymmetry.

On a more positive note, he made contact with UT5XR.

Other novel sightings this evening (no screen shots for either):

• AD4WG had -80 dBm signal power on both PSK31 and PSK63. First time I've ever decoded PSK63, although I have seen it before and not recognized what it was.
• A rag chew over Olivia between NM4V and N1CSR. First time I've seen and decoded Olivia. One of them was in pretty deep fade, while the other came and went, but performance was something like, 80% copy.
• Another Olivia contact between VE1SKY and CO2DC.