Probably The Relay Station - signal looks about the same as the 6880 signal. Could still be AM but hearing it better in USB for the moment.
not me PRO2006, i cant really change frequencies due to the design implementation of my antenna and that i do not use "tuners".
i only have about 50Khz maximum bandwidth to move in either direction of 6880Khz before the VSWR climbs past 1.5.
perhaps though one day, at the one single specific brief moment, you might see a carrier on your waterfall on your receiver at 6880Khz.
wouldnt that be amazing ?