Most of the stations sound better on 6918.8 kHz USB, but are also pretty well readable on 6919 kHz USB. 6919 LSB is a commonly used Portuguese language frequency...but I think this is the first time I've logged 6919 kHz USB (or 6918.8 kHz, for that matter).
Unlike 6930 USB, these stations are coming in very strong. SIO 333 to SIO 444