6925 kHz LSB Portuguese chatter - pescadore watering hole with good signals, several other frequencies in the 6700-7000 kHz band are also active but, of course, you start with 6925 kHz. Listening via the COMMSIGMA KiwiSDR remote receiver on the CT/MA border this afternoon.
6.925 MHz UNID pescadore fishing fleets using HF radios HF-SSB Brazilians?