8195 kHz to 8815 kHz is the 8 MHz marine mobile band so Chris' theory could be on track. The marine bands are favorite hangouts for freebanders and, well, the legal users of maritime mobile allocations, fishing fleets and the like. 8285 kHz USB is ITU HF-SSB marine channel 831 (simplex or ship transmit frequency) so that also fits (well, sort of).