6771.5 kHz USB 6.771.5 MHz USB - Spanish language SS OM and YL having a conversation, sounds similar to a telephone conversation...one of the two transmitters appears to be somewhat off-frequency. I have logged this frequency (and similar/nearby frequencies) several times in the past - likely coming out of South America or Central America - still going strong at 0043 UTC. Received with Sigma SDR on the CT/MA border
6,771.5 kHz USB