UNID Spanish Language 6723.5 kHz USB 1325 UTC 22 August 2017

[R4002]

One side of a QSO 6723.5 kHz.  6.7235 MHz 6.723.5 MHz.  I have monitored communications like this on 6.7-7.0 MHz, but they're usually higher in frequency.  However, there is a pattern here.  I have noted similar traffic in the past on 6771.5 kHz and 6772.5 kHz.  The connection here is that those transmissions had a "phone patch like" characteristic to them, just like this traffic does.  The other connection is the use of "offset" frequencies ending in .5 instead of regular "integer" frequencies that are usually found.

Spanish language chatter squeezed in between military communications on 6721 kHz USB and a strong unmodulated carrier heterodyne on 6725 kHz making listening to these guys very difficult.  At 1327 UTC, it became clear that I'm only hearing one side of the conversation.  Station is asking "30, are you sure?" then said "okay of course".  Very relaxed sounding operator, doesn't have the urgency of stations heard on 6950 kHz USB 10-15 minutes ago.  Accent is hard to pin down with the het QRM and SSB QRM from 6721 kHz USB.